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android / platform / frameworks / base / 0cc96d3 / . / core / java / android / content / res / Resources.java
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/*
* Copyright (C) 2006 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.content.res;
import android.animation.Animator;
import android.animation.StateListAnimator;
import android.annotation.NonNull;
import android.util.Pools.SynchronizedPool;
import android.view.ViewDebug;
import com.android.internal.util.XmlUtils;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import android.annotation.Nullable;
import android.content.pm.ActivityInfo;
import android.graphics.Movie;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable.ConstantState;
import android.os.Build;
import android.os.Bundle;
import android.os.IBinder;
import android.os.Trace;
import android.util.ArrayMap;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.Log;
import android.util.Slog;
import android.util.TypedValue;
import android.util.LongSparseArray;
import java.io.IOException;
import java.io.InputStream;
import java.lang.ref.WeakReference;
import java.util.Locale;
import libcore.icu.NativePluralRules;
/**
* Class for accessing an application's resources. This sits on top of the
* asset manager of the application (accessible through {@link #getAssets}) and
* provides a high-level API for getting typed data from the assets.
*
* <p>The Android resource system keeps track of all non-code assets associated with an
* application. You can use this class to access your application's resources. You can generally
* acquire the {@link android.content.res.Resources} instance associated with your application
* with {@link android.content.Context#getResources getResources()}.</p>
*
* <p>The Android SDK tools compile your application's resources into the application binary
* at build time. To use a resource, you must install it correctly in the source tree (inside
* your project's {@code res/} directory) and build your application. As part of the build
* process, the SDK tools generate symbols for each resource, which you can use in your application
* code to access the resources.</p>
*
* <p>Using application resources makes it easy to update various characteristics of your
* application without modifying code, and&mdash;by providing sets of alternative
* resources&mdash;enables you to optimize your application for a variety of device configurations
* (such as for different languages and screen sizes). This is an important aspect of developing
* Android applications that are compatible on different types of devices.</p>
*
* <p>For more information about using resources, see the documentation about <a
* href="{@docRoot}guide/topics/resources/index.html">Application Resources</a>.</p>
*/
public class Resources {
static final String TAG = "Resources";
private static final boolean DEBUG_LOAD = false;
private static final boolean DEBUG_CONFIG = false;
private static final boolean TRACE_FOR_PRELOAD = false;
private static final boolean TRACE_FOR_MISS_PRELOAD = false;
private static final int LAYOUT_DIR_CONFIG = ActivityInfo.activityInfoConfigToNative(
ActivityInfo.CONFIG_LAYOUT_DIRECTION);
private static final int ID_OTHER = 0x01000004;
private static final Object sSync = new Object();
// Information about preloaded resources. Note that they are not
// protected by a lock, because while preloading in zygote we are all
// single-threaded, and after that these are immutable.
private static final LongSparseArray<ConstantState>[] sPreloadedDrawables;
private static final LongSparseArray<ConstantState> sPreloadedColorDrawables
= new LongSparseArray<ConstantState>();
private static final LongSparseArray<ColorStateList> sPreloadedColorStateLists
= new LongSparseArray<ColorStateList>();
// Pool of TypedArrays targeted to this Resources object.
final SynchronizedPool<TypedArray> mTypedArrayPool = new SynchronizedPool<TypedArray>(5);
// Used by BridgeResources in layoutlib
static Resources mSystem = null;
private static boolean sPreloaded;
private static int sPreloadedDensity;
// These are protected by mAccessLock.
private final Object mAccessLock = new Object();
private final Configuration mTmpConfig = new Configuration();
private final ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> mDrawableCache =
new ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>>();
private final ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> mColorDrawableCache =
new ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>>();
private final LongSparseArray<WeakReference<ColorStateList>> mColorStateListCache =
new LongSparseArray<WeakReference<ColorStateList>>();
private final ConfigurationBoundResourceCache<Animator> mAnimatorCache =
new ConfigurationBoundResourceCache<Animator>(this);
private final ConfigurationBoundResourceCache<StateListAnimator> mStateListAnimatorCache =
new ConfigurationBoundResourceCache<StateListAnimator>(this);
private TypedValue mTmpValue = new TypedValue();
private boolean mPreloading;
private TypedArray mCachedStyledAttributes = null;
private int mLastCachedXmlBlockIndex = -1;
private final int[] mCachedXmlBlockIds = { 0, 0, 0, 0 };
private final XmlBlock[] mCachedXmlBlocks = new XmlBlock[4];
final AssetManager mAssets;
final DisplayMetrics mMetrics = new DisplayMetrics();
private final Configuration mConfiguration = new Configuration();
private NativePluralRules mPluralRule;
private CompatibilityInfo mCompatibilityInfo = CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO;
@SuppressWarnings("unused")
private WeakReference<IBinder> mToken;
static {
sPreloadedDrawables = new LongSparseArray[2];
sPreloadedDrawables[0] = new LongSparseArray<ConstantState>();
sPreloadedDrawables[1] = new LongSparseArray<ConstantState>();
}
/**
* Returns the most appropriate default theme for the specified target SDK version.
* <ul>
* <li>Below API 11: Gingerbread
* <li>APIs 11 thru 14: Holo
* <li>APIs 14 thru XX: Device default dark
* <li>API XX and above: Device default light with dark action bar
* </ul>
*
* @param curTheme The current theme, or 0 if not specified.
* @param targetSdkVersion The target SDK version.
* @return A theme resource identifier
* @hide
*/
public static int selectDefaultTheme(int curTheme, int targetSdkVersion) {
return selectSystemTheme(curTheme, targetSdkVersion,
com.android.internal.R.style.Theme,
com.android.internal.R.style.Theme_Holo,
com.android.internal.R.style.Theme_DeviceDefault,
com.android.internal.R.style.Theme_DeviceDefault_Light_DarkActionBar);
}
/** @hide */
public static int selectSystemTheme(int curTheme, int targetSdkVersion, int orig, int holo,
int dark, int deviceDefault) {
if (curTheme != 0) {
return curTheme;
}
if (targetSdkVersion < Build.VERSION_CODES.HONEYCOMB) {
return orig;
}
if (targetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
return holo;
}
if (targetSdkVersion < Build.VERSION_CODES.CUR_DEVELOPMENT) {
return dark;
}
return deviceDefault;
}
/**
* Used by AnimatorInflater.
*
* @hide
*/
public ConfigurationBoundResourceCache<Animator> getAnimatorCache() {
return mAnimatorCache;
}
/**
* Used by AnimatorInflater.
*
* @hide
*/
public ConfigurationBoundResourceCache<StateListAnimator> getStateListAnimatorCache() {
return mStateListAnimatorCache;
}
/**
* This exception is thrown by the resource APIs when a requested resource
* can not be found.
*/
public static class NotFoundException extends RuntimeException {
public NotFoundException() {
}
public NotFoundException(String name) {
super(name);
}
}
/**
* Create a new Resources object on top of an existing set of assets in an
* AssetManager.
*
* @param assets Previously created AssetManager.
* @param metrics Current display metrics to consider when
* selecting/computing resource values.
* @param config Desired device configuration to consider when
* selecting/computing resource values (optional).
*/
public Resources(AssetManager assets, DisplayMetrics metrics, Configuration config) {
this(assets, metrics, config, CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO, null);
}
/**
* Creates a new Resources object with CompatibilityInfo.
*
* @param assets Previously created AssetManager.
* @param metrics Current display metrics to consider when
* selecting/computing resource values.
* @param config Desired device configuration to consider when
* selecting/computing resource values (optional).
* @param compatInfo this resource's compatibility info. Must not be null.
* @param token The Activity token for determining stack affiliation. Usually null.
* @hide
*/
public Resources(AssetManager assets, DisplayMetrics metrics, Configuration config,
CompatibilityInfo compatInfo, IBinder token) {
mAssets = assets;
mMetrics.setToDefaults();
if (compatInfo != null) {
mCompatibilityInfo = compatInfo;
}
mToken = new WeakReference<IBinder>(token);
updateConfiguration(config, metrics);
assets.ensureStringBlocks();
}
/**
* Return a global shared Resources object that provides access to only
* system resources (no application resources), and is not configured for
* the current screen (can not use dimension units, does not change based
* on orientation, etc).
*/
public static Resources getSystem() {
synchronized (sSync) {
Resources ret = mSystem;
if (ret == null) {
ret = new Resources();
mSystem = ret;
}
return ret;
}
}
/**
* Return the string value associated with a particular resource ID. The
* returned object will be a String if this is a plain string; it will be
* some other type of CharSequence if it is styled.
* {@more}
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @return CharSequence The string data associated with the resource, plus
* possibly styled text information.
*/
public CharSequence getText(int id) throws NotFoundException {
CharSequence res = mAssets.getResourceText(id);
if (res != null) {
return res;
}
throw new NotFoundException("String resource ID #0x"
+ Integer.toHexString(id));
}
/**
* Returns the character sequence necessary for grammatically correct pluralization
* of the given resource ID for the given quantity.
* Note that the character sequence is selected based solely on grammatical necessity,
* and that such rules differ between languages. Do not assume you know which string
* will be returned for a given quantity. See
* <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a>
* for more detail.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
* @param quantity The number used to get the correct string for the current language's
* plural rules.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @return CharSequence The string data associated with the resource, plus
* possibly styled text information.
