| /* |
| * Copyright (C) 2010 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.animation; |
| |
| import android.content.Context; |
| import android.content.res.ConfigurationBoundResourceCache; |
| import android.content.res.ConstantState; |
| import android.content.res.Resources; |
| import android.content.res.Resources.NotFoundException; |
| import android.content.res.Resources.Theme; |
| import android.content.res.TypedArray; |
| import android.content.res.XmlResourceParser; |
| import android.graphics.Path; |
| import android.util.AttributeSet; |
| import android.util.Log; |
| import android.util.PathParser; |
| import android.util.StateSet; |
| import android.util.TypedValue; |
| import android.util.Xml; |
| import android.view.InflateException; |
| import android.view.animation.AnimationUtils; |
| import android.view.animation.BaseInterpolator; |
| import android.view.animation.Interpolator; |
| |
| import com.android.internal.R; |
| |
| import org.xmlpull.v1.XmlPullParser; |
| import org.xmlpull.v1.XmlPullParserException; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| |
| /** |
| * This class is used to instantiate animator XML files into Animator objects. |
| * <p> |
| * For performance reasons, inflation relies heavily on pre-processing of |
| * XML files that is done at build time. Therefore, it is not currently possible |
| * to use this inflater with an XmlPullParser over a plain XML file at runtime; |
| * it only works with an XmlPullParser returned from a compiled resource (R. |
| * <em>something</em> file.) |
| */ |
| public class AnimatorInflater { |
| private static final String TAG = "AnimatorInflater"; |
| /** |
| * These flags are used when parsing AnimatorSet objects |
| */ |
| private static final int TOGETHER = 0; |
| private static final int SEQUENTIALLY = 1; |
| |
| /** |
| * Enum values used in XML attributes to indicate the value for mValueType |
| */ |
| private static final int VALUE_TYPE_FLOAT = 0; |
| private static final int VALUE_TYPE_INT = 1; |
| private static final int VALUE_TYPE_PATH = 2; |
| private static final int VALUE_TYPE_COLOR = 4; |
| private static final int VALUE_TYPE_CUSTOM = 5; |
| |
| private static final boolean DBG_ANIMATOR_INFLATER = false; |
| |
| // used to calculate changing configs for resource references |
| private static final TypedValue sTmpTypedValue = new TypedValue(); |
| |
| /** |
| * Loads an {@link Animator} object from a resource |
| * |
| * @param context Application context used to access resources |
| * @param id The resource id of the animation to load |
| * @return The animator object reference by the specified id |
| * @throws android.content.res.Resources.NotFoundException when the animation cannot be loaded |
| */ |
| public static Animator loadAnimator(Context context, int id) |
| throws NotFoundException { |
| return loadAnimator(context.getResources(), context.getTheme(), id); |
| } |
| |
| /** |
| * Loads an {@link Animator} object from a resource |
| * |
| * @param resources The resources |
| * @param theme The theme |
| * @param id The resource id of the animation to load |
| * @return The animator object reference by the specified id |
| * @throws android.content.res.Resources.NotFoundException when the animation cannot be loaded |
| * @hide |
| */ |
| public static Animator loadAnimator(Resources resources, Theme theme, int id) |
| throws NotFoundException { |
| return loadAnimator(resources, theme, id, 1); |
| } |
| |
| /** @hide */ |
| public static Animator loadAnimator(Resources resources, Theme theme, int id, |
| float pathErrorScale) throws NotFoundException { |
| final ConfigurationBoundResourceCache<Animator> animatorCache = resources |
| .getAnimatorCache(); |
| Animator animator = animatorCache.get(id, theme); |