*/
public CharSequence getQuantityText(int id, int quantity) throws NotFoundException {
NativePluralRules rule = getPluralRule();
CharSequence res = mAssets.getResourceBagText(id,
attrForQuantityCode(rule.quantityForInt(quantity)));
if (res != null) {
return res;
}
res = mAssets.getResourceBagText(id, ID_OTHER);
if (res != null) {
return res;
}
throw new NotFoundException("Plural resource ID #0x" + Integer.toHexString(id)
+ " quantity=" + quantity
+ " item=" + stringForQuantityCode(rule.quantityForInt(quantity)));
}
private NativePluralRules getPluralRule() {
synchronized (sSync) {
if (mPluralRule == null) {
mPluralRule = NativePluralRules.forLocale(mConfiguration.locale);
}
return mPluralRule;
}
}
private static int attrForQuantityCode(int quantityCode) {
switch (quantityCode) {
case NativePluralRules.ZERO: return 0x01000005;
case NativePluralRules.ONE: return 0x01000006;
case NativePluralRules.TWO: return 0x01000007;
case NativePluralRules.FEW: return 0x01000008;
case NativePluralRules.MANY: return 0x01000009;
default: return ID_OTHER;
}
}
private static String stringForQuantityCode(int quantityCode) {
switch (quantityCode) {
case NativePluralRules.ZERO: return "zero";
case NativePluralRules.ONE: return "one";
case NativePluralRules.TWO: return "two";
case NativePluralRules.FEW: return "few";
case NativePluralRules.MANY: return "many";
default: return "other";
}
}
/**
* Return the string value associated with a particular resource ID. It
* will be stripped of any styled text information.
* {@more}
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @return String The string data associated with the resource,
* stripped of styled text information.
*/
public String getString(int id) throws NotFoundException {
CharSequence res = getText(id);
if (res != null) {
return res.toString();
}
throw new NotFoundException("String resource ID #0x"
+ Integer.toHexString(id));
}
/**
* Return the string value associated with a particular resource ID,
* substituting the format arguments as defined in {@link java.util.Formatter}
* and {@link java.lang.String#format}. It will be stripped of any styled text
* information.
* {@more}
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
*
* @param formatArgs The format arguments that will be used for substitution.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @return String The string data associated with the resource,
* stripped of styled text information.
*/
public String getString(int id, Object... formatArgs) throws NotFoundException {
String raw = getString(id);
return String.format(mConfiguration.locale, raw, formatArgs);
}
/**
* Formats the string necessary for grammatically correct pluralization
* of the given resource ID for the given quantity, using the given arguments.
* Note that the string is selected based solely on grammatical necessity,
* and that such rules differ between languages. Do not assume you know which string
* will be returned for a given quantity. See
* <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a>
* for more detail.
*
* <p>Substitution of format arguments works as if using
* {@link java.util.Formatter} and {@link java.lang.String#format}.
* The resulting string will be stripped of any styled text information.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
* @param quantity The number used to get the correct string for the current language's
* plural rules.
* @param formatArgs The format arguments that will be used for substitution.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @return String The string data associated with the resource,
* stripped of styled text information.
*/
public String getQuantityString(int id, int quantity, Object... formatArgs)
throws NotFoundException {
String raw = getQuantityText(id, quantity).toString();
return String.format(mConfiguration.locale, raw, formatArgs);
}
/**
* Returns the string necessary for grammatically correct pluralization
* of the given resource ID for the given quantity.
* Note that the string is selected based solely on grammatical necessity,
* and that such rules differ between languages. Do not assume you know which string
* will be returned for a given quantity. See
* <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a>
* for more detail.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
* @param quantity The number used to get the correct string for the current language's
* plural rules.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @return String The string data associated with the resource,
* stripped of styled text information.
*/
public String getQuantityString(int id, int quantity) throws NotFoundException {
return getQuantityText(id, quantity).toString();
}
/**
* Return the string value associated with a particular resource ID. The
* returned object will be a String if this is a plain string; it will be
* some other type of CharSequence if it is styled.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
*
* @param def The default CharSequence to return.
*
* @return CharSequence The string data associated with the resource, plus
* possibly styled text information, or def if id is 0 or not found.
*/
public CharSequence getText(int id, CharSequence def) {
CharSequence res = id != 0 ? mAssets.getResourceText(id) : null;
return res != null ? res : def;
}
/**
* Return the styled text array associated with a particular resource ID.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @return The styled text array associated with the resource.
*/
public CharSequence[] getTextArray(int id) throws NotFoundException {
CharSequence[] res = mAssets.getResourceTextArray(id);
if (res != null) {
return res;
}
throw new NotFoundException("Text array resource ID #0x"
+ Integer.toHexString(id));
}
/**
* Return the string array associated with a particular resource ID.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @return The string array associated with the resource.
*/
public String[] getStringArray(int id) throws NotFoundException {
String[] res = mAssets.getResourceStringArray(id);
if (res != null) {
return res;
}
throw new NotFoundException("String array resource ID #0x"
+ Integer.toHexString(id));
}
/**
* Return the int array associated with a particular resource ID.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @return The int array associated with the resource.
*/
public int[] getIntArray(int id) throws NotFoundException {
int[] res = mAssets.getArrayIntResource(id);
if (res != null) {
return res;
}
throw new NotFoundException("Int array resource ID #0x"
+ Integer.toHexString(id));
}
/**
* Return an array of heterogeneous values.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @return Returns a TypedArray holding an array of the array values.
* Be sure to call {@link TypedArray#recycle() TypedArray.recycle()}
* when done with it.
*/
public TypedArray obtainTypedArray(int id) throws NotFoundException {
int len = mAssets.getArraySize(id);
if (len < 0) {
throw new NotFoundException("Array resource ID #0x"
+ Integer.toHexString(id));
}
TypedArray array = TypedArray.obtain(this, len);
array.mLength = mAssets.retrieveArray(id, array.mData);
array.mIndices[0] = 0;
return array;
}
/**
* Retrieve a dimensional for a particular resource ID. Unit
* conversions are based on the current {@link DisplayMetrics} associated
* with the resources.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
*
* @return Resource dimension value multiplied by the appropriate
* metric.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @see #getDimensionPixelOffset
* @see #getDimensionPixelSize
*/
public float getDimension(int id) throws NotFoundException {
synchronized (mAccessLock) {
TypedValue value = mTmpValue;
if (value == null) {
mTmpValue = value = new TypedValue();
}
getValue(id, value, true);
if (value.type == TypedValue.TYPE_DIMENSION) {
return TypedValue.complexToDimension(value.data, mMetrics);
}
throw new NotFoundException(
"Resource ID #0x" + Integer.toHexString(id) + " type #0x"
+ Integer.toHexString(value.type) + " is not valid");
}
}
/**
* Retrieve a dimensional for a particular resource ID for use
* as an offset in raw pixels. This is the same as
* {@link #getDimension}, except the returned value is converted to
* integer pixels for you. An offset conversion involves simply
* truncating the base value to an integer.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
*
* @return Resource dimension value multiplied by the appropriate
* metric and truncated to integer pixels.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @see #getDimension
* @see #getDimensionPixelSize
*/
public int getDimensionPixelOffset(int id) throws NotFoundException {
synchronized (mAccessLock) {
TypedValue value = mTmpValue;
if (value == null) {
mTmpValue = value = new TypedValue();
}
getValue(id, value, true);
if (value.type == TypedValue.TYPE_DIMENSION) {
return TypedValue.complexToDimensionPixelOffset(
value.data, mMetrics);
}
throw new NotFoundException(
"Resource ID #0x" + Integer.toHexString(id) + " type #0x"
+ Integer.toHexString(value.type) + " is not valid");
}
}
/**
* Retrieve a dimensional for a particular resource ID for use
* as a size in raw pixels. This is the same as
* {@link #getDimension}, except the returned value is converted to
* integer pixels for use as a size. A size conversion involves
* rounding the base value, and ensuring that a non-zero base value
* is at least one pixel in size.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
*
* @return Resource dimension value multiplied by the appropriate
* metric and truncated to integer pixels.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @see #getDimension
* @see #getDimensionPixelOffset
*/
public int getDimensionPixelSize(int id) throws NotFoundException {
synchronized (mAccessLock) {
TypedValue value = mTmpValue;
if (value == null) {
mTmpValue = value = new TypedValue();
}
getValue(id, value, true);
if (value.type == TypedValue.TYPE_DIMENSION) {
return TypedValue.complexToDimensionPixelSize(
value.data, mMetrics);
}
throw new NotFoundException(
"Resource ID #0x" + Integer.toHexString(id) + " type #0x"
+ Integer.toHexString(value.type) + " is not valid");
}
}
/**
* Retrieve a fractional unit for a particular resource ID.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
* @param base The base value of this fraction. In other words, a
* standard fraction is multiplied by this value.
* @param pbase The parent base value of this fraction. In other
* words, a parent fraction (nn%p) is multiplied by this
* value.
*
* @return Attribute fractional value multiplied by the appropriate
* base value.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*/
public float getFraction(int id, int base, int pbase) {
synchronized (mAccessLock) {
TypedValue value = mTmpValue;
if (value == null) {
mTmpValue = value = new TypedValue();
}
getValue(id, value, true);
if (value.type == TypedValue.TYPE_FRACTION) {
return TypedValue.complexToFraction(value.data, base, pbase);
}
throw new NotFoundException(
"Resource ID #0x" + Integer.toHexString(id) + " type #0x"
+ Integer.toHexString(value.type) + " is not valid");
}
}
/**
* Return a drawable object associated with a particular resource ID.
* Various types of objects will be returned depending on the underlying
* resource -- for example, a solid color, PNG image, scalable image, etc.
* The Drawable API hides these implementation details.
*
* <p class="note"><strong>Note:</strong> Prior to
* {@link android.os.Build.VERSION_CODES#JELLY_BEAN}, this function
* would not correctly retrieve the final configuration density when
* the resource ID passed here is an alias to another Drawable resource.
* This means that if the density configuration of the alias resource
* is different than the actual resource, the density of the returned
* Drawable would be incorrect, resulting in bad scaling. To work
* around this, you can instead retrieve the Drawable through
* {@link TypedArray#getDrawable TypedArray.getDrawable}. Use
* {@link android.content.Context#obtainStyledAttributes(int[])
* Context.obtainStyledAttributes} with
* an array containing the resource ID of interest to create the TypedArray.</p>
*
* <p class="note"><strong>Note:</strong> To obtain a themed drawable, use
* {@link android.content.Context#getDrawable(int) Context.getDrawable(int)}
* or {@link #getDrawable(int, Theme)} passing the desired theme.</p>
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
* @return Drawable An object that can be used to draw this resource.
* @throws NotFoundException Throws NotFoundException if the given ID does
* not exist.
* @see #getDrawable(int, Theme)
*/
public Drawable getDrawable(int id) throws NotFoundException {
final Drawable d = getDrawable(id, null);
if (d.canApplyTheme()) {
Log.w(TAG, "Drawable " + getResourceName(id) + " has unresolved theme "
+ "attributes! Consider using Resources.getDrawable(int, Theme) or "
+ "Context.getDrawable(int).", new RuntimeException());
}
return d;
}
/**
* Return a drawable object associated with a particular resource ID and
* styled for the specified theme. Various types of objects will be
* returned depending on the underlying resource -- for example, a solid
* color, PNG image, scalable image, etc.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
* @param theme The theme used to style the drawable attributes, may be {@code null}.
* @return Drawable An object that can be used to draw this resource.
* @throws NotFoundException Throws NotFoundException if the given ID does
* not exist.
*/
public Drawable getDrawable(int id, @Nullable Theme theme) throws NotFoundException {
TypedValue value;
synchronized (mAccessLock) {
value = mTmpValue;
if (value == null) {
value = new TypedValue();
} else {
mTmpValue = null;
}
getValue(id, value, true);
}
final Drawable res = loadDrawable(value, id, theme);
synchronized (mAccessLock) {
if (mTmpValue == null) {
mTmpValue = value;
}
}
return res;
}
/**
* Return a drawable object associated with a particular resource ID for the
* given screen density in DPI. This will set the drawable's density to be
* the device's density multiplied by the ratio of actual drawable density
* to requested density. This allows the drawable to be scaled up to the
* correct size if needed. Various types of objects will be returned
* depending on the underlying resource -- for example, a solid color, PNG
* image, scalable image, etc. The Drawable API hides these implementation
* details.
*
* <p class="note"><strong>Note:</strong> To obtain a themed drawable, use
* {@link android.content.Context#getDrawable(int) Context.getDrawable(int)}
* or {@link #getDrawableForDensity(int, int, Theme)} passing the desired
* theme.</p>
*
* @param id The desired resource identifier, as generated by the aapt tool.
* This integer encodes the package, type, and resource entry.
* The value 0 is an invalid identifier.
* @param density the desired screen density indicated by the resource as
* found in {@link DisplayMetrics}.
* @return Drawable An object that can be used to draw this resource.
* @throws NotFoundException Throws NotFoundException if the given ID does
* not exist.
* @see #getDrawableForDensity(int, int, Theme)
*/
public Drawable getDrawableForDensity(int id, int density) throws NotFoundException {
return getDrawableForDensity(id, density, null);
}
/**
* Return a drawable object associated with a particular resource ID for the
* given screen density in DPI and styled for the specified theme.
*
* @param id The desired resource identifier, as generated by the aapt tool.
* This integer encodes the package, type, and resource entry.
* The value 0 is an invalid identifier.
* @param density The desired screen density indicated by the resource as
* found in {@link DisplayMetrics}.
* @param theme The theme used to style the drawable attributes, may be {@code null}.
* @return Drawable An object that can be used to draw this resource.
* @throws NotFoundException Throws NotFoundException if the given ID does
* not exist.
*/
public Drawable getDrawableForDensity(int id, int density, @Nullable Theme theme) {
TypedValue value;
synchronized (mAccessLock) {
value = mTmpValue;
if (value == null) {
value = new TypedValue();
} else {
mTmpValue = null;
}
getValueForDensity(id, density, value, true);
/*
* Pretend the requested density is actually the display density. If
* the drawable returned is not the requested density, then force it
* to be scaled later by dividing its density by the ratio of
* requested density to actual device density. Drawables that have
* undefined density or no density don't need to be handled here.
*/
if (value.density > 0 && value.density != TypedValue.DENSITY_NONE) {
if (value.density == density) {
value.density = mMetrics.densityDpi;
} else {
value.density = (value.density * mMetrics.densityDpi) / density;
}
}
}
final Drawable res = loadDrawable(value, id, theme);
synchronized (mAccessLock) {
if (mTmpValue == null) {
mTmpValue = value;
}
}
return res;
}
/**
* Return a movie object associated with the particular resource ID.
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
*/
public Movie getMovie(int id) throws NotFoundException {
InputStream is = openRawResource(id);
Movie movie = Movie.decodeStream(is);
try {
is.close();
}
catch (java.io.IOException e) {
// don't care, since the return value is valid
}
return movie;
}
/**
* Return a color integer associated with a particular resource ID.
* If the resource holds a complex
* {@link android.content.res.ColorStateList}, then the default color from
* the set is returned.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @return Returns a single color value in the form 0xAARRGGBB.
*/
public int getColor(int id) throws NotFoundException {
TypedValue value;
synchronized (mAccessLock) {
value = mTmpValue;
if (value == null) {
value = new TypedValue();
}
getValue(id, value, true);
if (value.type >= TypedValue.TYPE_FIRST_INT
&& value.type <= TypedValue.TYPE_LAST_INT) {
mTmpValue = value;
return value.data;
} else if (value.type != TypedValue.TYPE_STRING) {
throw new NotFoundException(
"Resource ID #0x" + Integer.toHexString(id) + " type #0x"
+ Integer.toHexString(value.type) + " is not valid");
}
mTmpValue = null;
}
ColorStateList csl = loadColorStateList(value, id);
synchronized (mAccessLock) {
if (mTmpValue == null) {
mTmpValue = value;
}
}
return csl.getDefaultColor();
}
/**
* Return a color state list associated with a particular resource ID. The
* resource may contain either a single raw color value, or a complex
* {@link android.content.res.ColorStateList} holding multiple possible colors.
*
* @param id The desired resource identifier of a {@link ColorStateList},
* as generated by the aapt tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @return Returns a ColorStateList object containing either a single
* solid color or multiple colors that can be selected based on a state.
*/
public ColorStateList getColorStateList(int id) throws NotFoundException {
TypedValue value;
synchronized (mAccessLock) {
value = mTmpValue;
if (value == null) {
value = new TypedValue();
} else {
mTmpValue = null;
}
getValue(id, value, true);
}
ColorStateList res = loadColorStateList(value, id);
synchronized (mAccessLock) {
if (mTmpValue == null) {
mTmpValue = value;
}
}
return res;
}
/**
* Return a boolean associated with a particular resource ID. This can be
* used with any integral resource value, and will return true if it is
* non-zero.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @return Returns the boolean value contained in the resource.
*/
public boolean getBoolean(int id) throws NotFoundException {
synchronized (mAccessLock) {
TypedValue value = mTmpValue;
if (value == null) {
mTmpValue = value = new TypedValue();
}
getValue(id, value, true);
if (value.type >= TypedValue.TYPE_FIRST_INT
&& value.type <= TypedValue.TYPE_LAST_INT) {
return value.data != 0;
}
throw new NotFoundException(
"Resource ID #0x" + Integer.toHexString(id) + " type #0x"
+ Integer.toHexString(value.type) + " is not valid");
}
}
/**
* Return an integer associated with a particular resource ID.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @return Returns the integer value contained in the resource.
*/
public int getInteger(int id) throws NotFoundException {
synchronized (mAccessLock) {
TypedValue value = mTmpValue;
if (value == null) {
mTmpValue = value = new TypedValue();
}
getValue(id, value, true);
if (value.type >= TypedValue.TYPE_FIRST_INT
&& value.type <= TypedValue.TYPE_LAST_INT) {
return value.data;
}
throw new NotFoundException(
"Resource ID #0x" + Integer.toHexString(id) + " type #0x"
+ Integer.toHexString(value.type) + " is not valid");
}
}
/**
* Retrieve a floating-point value for a particular resource ID.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
*
* @return Returns the floating-point value contained in the resource.
*
* @throws NotFoundException Throws NotFoundException if the given ID does
* not exist or is not a floating-point value.
* @hide Pending API council approval.
*/
public float getFloat(int id) {
synchronized (mAccessLock) {
TypedValue value = mTmpValue;
if (value == null) {
mTmpValue = value = new TypedValue();
}
getValue(id, value, true);
if (value.type == TypedValue.TYPE_FLOAT) {
return value.getFloat();
}
throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) + " type #0x"
+ Integer.toHexString(value.type) + " is not valid");
}
}
/**
* Return an XmlResourceParser through which you can read a view layout
* description for the given resource ID. This parser has limited
* functionality -- in particular, you can't change its input, and only
* the high-level events are available.
*
* <p>This function is really a simple wrapper for calling
* {@link #getXml} with a layout resource.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @return A new parser object through which you can read
* the XML data.
*
* @see #getXml
*/
public XmlResourceParser getLayout(int id) throws NotFoundException {
return loadXmlResourceParser(id, "layout");
}
/**
* Return an XmlResourceParser through which you can read an animation
* description for the given resource ID. This parser has limited
* functionality -- in particular, you can't change its input, and only
* the high-level events are available.
*
* <p>This function is really a simple wrapper for calling
* {@link #getXml} with an animation resource.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @return A new parser object through which you can read
* the XML data.
*
* @see #getXml
*/
public XmlResourceParser getAnimation(int id) throws NotFoundException {
return loadXmlResourceParser(id, "anim");
}
/**
* Return an XmlResourceParser through which you can read a generic XML
* resource for the given resource ID.