| if (animator != null) { |
| if (DBG_ANIMATOR_INFLATER) { |
| Log.d(TAG, "loaded animator from cache, " + resources.getResourceName(id)); |
| } |
| return animator; |
| } else if (DBG_ANIMATOR_INFLATER) { |
| Log.d(TAG, "cache miss for animator " + resources.getResourceName(id)); |
| } |
| XmlResourceParser parser = null; |
| try { |
| parser = resources.getAnimation(id); |
| animator = createAnimatorFromXml(resources, theme, parser, pathErrorScale); |
| if (animator != null) { |
| animator.appendChangingConfigurations(getChangingConfigs(resources, id)); |
| final ConstantState<Animator> constantState = animator.createConstantState(); |
| if (constantState != null) { |
| if (DBG_ANIMATOR_INFLATER) { |
| Log.d(TAG, "caching animator for res " + resources.getResourceName(id)); |
| } |
| animatorCache.put(id, theme, constantState); |
| // create a new animator so that cached version is never used by the user |
| animator = constantState.newInstance(resources, theme); |
| } |
| } |
| return animator; |
| } catch (XmlPullParserException ex) { |
| Resources.NotFoundException rnf = |
| new Resources.NotFoundException("Can't load animation resource ID #0x" + |
| Integer.toHexString(id)); |
| rnf.initCause(ex); |
| throw rnf; |
| } catch (IOException ex) { |
| Resources.NotFoundException rnf = |
| new Resources.NotFoundException("Can't load animation resource ID #0x" + |
| Integer.toHexString(id)); |
| rnf.initCause(ex); |
| throw rnf; |
| } finally { |
| if (parser != null) parser.close(); |
| } |
| } |
| |
| public static StateListAnimator loadStateListAnimator(Context context, int id) |
| throws NotFoundException { |
| final Resources resources = context.getResources(); |
| final ConfigurationBoundResourceCache<StateListAnimator> cache = resources |
| .getStateListAnimatorCache(); |
| final Theme theme = context.getTheme(); |
| StateListAnimator animator = cache.get(id, theme); |
| if (animator != null) { |
| return animator; |
| } |
| XmlResourceParser parser = null; |
| try { |
| parser = resources.getAnimation(id); |
| animator = createStateListAnimatorFromXml(context, parser, Xml.asAttributeSet(parser)); |
| if (animator != null) { |
| animator.appendChangingConfigurations(getChangingConfigs(resources, id)); |
| final ConstantState<StateListAnimator> constantState = animator |
| .createConstantState(); |
| if (constantState != null) { |
| cache.put(id, theme, constantState); |
| // return a clone so that the animator in constant state is never used. |
| animator = constantState.newInstance(resources, theme); |
| } |
| } |
| return animator; |
| } catch (XmlPullParserException ex) { |
| Resources.NotFoundException rnf = |
| new Resources.NotFoundException( |
| "Can't load state list animator resource ID #0x" + |
| Integer.toHexString(id) |
| ); |
| rnf.initCause(ex); |
| throw rnf; |
| } catch (IOException ex) { |
| Resources.NotFoundException rnf = |
| new Resources.NotFoundException( |
| "Can't load state list animator resource ID #0x" + |
| Integer.toHexString(id) |
| ); |
| rnf.initCause(ex); |
| throw rnf; |
| } finally { |
| if (parser != null) { |
| parser.close(); |
| } |
| } |
| } |
| |
| private static StateListAnimator createStateListAnimatorFromXml(Context context, |
| XmlPullParser parser, AttributeSet attributeSet) |
| throws IOException, XmlPullParserException { |
| int type; |
| StateListAnimator stateListAnimator = new StateListAnimator(); |
| |
| while (true) { |
| type = parser.next(); |
| switch (type) { |
| case XmlPullParser.END_DOCUMENT: |
| case XmlPullParser.END_TAG: |
| return stateListAnimator; |
| |
| case XmlPullParser.START_TAG: |
| // parse item |
| Animator animator = null; |
| if ("item".equals(parser.getName())) { |