*
* <p>The XmlPullParser implementation returned here has some limited
* functionality. In particular, you can't change its input, and only
* high-level parsing events are available (since the document was
* pre-parsed for you at build time, which involved merging text and
* stripping comments).
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @return A new parser object through which you can read
* the XML data.
*
* @see android.util.AttributeSet
*/
public XmlResourceParser getXml(int id) throws NotFoundException {
return loadXmlResourceParser(id, "xml");
}
/**
* Open a data stream for reading a raw resource. This can only be used
* with resources whose value is the name of an asset files -- that is, it can be
* used to open drawable, sound, and raw resources; it will fail on string
* and color resources.
*
* @param id The resource identifier to open, as generated by the appt
* tool.
*
* @return InputStream Access to the resource data.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
*/
public InputStream openRawResource(int id) throws NotFoundException {
TypedValue value;
synchronized (mAccessLock) {
value = mTmpValue;
if (value == null) {
value = new TypedValue();
} else {
mTmpValue = null;
}
}
InputStream res = openRawResource(id, value);
synchronized (mAccessLock) {
if (mTmpValue == null) {
mTmpValue = value;
}
}
return res;
}
/**
* Open a data stream for reading a raw resource. This can only be used
* with resources whose value is the name of an asset file -- that is, it can be
* used to open drawable, sound, and raw resources; it will fail on string
* and color resources.
*
* @param id The resource identifier to open, as generated by the appt tool.
* @param value The TypedValue object to hold the resource information.
*
* @return InputStream Access to the resource data.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*/
public InputStream openRawResource(int id, TypedValue value) throws NotFoundException {
getValue(id, value, true);
try {
return mAssets.openNonAsset(value.assetCookie, value.string.toString(),
AssetManager.ACCESS_STREAMING);
} catch (Exception e) {
NotFoundException rnf = new NotFoundException("File " + value.string.toString() +
" from drawable resource ID #0x" + Integer.toHexString(id));
rnf.initCause(e);
throw rnf;
}
}
/**
* Open a file descriptor for reading a raw resource. This can only be used
* with resources whose value is the name of an asset files -- that is, it can be
* used to open drawable, sound, and raw resources; it will fail on string
* and color resources.
*
* <p>This function only works for resources that are stored in the package
* as uncompressed data, which typically includes things like mp3 files
* and png images.
*
* @param id The resource identifier to open, as generated by the appt
* tool.
*
* @return AssetFileDescriptor A new file descriptor you can use to read
* the resource. This includes the file descriptor itself, as well as the
* offset and length of data where the resource appears in the file. A
* null is returned if the file exists but is compressed.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
*/
public AssetFileDescriptor openRawResourceFd(int id) throws NotFoundException {
TypedValue value;
synchronized (mAccessLock) {
value = mTmpValue;
if (value == null) {
value = new TypedValue();
} else {
mTmpValue = null;
}
getValue(id, value, true);
}
try {
return mAssets.openNonAssetFd(
value.assetCookie, value.string.toString());
} catch (Exception e) {
NotFoundException rnf = new NotFoundException(
"File " + value.string.toString()
+ " from drawable resource ID #0x"
+ Integer.toHexString(id));
rnf.initCause(e);
throw rnf;
} finally {
synchronized (mAccessLock) {
if (mTmpValue == null) {
mTmpValue = value;
}
}
}
}
/**
* Return the raw data associated with a particular resource ID.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
* @param outValue Object in which to place the resource data.
* @param resolveRefs If true, a resource that is a reference to another
* resource will be followed so that you receive the
* actual final resource data. If false, the TypedValue
* will be filled in with the reference itself.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
*/
public void getValue(int id, TypedValue outValue, boolean resolveRefs)
throws NotFoundException {
boolean found = mAssets.getResourceValue(id, 0, outValue, resolveRefs);
if (found) {
return;
}
throw new NotFoundException("Resource ID #0x"
+ Integer.toHexString(id));
}
/**
* Get the raw value associated with a resource with associated density.
*
* @param id resource identifier
* @param density density in DPI
* @param resolveRefs If true, a resource that is a reference to another
* resource will be followed so that you receive the actual final
* resource data. If false, the TypedValue will be filled in with
* the reference itself.
* @throws NotFoundException Throws NotFoundException if the given ID does
* not exist.
* @see #getValue(String, TypedValue, boolean)
*/
public void getValueForDensity(int id, int density, TypedValue outValue, boolean resolveRefs)
throws NotFoundException {
boolean found = mAssets.getResourceValue(id, density, outValue, resolveRefs);
if (found) {
return;
}
throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id));
}
/**
* Return the raw data associated with a particular resource ID.
* See getIdentifier() for information on how names are mapped to resource
* IDs, and getString(int) for information on how string resources are
* retrieved.
*
* <p>Note: use of this function is discouraged. It is much more
* efficient to retrieve resources by identifier than by name.
*
* @param name The name of the desired resource. This is passed to
* getIdentifier() with a default type of "string".
* @param outValue Object in which to place the resource data.
* @param resolveRefs If true, a resource that is a reference to another
* resource will be followed so that you receive the
* actual final resource data. If false, the TypedValue
* will be filled in with the reference itself.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
*/
public void getValue(String name, TypedValue outValue, boolean resolveRefs)
throws NotFoundException {
int id = getIdentifier(name, "string", null);
if (id != 0) {
getValue(id, outValue, resolveRefs);
return;
}
throw new NotFoundException("String resource name " + name);
}
/**
* This class holds the current attribute values for a particular theme.
* In other words, a Theme is a set of values for resource attributes;
* these are used in conjunction with {@link TypedArray}
* to resolve the final value for an attribute.
*
* <p>The Theme's attributes come into play in two ways: (1) a styled
* attribute can explicit reference a value in the theme through the
* "?themeAttribute" syntax; (2) if no value has been defined for a
* particular styled attribute, as a last resort we will try to find that
* attribute's value in the Theme.
*
* <p>You will normally use the {@link #obtainStyledAttributes} APIs to
* retrieve XML attributes with style and theme information applied.
*/
public final class Theme {
/**
* Place new attribute values into the theme. The style resource
* specified by <var>resid</var> will be retrieved from this Theme's
* resources, its values placed into the Theme object.
*
* <p>The semantics of this function depends on the <var>force</var>
* argument: If false, only values that are not already defined in
* the theme will be copied from the system resource; otherwise, if
* any of the style's attributes are already defined in the theme, the
* current values in the theme will be overwritten.
*
* @param resId The resource ID of a style resource from which to
* obtain attribute values.
* @param force If true, values in the style resource will always be
* used in the theme; otherwise, they will only be used
* if not already defined in the theme.
*/
public void applyStyle(int resId, boolean force) {
AssetManager.applyThemeStyle(mTheme, resId, force);
mThemeResId = resId;
mKey += Integer.toHexString(resId) + (force ? "! " : " ");
}
/**
* Set this theme to hold the same contents as the theme
* <var>other</var>. If both of these themes are from the same
* Resources object, they will be identical after this function
* returns. If they are from different Resources, only the resources
* they have in common will be set in this theme.
*
* @param other The existing Theme to copy from.
*/
public void setTo(Theme other) {
AssetManager.copyTheme(mTheme, other.mTheme);
mThemeResId = other.mThemeResId;
mKey = other.mKey;
}
/**
* Return a TypedArray holding the values defined by
* <var>Theme</var> which are listed in <var>attrs</var>.
*
* <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done
* with the array.
*
* @param attrs The desired attributes.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @return Returns a TypedArray holding an array of the attribute values.
* Be sure to call {@link TypedArray#recycle() TypedArray.recycle()}
* when done with it.
*
* @see Resources#obtainAttributes
* @see #obtainStyledAttributes(int, int[])
* @see #obtainStyledAttributes(AttributeSet, int[], int, int)
*/
public TypedArray obtainStyledAttributes(int[] attrs) {
final int len = attrs.length;
final TypedArray array = TypedArray.obtain(Resources.this, len);
array.mTheme = this;
AssetManager.applyStyle(mTheme, 0, 0, 0, attrs, array.mData, array.mIndices);
return array;
}
/**
* Return a TypedArray holding the values defined by the style
* resource <var>resid</var> which are listed in <var>attrs</var>.
*
* <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done
* with the array.
*
* @param resid The desired style resource.
* @param attrs The desired attributes in the style.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @return Returns a TypedArray holding an array of the attribute values.
* Be sure to call {@link TypedArray#recycle() TypedArray.recycle()}
* when done with it.
*
* @see Resources#obtainAttributes
* @see #obtainStyledAttributes(int[])
* @see #obtainStyledAttributes(AttributeSet, int[], int, int)
*/
public TypedArray obtainStyledAttributes(int resid, int[] attrs) throws NotFoundException {
final int len = attrs.length;
final TypedArray array = TypedArray.obtain(Resources.this, len);
array.mTheme = this;
if (false) {
int[] data = array.mData;
System.out.println("**********************************************************");
System.out.println("**********************************************************");
System.out.println("**********************************************************");
System.out.println("Attributes:");
String s = " Attrs:";
int i;
for (i=0; i<attrs.length; i++) {
s = s + " 0x" + Integer.toHexString(attrs[i]);
}
System.out.println(s);
s = " Found:";
TypedValue value = new TypedValue();
for (i=0; i<attrs.length; i++) {
int d = i*AssetManager.STYLE_NUM_ENTRIES;
value.type = data[d+AssetManager.STYLE_TYPE];
value.data = data[d+AssetManager.STYLE_DATA];
value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE];
value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID];
s = s + " 0x" + Integer.toHexString(attrs[i])
+ "=" + value;
}
System.out.println(s);
}
AssetManager.applyStyle(mTheme, 0, resid, 0, attrs, array.mData, array.mIndices);
return array;
}
/**
* Return a TypedArray holding the attribute values in
* <var>set</var>
* that are listed in <var>attrs</var>. In addition, if the given
* AttributeSet specifies a style class (through the "style" attribute),
* that style will be applied on top of the base attributes it defines.