| int attributeCount = parser.getAttributeCount(); |
| int[] states = new int[attributeCount]; |
| int stateIndex = 0; |
| for (int i = 0; i < attributeCount; i++) { |
| int attrName = attributeSet.getAttributeNameResource(i); |
| if (attrName == R.attr.animation) { |
| final int animId = attributeSet.getAttributeResourceValue(i, 0); |
| animator = loadAnimator(context, animId); |
| } else { |
| states[stateIndex++] = |
| attributeSet.getAttributeBooleanValue(i, false) ? |
| attrName : -attrName; |
| } |
| } |
| if (animator == null) { |
| animator = createAnimatorFromXml(context.getResources(), |
| context.getTheme(), parser, 1f); |
| } |
| |
| if (animator == null) { |
| throw new Resources.NotFoundException( |
| "animation state item must have a valid animation"); |
| } |
| stateListAnimator |
| .addState(StateSet.trimStateSet(states, stateIndex), animator); |
| } |
| break; |
| } |
| } |
| } |
| |
| /** |
| * PathDataEvaluator is used to interpolate between two paths which are |
| * represented in the same format but different control points' values. |
| * The path is represented as an array of PathDataNode here, which is |
| * fundamentally an array of floating point numbers. |
| */ |
| private static class PathDataEvaluator implements TypeEvaluator<PathParser.PathDataNode[]> { |
| private PathParser.PathDataNode[] mNodeArray; |
| |
| /** |
| * Create a PathParser.PathDataNode[] that does not reuse the animated value. |
| * Care must be taken when using this option because on every evaluation |
| * a new <code>PathParser.PathDataNode[]</code> will be allocated. |
| */ |
| private PathDataEvaluator() {} |
| |
| /** |
| * Create a PathDataEvaluator that reuses <code>nodeArray</code> for every evaluate() call. |
| * Caution must be taken to ensure that the value returned from |
| * {@link android.animation.ValueAnimator#getAnimatedValue()} is not cached, modified, or |
| * used across threads. The value will be modified on each <code>evaluate()</code> call. |
| * |
| * @param nodeArray The array to modify and return from <code>evaluate</code>. |
| */ |
| public PathDataEvaluator(PathParser.PathDataNode[] nodeArray) { |
| mNodeArray = nodeArray; |
| } |
| |
| @Override |
| public PathParser.PathDataNode[] evaluate(float fraction, |
| PathParser.PathDataNode[] startPathData, |
| PathParser.PathDataNode[] endPathData) { |
| if (!PathParser.canMorph(startPathData, endPathData)) { |
| throw new IllegalArgumentException("Can't interpolate between" |
| + " two incompatible pathData"); |
| } |
| |
| if (mNodeArray == null || !PathParser.canMorph(mNodeArray, startPathData)) { |
| mNodeArray = PathParser.deepCopyNodes(startPathData); |
| } |
| |
| for (int i = 0; i < startPathData.length; i++) { |
| mNodeArray[i].interpolatePathDataNode(startPathData[i], |
| endPathData[i], fraction); |
| } |
| |
| return mNodeArray; |
| } |
| } |
| |
| /** |
| * @param anim The animator, must not be null |
| * @param arrayAnimator Incoming typed array for Animator's attributes. |
| * @param arrayObjectAnimator Incoming typed array for Object Animator's |
| * attributes. |
| * @param pixelSize The relative pixel size, used to calculate the |
| * maximum error for path animations. |
| */ |
| private static void parseAnimatorFromTypeArray(ValueAnimator anim, |
| TypedArray arrayAnimator, TypedArray arrayObjectAnimator, float pixelSize) { |
| long duration = arrayAnimator.getInt(R.styleable.Animator_duration, 300); |
| |
| long startDelay = arrayAnimator.getInt(R.styleable.Animator_startOffset, 0); |
| |
| int valueType = arrayAnimator.getInt(R.styleable.Animator_valueType, |
| VALUE_TYPE_FLOAT); |
| |
| TypeEvaluator evaluator = null; |
| |
| boolean getFloats = (valueType == VALUE_TYPE_FLOAT); |
| |
| TypedValue tvFrom = arrayAnimator.peekValue(R.styleable.Animator_valueFrom); |