*
* <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done
* with the array.
*
* <p>When determining the final value of a particular attribute, there
* are four inputs that come into play:</p>
*
* <ol>
* <li> Any attribute values in the given AttributeSet.
* <li> The style resource specified in the AttributeSet (named
* "style").
* <li> The default style specified by <var>defStyleAttr</var> and
* <var>defStyleRes</var>
* <li> The base values in this theme.
* </ol>
*
* <p>Each of these inputs is considered in-order, with the first listed
* taking precedence over the following ones. In other words, if in the
* AttributeSet you have supplied <code>&lt;Button
* textColor="#ff000000"&gt;</code>, then the button's text will
* <em>always</em> be black, regardless of what is specified in any of
* the styles.
*
* @param set The base set of attribute values. May be null.
* @param attrs The desired attributes to be retrieved.
* @param defStyleAttr An attribute in the current theme that contains a
* reference to a style resource that supplies
* defaults values for the TypedArray. Can be
* 0 to not look for defaults.
* @param defStyleRes A resource identifier of a style resource that
* supplies default values for the TypedArray,
* used only if defStyleAttr is 0 or can not be found
* in the theme. Can be 0 to not look for defaults.
*
* @return Returns a TypedArray holding an array of the attribute values.
* Be sure to call {@link TypedArray#recycle() TypedArray.recycle()}
* when done with it.
*
* @see Resources#obtainAttributes
* @see #obtainStyledAttributes(int[])
* @see #obtainStyledAttributes(int, int[])
*/
public TypedArray obtainStyledAttributes(AttributeSet set,
int[] attrs, int defStyleAttr, int defStyleRes) {
final int len = attrs.length;
final TypedArray array = TypedArray.obtain(Resources.this, len);
// XXX note that for now we only work with compiled XML files.
// To support generic XML files we will need to manually parse
// out the attributes from the XML file (applying type information
// contained in the resources and such).
final XmlBlock.Parser parser = (XmlBlock.Parser)set;
AssetManager.applyStyle(mTheme, defStyleAttr, defStyleRes,
parser != null ? parser.mParseState : 0, attrs, array.mData, array.mIndices);
array.mTheme = this;
array.mXml = parser;
if (false) {
int[] data = array.mData;
System.out.println("Attributes:");
String s = " Attrs:";
int i;
for (i=0; i<set.getAttributeCount(); i++) {
s = s + " " + set.getAttributeName(i);
int id = set.getAttributeNameResource(i);
if (id != 0) {
s = s + "(0x" + Integer.toHexString(id) + ")";
}
s = s + "=" + set.getAttributeValue(i);
}
System.out.println(s);
s = " Found:";
TypedValue value = new TypedValue();
for (i=0; i<attrs.length; i++) {
int d = i*AssetManager.STYLE_NUM_ENTRIES;
value.type = data[d+AssetManager.STYLE_TYPE];
value.data = data[d+AssetManager.STYLE_DATA];
value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE];
value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID];
s = s + " 0x" + Integer.toHexString(attrs[i])
+ "=" + value;
}
System.out.println(s);
}
return array;
}
/**
* Retrieve the values for a set of attributes in the Theme. The
* contents of the typed array are ultimately filled in by
* {@link Resources#getValue}.
*
* @param values The base set of attribute values, must be equal in
* length to {@code attrs}. All values must be of type
* {@link TypedValue#TYPE_ATTRIBUTE}.
* @param attrs The desired attributes to be retrieved.
* @return Returns a TypedArray holding an array of the attribute
* values. Be sure to call {@link TypedArray#recycle()}
* when done with it.
* @hide
*/
@NonNull
public TypedArray resolveAttributes(@NonNull int[] values, @NonNull int[] attrs) {
final int len = attrs.length;
if (values == null || len != values.length) {
throw new IllegalArgumentException(
"Base attribute values must the same length as attrs");
}
final TypedArray array = TypedArray.obtain(Resources.this, len);
AssetManager.resolveAttrs(mTheme, 0, 0, values, attrs, array.mData, array.mIndices);
array.mTheme = this;
array.mXml = null;
return array;
}
/**
* Retrieve the value of an attribute in the Theme. The contents of
* <var>outValue</var> are ultimately filled in by
* {@link Resources#getValue}.
*
* @param resid The resource identifier of the desired theme
* attribute.
* @param outValue Filled in with the ultimate resource value supplied
* by the attribute.
* @param resolveRefs If true, resource references will be walked; if
* false, <var>outValue</var> may be a
* TYPE_REFERENCE. In either case, it will never
* be a TYPE_ATTRIBUTE.
*
* @return boolean Returns true if the attribute was found and
* <var>outValue</var> is valid, else false.
*/
public boolean resolveAttribute(int resid, TypedValue outValue, boolean resolveRefs) {
boolean got = mAssets.getThemeValue(mTheme, resid, outValue, resolveRefs);
if (false) {
System.out.println(
"resolveAttribute #" + Integer.toHexString(resid)
+ " got=" + got + ", type=0x" + Integer.toHexString(outValue.type)
+ ", data=0x" + Integer.toHexString(outValue.data));
}
return got;
}
/**
* Gets all of the attribute ids associated with this {@link Theme}. For debugging only.
*
* @return The int array containing attribute ids associated with this {@link Theme}.
* @hide
*/
public int[] getAllAttributes() {
return mAssets.getStyleAttributes(getAppliedStyleResId());
}
/**
* Returns the resources to which this theme belongs.
*
* @return Resources to which this theme belongs.
*/
public Resources getResources() {
return Resources.this;
}
/**
* Return a drawable object associated with a particular resource ID
* and styled for the Theme.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
* @return Drawable An object that can be used to draw this resource.
* @throws NotFoundException Throws NotFoundException if the given ID
* does not exist.
*/
public Drawable getDrawable(int id) throws NotFoundException {
return Resources.this.getDrawable(id, this);
}
/**
* Print contents of this theme out to the log. For debugging only.
*
* @param priority The log priority to use.
* @param tag The log tag to use.
* @param prefix Text to prefix each line printed.
*/
public void dump(int priority, String tag, String prefix) {
AssetManager.dumpTheme(mTheme, priority, tag, prefix);
}
@Override
protected void finalize() throws Throwable {
super.finalize();
mAssets.releaseTheme(mTheme);
}
/*package*/ Theme() {
mAssets = Resources.this.mAssets;
mTheme = mAssets.createTheme();
}
@SuppressWarnings("hiding")
private final AssetManager mAssets;
private final long mTheme;
/** Resource identifier for the theme. */
private int mThemeResId = 0;
/** Unique key for the series of styles applied to this theme. */
private String mKey = "";
// Needed by layoutlib.
/*package*/ long getNativeTheme() {
return mTheme;
}
/*package*/ int getAppliedStyleResId() {
return mThemeResId;
}
/*package*/ String getKey() {
return mKey;
}
private String getResourceNameFromHexString(String hexString) {
return getResourceName(Integer.parseInt(hexString, 16));
}
/**
* Parses {@link #mKey} and returns a String array that holds pairs of adjacent Theme data:
* resource name followed by whether or not it was forced, as specified by
* {@link #applyStyle(int, boolean)}.
*
* @hide
*/
@ViewDebug.ExportedProperty(category = "theme", hasAdjacentMapping = true)
public String[] getTheme() {
String[] themeData = mKey.split(" ");
String[] themes = new String[themeData.length * 2];
String theme;
boolean forced;
for (int i = 0, j = themeData.length - 1; i < themes.length; i += 2, --j) {
theme = themeData[j];
forced = theme.endsWith("!");
themes[i] = forced ?
getResourceNameFromHexString(theme.substring(0, theme.length() - 1)) :
getResourceNameFromHexString(theme);
themes[i + 1] = forced ? "forced" : "not forced";
}
return themes;
}
}
/**
* Generate a new Theme object for this set of Resources. It initially
* starts out empty.
*
* @return Theme The newly created Theme container.
*/
public final Theme newTheme() {
return new Theme();
}
/**
* Retrieve a set of basic attribute values from an AttributeSet, not
* performing styling of them using a theme and/or style resources.
*
* @param set The current attribute values to retrieve.
* @param attrs The specific attributes to be retrieved.
* @return Returns a TypedArray holding an array of the attribute values.
* Be sure to call {@link TypedArray#recycle() TypedArray.recycle()}
* when done with it.
*
* @see Theme#obtainStyledAttributes(AttributeSet, int[], int, int)
*/
public TypedArray obtainAttributes(AttributeSet set, int[] attrs) {
int len = attrs.length;
TypedArray array = TypedArray.obtain(this, len);
// XXX note that for now we only work with compiled XML files.
// To support generic XML files we will need to manually parse
// out the attributes from the XML file (applying type information
// contained in the resources and such).
XmlBlock.Parser parser = (XmlBlock.Parser)set;
mAssets.retrieveAttributes(parser.mParseState, attrs,
array.mData, array.mIndices);
array.mXml = parser;
return array;
}
/**
* Store the newly updated configuration.
*/
public void updateConfiguration(Configuration config,
DisplayMetrics metrics) {
updateConfiguration(config, metrics, null);
}
/**
* @hide
*/
public void updateConfiguration(Configuration config,
DisplayMetrics metrics, CompatibilityInfo compat) {
synchronized (mAccessLock) {
if (false) {
Slog.i(TAG, "**** Updating config of " + this + ": old config is "
+ mConfiguration + " old compat is " + mCompatibilityInfo);
Slog.i(TAG, "**** Updating config of " + this + ": new config is "
+ config + " new compat is " + compat);
}
if (compat != null) {
mCompatibilityInfo = compat;
}
if (metrics != null) {
mMetrics.setTo(metrics);
}
// NOTE: We should re-arrange this code to create a Display
// with the CompatibilityInfo that is used everywhere we deal
// with the display in relation to this app, rather than
// doing the conversion here. This impl should be okay because
// we make sure to return a compatible display in the places
// where there are public APIs to retrieve the display... but
// it would be cleaner and more maintainble to just be
// consistently dealing with a compatible display everywhere in
// the framework.
mCompatibilityInfo.applyToDisplayMetrics(mMetrics);
int configChanges = calcConfigChanges(config);
if (mConfiguration.locale == null) {
mConfiguration.locale = Locale.getDefault();
mConfiguration.setLayoutDirection(mConfiguration.locale);
}
if (mConfiguration.densityDpi != Configuration.DENSITY_DPI_UNDEFINED) {
mMetrics.densityDpi = mConfiguration.densityDpi;
mMetrics.density = mConfiguration.densityDpi * DisplayMetrics.DENSITY_DEFAULT_SCALE;
}
mMetrics.scaledDensity = mMetrics.density * mConfiguration.fontScale;
String locale = null;
if (mConfiguration.locale != null) {
locale = adjustLanguageTag(mConfiguration.locale.toLanguageTag());
}
int width, height;
if (mMetrics.widthPixels >= mMetrics.heightPixels) {
width = mMetrics.widthPixels;
height = mMetrics.heightPixels;
} else {
//noinspection SuspiciousNameCombination
width = mMetrics.heightPixels;
//noinspection SuspiciousNameCombination
height = mMetrics.widthPixels;
}
int keyboardHidden = mConfiguration.keyboardHidden;
if (keyboardHidden == Configuration.KEYBOARDHIDDEN_NO
&& mConfiguration.hardKeyboardHidden
== Configuration.HARDKEYBOARDHIDDEN_YES) {
keyboardHidden = Configuration.KEYBOARDHIDDEN_SOFT;
}
mAssets.setConfiguration(mConfiguration.mcc, mConfiguration.mnc,
locale, mConfiguration.orientation,
mConfiguration.touchscreen,
mConfiguration.densityDpi, mConfiguration.keyboard,
keyboardHidden, mConfiguration.navigation, width, height,
mConfiguration.smallestScreenWidthDp,
mConfiguration.screenWidthDp, mConfiguration.screenHeightDp,
mConfiguration.screenLayout, mConfiguration.uiMode,
Build.VERSION.RESOURCES_SDK_INT);
if (DEBUG_CONFIG) {
Slog.i(TAG, "**** Updating config of " + this + ": final config is " + mConfiguration
+ " final compat is " + mCompatibilityInfo);
}
clearDrawableCachesLocked(mDrawableCache, configChanges);
clearDrawableCachesLocked(mColorDrawableCache, configChanges);
mAnimatorCache.onConfigurationChange(configChanges);
mStateListAnimatorCache.onConfigurationChange(configChanges);
mColorStateListCache.clear();
flushLayoutCache();
}
synchronized (sSync) {
if (mPluralRule != null) {
mPluralRule = NativePluralRules.forLocale(config.locale);
}
}
}
/**
* Called by ConfigurationBoundResourceCacheTest via reflection.
*/
private int calcConfigChanges(Configuration config) {
int configChanges = 0xfffffff;
if (config != null) {
mTmpConfig.setTo(config);
int density = config.densityDpi;
if (density == Configuration.DENSITY_DPI_UNDEFINED) {
density = mMetrics.noncompatDensityDpi;
}
mCompatibilityInfo.applyToConfiguration(density, mTmpConfig);
if (mTmpConfig.locale == null) {
mTmpConfig.locale = Locale.getDefault();
mTmpConfig.setLayoutDirection(mTmpConfig.locale);
}
configChanges = mConfiguration.updateFrom(mTmpConfig);
configChanges = ActivityInfo.activityInfoConfigToNative(configChanges);
}
return configChanges;
}
private void clearDrawableCachesLocked(
ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches,
int configChanges) {
final int N = caches.size();
for (int i = 0; i < N; i++) {
clearDrawableCacheLocked(caches.valueAt(i), configChanges);
}
}
private void clearDrawableCacheLocked(
LongSparseArray<WeakReference<ConstantState>> cache, int configChanges) {
if (DEBUG_CONFIG) {
Log.d(TAG, "Cleaning up drawables config changes: 0x"
+ Integer.toHexString(configChanges));
}
final int N = cache.size();
for (int i = 0; i < N; i++) {
final WeakReference<ConstantState> ref = cache.valueAt(i);
if (ref != null) {
final ConstantState cs = ref.get();
if (cs != null) {
if (Configuration.needNewResources(
configChanges, cs.getChangingConfigurations())) {
if (DEBUG_CONFIG) {
Log.d(TAG, "FLUSHING #0x"
+ Long.toHexString(cache.keyAt(i))
+ " / " + cs + " with changes: 0x"
+ Integer.toHexString(cs.getChangingConfigurations()));
}
cache.setValueAt(i, null);
} else if (DEBUG_CONFIG) {
Log.d(TAG, "(Keeping #0x"
+ Long.toHexString(cache.keyAt(i))
+ " / " + cs + " with changes: 0x"
+ Integer.toHexString(cs.getChangingConfigurations())
+ ")");
}
}
}
}
}
/**
* {@code Locale.toLanguageTag} will transform the obsolete (and deprecated)
* language codes "in", "ji" and "iw" to "id", "yi" and "he" respectively.
*
* All released versions of android prior to "L" used the deprecated language
* tags, so we will need to support them for backwards compatibility.
*
* Note that this conversion needs to take place *after* the call to
* {@code toLanguageTag} because that will convert all the deprecated codes to
* the new ones, even if they're set manually.
*/
private static String adjustLanguageTag(String languageTag) {
final int separator = languageTag.indexOf('-');
final String language;
final String remainder;
if (separator == -1) {
language = languageTag;
remainder = "";
} else {
language = languageTag.substring(0, separator);
remainder = languageTag.substring(separator);
}
return Locale.adjustLanguageCode(language) + remainder;
}
/**
* Update the system resources configuration if they have previously
* been initialized.
*
* @hide
*/
public static void updateSystemConfiguration(Configuration config, DisplayMetrics metrics,
CompatibilityInfo compat) {
if (mSystem != null) {
mSystem.updateConfiguration(config, metrics, compat);
//Log.i(TAG, "Updated system resources " + mSystem
// + ": " + mSystem.getConfiguration());
}
}
/**
* Return the current display metrics that are in effect for this resource
* object. The returned object should be treated as read-only.
*
* @return The resource's current display metrics.
*/
public DisplayMetrics getDisplayMetrics() {
if (DEBUG_CONFIG) Slog.v(TAG, "Returning DisplayMetrics: " + mMetrics.widthPixels
+ "x" + mMetrics.heightPixels + " " + mMetrics.density);
return mMetrics;
}
/**
* Return the current configuration that is in effect for this resource
* object. The returned object should be treated as read-only.
*
* @return The resource's current configuration.
*/
public Configuration getConfiguration() {
return mConfiguration;
}
/**
* Return the compatibility mode information for the application.
* The returned object should be treated as read-only.
*
* @return compatibility info.
* @hide
*/
public CompatibilityInfo getCompatibilityInfo() {
return mCompatibilityInfo;
}
/**
* This is just for testing.
* @hide
*/
public void setCompatibilityInfo(CompatibilityInfo ci) {
if (ci != null) {
mCompatibilityInfo = ci;
updateConfiguration(mConfiguration, mMetrics);
}
}
/**
* Return a resource identifier for the given resource name. A fully
* qualified resource name is of the form "package:type/entry". The first
* two components (package and type) are optional if defType and
* defPackage, respectively, are specified here.
*
* <p>Note: use of this function is discouraged. It is much more
* efficient to retrieve resources by identifier than by name.
*
* @param name The name of the desired resource.
* @param defType Optional default resource type to find, if "type/" is
* not included in the name. Can be null to require an
* explicit type.
* @param defPackage Optional default package to find, if "package:" is
* not included in the name. Can be null to require an
* explicit package.
*
* @return int The associated resource identifier. Returns 0 if no such
* resource was found. (0 is not a valid resource ID.)
*/
public int getIdentifier(String name, String defType, String defPackage) {
if (name == null) {
throw new NullPointerException("name is null");
}
try {
return Integer.parseInt(name);
} catch (Exception e) {
// Ignore
}
return mAssets.getResourceIdentifier(name, defType, defPackage);
}
/**
* Return true if given resource identifier includes a package.
*
* @hide
*/
public static boolean resourceHasPackage(int resid) {
return (resid >>> 24) != 0;
}
/**
* Return the full name for a given resource identifier. This name is
* a single string of the form "package:type/entry".
*
* @param resid The resource identifier whose name is to be retrieved.
*
* @return A string holding the name of the resource.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @see #getResourcePackageName
* @see #getResourceTypeName
* @see #getResourceEntryName
*/
public String getResourceName(int resid) throws NotFoundException {
String str = mAssets.getResourceName(resid);
if (str != null) return str;
throw new NotFoundException("Unable to find resource ID #0x"
+ Integer.toHexString(resid));
}
/**
* Return the package name for a given resource identifier.
*
* @param resid The resource identifier whose package name is to be
* retrieved.
*
* @return A string holding the package name of the resource.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @see #getResourceName
*/
public String getResourcePackageName(int resid) throws NotFoundException {
String str = mAssets.getResourcePackageName(resid);
if (str != null) return str;
throw new NotFoundException("Unable to find resource ID #0x"
+ Integer.toHexString(resid));
}
/**
* Return the type name for a given resource identifier.
*
* @param resid The resource identifier whose type name is to be
* retrieved.
*
* @return A string holding the type name of the resource.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @see #getResourceName
*/
public String getResourceTypeName(int resid) throws NotFoundException {
String str = mAssets.getResourceTypeName(resid);
if (str != null) return str;
throw new NotFoundException("Unable to find resource ID #0x"
+ Integer.toHexString(resid));
}
/**
* Return the entry name for a given resource identifier.
*
* @param resid The resource identifier whose entry name is to be
* retrieved.
*
* @return A string holding the entry name of the resource.
*
* @throws NotFoundException Throws NotFoundException if the given ID does not exist.
*
* @see #getResourceName
*/
public String getResourceEntryName(int resid) throws NotFoundException {
String str = mAssets.getResourceEntryName(resid);
if (str != null) return str;
throw new NotFoundException("Unable to find resource ID #0x"
+ Integer.toHexString(resid));
}
/**
* Parse a series of {@link android.R.styleable#Extra &lt;extra&gt;} tags from
* an XML file. You call this when you are at the parent tag of the
* extra tags, and it will return once all of the child tags have been parsed.
* This will call {@link #parseBundleExtra} for each extra tag encountered.
*
* @param parser The parser from which to retrieve the extras.
* @param outBundle A Bundle in which to place all parsed extras.
* @throws XmlPullParserException
* @throws IOException
*/
public void parseBundleExtras(XmlResourceParser parser, Bundle outBundle)
throws XmlPullParserException, IOException {
int outerDepth = parser.getDepth();
int type;
while ((type=parser.next()) != XmlPullParser.END_DOCUMENT
&& (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) {
if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) {
continue;
}
String nodeName = parser.getName();
if (nodeName.equals("extra")) {
parseBundleExtra("extra", parser, outBundle);
XmlUtils.skipCurrentTag(parser);
} else {
XmlUtils.skipCurrentTag(parser);
}
}
}
/**
* Parse a name/value pair out of an XML tag holding that data. The
* AttributeSet must be holding the data defined by
* {@link android.R.styleable#Extra}. The following value types are supported:
* <ul>
* <li> {@link TypedValue#TYPE_STRING}:
* {@link Bundle#putCharSequence Bundle.putCharSequence()}
* <li> {@link TypedValue#TYPE_INT_BOOLEAN}:
* {@link Bundle#putCharSequence Bundle.putBoolean()}
* <li> {@link TypedValue#TYPE_FIRST_INT}-{@link TypedValue#TYPE_LAST_INT}:
* {@link Bundle#putCharSequence Bundle.putBoolean()}
* <li> {@link TypedValue#TYPE_FLOAT}:
* {@link Bundle#putCharSequence Bundle.putFloat()}
* </ul>
*
* @param tagName The name of the tag these attributes come from; this is
* only used for reporting error messages.
* @param attrs The attributes from which to retrieve the name/value pair.
* @param outBundle The Bundle in which to place the parsed value.
* @throws XmlPullParserException If the attributes are not valid.
*/
public void parseBundleExtra(String tagName, AttributeSet attrs,
Bundle outBundle) throws XmlPullParserException {
TypedArray sa = obtainAttributes(attrs,
com.android.internal.R.styleable.Extra);
String name = sa.getString(
com.android.internal.R.styleable.Extra_name);
if (name == null) {
sa.recycle();
throw new XmlPullParserException("<" + tagName
+ "> requires an android:name attribute at "
+ attrs.getPositionDescription());
}
TypedValue v = sa.peekValue(
com.android.internal.R.styleable.Extra_value);
if (v != null) {
if (v.type == TypedValue.TYPE_STRING) {
CharSequence cs = v.coerceToString();
outBundle.putCharSequence(name, cs);
} else if (v.type == TypedValue.TYPE_INT_BOOLEAN) {
outBundle.putBoolean(name, v.data != 0);
} else if (v.type >= TypedValue.TYPE_FIRST_INT
&& v.type <= TypedValue.TYPE_LAST_INT) {
outBundle.putInt(name, v.data);
} else if (v.type == TypedValue.TYPE_FLOAT) {
outBundle.putFloat(name, v.getFloat());
} else {
sa.recycle();
throw new XmlPullParserException("<" + tagName
+ "> only supports string, integer, float, color, and boolean at "
+ attrs.getPositionDescription());
}
} else {
sa.recycle();
throw new XmlPullParserException("<" + tagName
+ "> requires an android:value or android:resource attribute at "
+ attrs.getPositionDescription());
}
sa.recycle();
}
/**
* Retrieve underlying AssetManager storage for these resources.
*/
public final AssetManager getAssets() {
return mAssets;
}
/**
* Call this to remove all cached loaded layout resources from the
* Resources object. Only intended for use with performance testing
* tools.
*/
public final void flushLayoutCache() {
synchronized (mCachedXmlBlockIds) {
// First see if this block is in our cache.
final int num = mCachedXmlBlockIds.length;
for (int i=0; i<num; i++) {
mCachedXmlBlockIds[i] = -0;
XmlBlock oldBlock = mCachedXmlBlocks[i];
if (oldBlock != null) {
oldBlock.close();
}
mCachedXmlBlocks[i] = null;
}
}
}
/**
* Start preloading of resource data using this Resources object. Only
* for use by the zygote process for loading common system resources.
* {@hide}
*/
public final void startPreloading() {
synchronized (sSync) {
if (sPreloaded) {
throw new IllegalStateException("Resources already preloaded");
}
sPreloaded = true;
mPreloading = true;
sPreloadedDensity = DisplayMetrics.DENSITY_DEVICE;
mConfiguration.densityDpi = sPreloadedDensity;
updateConfiguration(null, null);
}
}
/**
* Called by zygote when it is done preloading resources, to change back
* to normal Resources operation.
*/
public final void finishPreloading() {
if (mPreloading) {
mPreloading = false;
flushLayoutCache();
}
}
/**
* @hide
*/
public LongSparseArray<ConstantState> getPreloadedDrawables() {
return sPreloadedDrawables[0];
}
private boolean verifyPreloadConfig(int changingConfigurations, int allowVarying,
int resourceId, String name) {
// We allow preloading of resources even if they vary by font scale (which
// doesn't impact resource selection) or density (which we handle specially by
// simply turning off all preloading), as well as any other configs specified
// by the caller.
if (((changingConfigurations&~(ActivityInfo.CONFIG_FONT_SCALE |
ActivityInfo.CONFIG_DENSITY)) & ~allowVarying) != 0) {
String resName;
try {
resName = getResourceName(resourceId);
} catch (NotFoundException e) {
resName = "?";
}
// This should never happen in production, so we should log a
// warning even if we're not debugging.
Log.w(TAG, "Preloaded " + name + " resource #0x"
+ Integer.toHexString(resourceId)
+ " (" + resName + ") that varies with configuration!!");
return false;
}
if (TRACE_FOR_PRELOAD) {
String resName;
try {
resName = getResourceName(resourceId);
} catch (NotFoundException e) {
resName = "?";
}
Log.w(TAG, "Preloading " + name + " resource #0x"
+ Integer.toHexString(resourceId)
+ " (" + resName + ")");
}
return true;
}
/*package*/ Drawable loadDrawable(TypedValue value, int id, Theme theme) throws NotFoundException {
if (TRACE_FOR_PRELOAD) {
// Log only framework resources
if ((id >>> 24) == 0x1) {
final String name = getResourceName(id);
if (name != null) {
Log.d("PreloadDrawable", name);
}
}
}
final boolean isColorDrawable;
final ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches;
final long key;
if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT
&& value.type <= TypedValue.TYPE_LAST_COLOR_INT) {
isColorDrawable = true;
caches = mColorDrawableCache;
key = value.data;
} else {
isColorDrawable = false;
caches = mDrawableCache;
key = (((long) value.assetCookie) << 32) | value.data;
}
// First, check whether we have a cached version of this drawable
// that was inflated against the specified theme.
if (!mPreloading) {
final Drawable cachedDrawable = getCachedDrawable(caches, key, theme);
if (cachedDrawable != null) {
return cachedDrawable;
}
}
// Next, check preloaded drawables. These are unthemed but may have
// themeable attributes.
final ConstantState cs;
if (isColorDrawable) {
cs = sPreloadedColorDrawables.get(key);
} else {
cs = sPreloadedDrawables[mConfiguration.getLayoutDirection()].get(key);
}
final Drawable dr;
if (cs != null) {
final Drawable clonedDr = cs.newDrawable(this);
if (theme != null) {
dr = clonedDr.mutate();
dr.applyTheme(theme);
dr.clearMutated();
} else {
dr = clonedDr;
}
} else if (isColorDrawable) {
dr = new ColorDrawable(value.data);
} else {
dr = loadDrawableForCookie(value, id, theme);
}
// If we were able to obtain a drawable, store it in the appropriate
// cache (either preload or themed).
if (dr != null) {
dr.setChangingConfigurations(value.changingConfigurations);
cacheDrawable(value, theme, isColorDrawable, caches, key, dr);
}
return dr;
}
private void cacheDrawable(TypedValue value, Theme theme, boolean isColorDrawable,
ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches,
long key, Drawable dr) {
final ConstantState cs = dr.getConstantState();
if (cs == null) {
return;
}
if (mPreloading) {
// Preloaded drawables never have a theme, but may be themeable.
final int changingConfigs = cs.getChangingConfigurations();
if (isColorDrawable) {
if (verifyPreloadConfig(changingConfigs, 0, value.resourceId, "drawable")) {
sPreloadedColorDrawables.put(key, cs);
}
} else {
if (verifyPreloadConfig(
changingConfigs, LAYOUT_DIR_CONFIG, value.resourceId, "drawable")) {
if ((changingConfigs & LAYOUT_DIR_CONFIG) == 0) {
// If this resource does not vary based on layout direction,
// we can put it in all of the preload maps.
sPreloadedDrawables[0].put(key, cs);
sPreloadedDrawables[1].put(key, cs);
} else {
// Otherwise, only in the layout dir we loaded it for.
sPreloadedDrawables[mConfiguration.getLayoutDirection()].put(key, cs);
}
}
}
} else {
synchronized (mAccessLock) {
final String themeKey = theme == null ? "" : theme.mKey;
LongSparseArray<WeakReference<ConstantState>> themedCache = caches.get(themeKey);
if (themedCache == null) {
themedCache = new LongSparseArray<WeakReference<ConstantState>>(1);
caches.put(themeKey, themedCache);
}
themedCache.put(key, new WeakReference<ConstantState>(cs));
}
}
}
/**
* Loads a drawable from XML or resources stream.
*/
private Drawable loadDrawableForCookie(TypedValue value, int id, Theme theme) {
if (value.string == null) {
throw new NotFoundException("Resource \"" + getResourceName(id) + "\" ("
+ Integer.toHexString(id) + ") is not a Drawable (color or path): " + value);
}
final String file = value.string.toString();
if (TRACE_FOR_MISS_PRELOAD) {
// Log only framework resources
if ((id >>> 24) == 0x1) {
final String name = getResourceName(id);
if (name != null) {
Log.d(TAG, "Loading framework drawable #" + Integer.toHexString(id)
+ ": " + name + " at " + file);
}
}
}
if (DEBUG_LOAD) {
Log.v(TAG, "Loading drawable for cookie " + value.assetCookie + ": " + file);
}
final Drawable dr;
Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, file);
try {
if (file.endsWith(".xml")) {
final XmlResourceParser rp = loadXmlResourceParser(
file, id, value.assetCookie, "drawable");
dr = Drawable.createFromXml(this, rp, theme);
rp.close();
} else {
final InputStream is = mAssets.openNonAsset(
value.assetCookie, file, AssetManager.ACCESS_STREAMING);
dr = Drawable.createFromResourceStream(this, value, is, file, null);
is.close();
}
} catch (Exception e) {
Trace.traceEnd(Trace.TRACE_TAG_RESOURCES);
final NotFoundException rnf = new NotFoundException(
"File " + file + " from drawable resource ID #0x" + Integer.toHexString(id));
rnf.initCause(e);
throw rnf;
}
Trace.traceEnd(Trace.TRACE_TAG_RESOURCES);
return dr;
}
private Drawable getCachedDrawable(
ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches,
long key, Theme theme) {
synchronized (mAccessLock) {
final String themeKey = theme != null ? theme.mKey : "";
final LongSparseArray<WeakReference<ConstantState>> themedCache = caches.get(themeKey);
if (themedCache != null) {
final Drawable themedDrawable = getCachedDrawableLocked(themedCache, key);
if (themedDrawable != null) {
return themedDrawable;
}
}
// No cached drawable, we'll need to create a new one.
return null;
}
}
private ConstantState getConstantStateLocked(
LongSparseArray<WeakReference<ConstantState>> drawableCache, long key) {
final WeakReference<ConstantState> wr = drawableCache.get(key);
if (wr != null) { // we have the key
final ConstantState entry = wr.get();
if (entry != null) {
//Log.i(TAG, "Returning cached drawable @ #" +
// Integer.toHexString(((Integer)key).intValue())
// + " in " + this + ": " + entry);
return entry;
} else { // our entry has been purged
drawableCache.delete(key);
}
}
return null;
}
private Drawable getCachedDrawableLocked(
LongSparseArray<WeakReference<ConstantState>> drawableCache, long key) {
final ConstantState entry = getConstantStateLocked(drawableCache, key);
if (entry != null) {
return entry.newDrawable(this);
}
return null;
}
/*package*/ ColorStateList loadColorStateList(TypedValue value, int id)
throws NotFoundException {
if (TRACE_FOR_PRELOAD) {
// Log only framework resources
if ((id >>> 24) == 0x1) {
final String name = getResourceName(id);
if (name != null) android.util.Log.d("PreloadColorStateList", name);
}
}
final long key = (((long) value.assetCookie) << 32) | value.data;
ColorStateList csl;
if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT &&
value.type <= TypedValue.TYPE_LAST_COLOR_INT) {
csl = sPreloadedColorStateLists.get(key);
if (csl != null) {
return csl;
}
csl = ColorStateList.valueOf(value.data);
if (mPreloading) {
if (verifyPreloadConfig(value.changingConfigurations, 0, value.resourceId,
"color")) {
sPreloadedColorStateLists.put(key, csl);
}
}
return csl;
}
csl = getCachedColorStateList(key);
if (csl != null) {
return csl;
}
csl = sPreloadedColorStateLists.get(key);
if (csl != null) {
return csl;
}
if (value.string == null) {
throw new NotFoundException(
"Resource is not a ColorStateList (color or path): " + value);
}
final String file = value.string.toString();
if (file.endsWith(".xml")) {
Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, file);
try {
final XmlResourceParser rp = loadXmlResourceParser(
file, id, value.assetCookie, "colorstatelist");
csl = ColorStateList.createFromXml(this, rp);
rp.close();
} catch (Exception e) {
Trace.traceEnd(Trace.TRACE_TAG_RESOURCES);
NotFoundException rnf = new NotFoundException(
"File " + file + " from color state list resource ID #0x"
+ Integer.toHexString(id));
rnf.initCause(e);
throw rnf;
}
Trace.traceEnd(Trace.TRACE_TAG_RESOURCES);
} else {
throw new NotFoundException(
"File " + file + " from drawable resource ID #0x"
+ Integer.toHexString(id) + ": .xml extension required");
}
if (csl != null) {
if (mPreloading) {
if (verifyPreloadConfig(value.changingConfigurations, 0, value.resourceId,
"color")) {
sPreloadedColorStateLists.put(key, csl);
}
} else {
synchronized (mAccessLock) {
//Log.i(TAG, "Saving cached color state list @ #" +
// Integer.toHexString(key.intValue())
// + " in " + this + ": " + csl);
mColorStateListCache.put(key, new WeakReference<ColorStateList>(csl));
}
}
}
return csl;
}
private ColorStateList getCachedColorStateList(long key) {
synchronized (mAccessLock) {
WeakReference<ColorStateList> wr = mColorStateListCache.get(key);
if (wr != null) { // we have the key
ColorStateList entry = wr.get();
if (entry != null) {
//Log.i(TAG, "Returning cached color state list @ #" +
// Integer.toHexString(((Integer)key).intValue())
// + " in " + this + ": " + entry);
return entry;
} else { // our entry has been purged
mColorStateListCache.delete(key);
}
}
}
return null;
}
/*package*/ XmlResourceParser loadXmlResourceParser(int id, String type)
throws NotFoundException {
synchronized (mAccessLock) {
TypedValue value = mTmpValue;
if (value == null) {
mTmpValue = value = new TypedValue();
}
getValue(id, value, true);
if (value.type == TypedValue.TYPE_STRING) {
return loadXmlResourceParser(value.string.toString(), id,
value.assetCookie, type);
}
throw new NotFoundException(
"Resource ID #0x" + Integer.toHexString(id) + " type #0x"
+ Integer.toHexString(value.type) + " is not valid");
}
}
/*package*/ XmlResourceParser loadXmlResourceParser(String file, int id,
int assetCookie, String type) throws NotFoundException {
if (id != 0) {
try {
// These may be compiled...
synchronized (mCachedXmlBlockIds) {
// First see if this block is in our cache.
final int num = mCachedXmlBlockIds.length;
for (int i=0; i<num; i++) {
if (mCachedXmlBlockIds[i] == id) {
//System.out.println("**** REUSING XML BLOCK! id="
// + id + ", index=" + i);
return mCachedXmlBlocks[i].newParser();
}
}
// Not in the cache, create a new block and put it at
// the next slot in the cache.
XmlBlock block = mAssets.openXmlBlockAsset(
assetCookie, file);
if (block != null) {
int pos = mLastCachedXmlBlockIndex+1;
if (pos >= num) pos = 0;
mLastCachedXmlBlockIndex = pos;
XmlBlock oldBlock = mCachedXmlBlocks[pos];
if (oldBlock != null) {
oldBlock.close();
}
mCachedXmlBlockIds[pos] = id;
mCachedXmlBlocks[pos] = block;
//System.out.println("**** CACHING NEW XML BLOCK! id="
// + id + ", index=" + pos);
return block.newParser();
}
}
} catch (Exception e) {
NotFoundException rnf = new NotFoundException(
"File " + file + " from xml type " + type + " resource ID #0x"
+ Integer.toHexString(id));
rnf.initCause(e);
throw rnf;
}
}
throw new NotFoundException(
"File " + file + " from xml type " + type + " resource ID #0x"
+ Integer.toHexString(id));
}
/*package*/ void recycleCachedStyledAttributes(TypedArray attrs) {
synchronized (mAccessLock) {
final TypedArray cached = mCachedStyledAttributes;
if (cached == null || cached.mData.length < attrs.mData.length) {
mCachedStyledAttributes = attrs;
}
}
}
private Resources() {
mAssets = AssetManager.getSystem();
// NOTE: Intentionally leaving this uninitialized (all values set
// to zero), so that anyone who tries to do something that requires
// metrics will get a very wrong value.
mConfiguration.setToDefaults();
mMetrics.setToDefaults();
updateConfiguration(null, null);
mAssets.ensureStringBlocks();
}
}