| boolean hasFrom = (tvFrom != null); |
| int fromType = hasFrom ? tvFrom.type : 0; |
| TypedValue tvTo = arrayAnimator.peekValue(R.styleable.Animator_valueTo); |
| boolean hasTo = (tvTo != null); |
| int toType = hasTo ? tvTo.type : 0; |
| |
| // TODO: Further clean up this part of code into 4 types : path, color, |
| // integer and float. |
| if (valueType == VALUE_TYPE_PATH) { |
| evaluator = setupAnimatorForPath(anim, arrayAnimator); |
| } else { |
| // Integer and float value types are handled here. |
| if ((hasFrom && (fromType >= TypedValue.TYPE_FIRST_COLOR_INT) && |
| (fromType <= TypedValue.TYPE_LAST_COLOR_INT)) || |
| (hasTo && (toType >= TypedValue.TYPE_FIRST_COLOR_INT) && |
| (toType <= TypedValue.TYPE_LAST_COLOR_INT))) { |
| // special case for colors: ignore valueType and get ints |
| getFloats = false; |
| evaluator = ArgbEvaluator.getInstance(); |
| } |
| setupValues(anim, arrayAnimator, getFloats, hasFrom, fromType, hasTo, toType); |
| } |
| |
| anim.setDuration(duration); |
| anim.setStartDelay(startDelay); |
| |
| if (arrayAnimator.hasValue(R.styleable.Animator_repeatCount)) { |
| anim.setRepeatCount( |
| arrayAnimator.getInt(R.styleable.Animator_repeatCount, 0)); |
| } |
| if (arrayAnimator.hasValue(R.styleable.Animator_repeatMode)) { |
| anim.setRepeatMode( |
| arrayAnimator.getInt(R.styleable.Animator_repeatMode, |
| ValueAnimator.RESTART)); |
| } |
| if (evaluator != null) { |
| anim.setEvaluator(evaluator); |
| } |
| |
| if (arrayObjectAnimator != null) { |
| setupObjectAnimator(anim, arrayObjectAnimator, getFloats, pixelSize); |
| } |
| } |
| |
| /** |
| * Setup the Animator to achieve path morphing. |
| * |
| * @param anim The target Animator which will be updated. |
| * @param arrayAnimator TypedArray for the ValueAnimator. |
| * @return the PathDataEvaluator. |
| */ |
| private static TypeEvaluator setupAnimatorForPath(ValueAnimator anim, |
| TypedArray arrayAnimator) { |
| TypeEvaluator evaluator = null; |
| String fromString = arrayAnimator.getString(R.styleable.Animator_valueFrom); |
| String toString = arrayAnimator.getString(R.styleable.Animator_valueTo); |
| PathParser.PathDataNode[] nodesFrom = PathParser.createNodesFromPathData(fromString); |
| PathParser.PathDataNode[] nodesTo = PathParser.createNodesFromPathData(toString); |
| |
| if (nodesFrom != null) { |
| if (nodesTo != null) { |
| anim.setObjectValues(nodesFrom, nodesTo); |
| if (!PathParser.canMorph(nodesFrom, nodesTo)) { |
| throw new InflateException(arrayAnimator.getPositionDescription() |
| + " Can't morph from " + fromString + " to " + toString); |
| } |
| } else { |
| anim.setObjectValues((Object)nodesFrom); |
| } |
| evaluator = new PathDataEvaluator(PathParser.deepCopyNodes(nodesFrom)); |
| } else if (nodesTo != null) { |
| anim.setObjectValues((Object)nodesTo); |
| evaluator = new PathDataEvaluator(PathParser.deepCopyNodes(nodesTo)); |
| } |
| |
| if (DBG_ANIMATOR_INFLATER && evaluator != null) { |
| Log.v(TAG, "create a new PathDataEvaluator here"); |
| } |
| |
| return evaluator; |
| } |
| |
| /** |
| * Setup ObjectAnimator's property or values from pathData. |
| * |
| * @param anim The target Animator which will be updated. |
| * @param arrayObjectAnimator TypedArray for the ObjectAnimator. |
| * @param getFloats True if the value type is float. |
| * @param pixelSize The relative pixel size, used to calculate the |
| * maximum error for path animations. |
| */ |
| private static void setupObjectAnimator(ValueAnimator anim, TypedArray arrayObjectAnimator, |
| boolean getFloats, float pixelSize) { |
| ObjectAnimator oa = (ObjectAnimator) anim; |
| String pathData = arrayObjectAnimator.getString(R.styleable.PropertyAnimator_pathData); |
| |
| // Note that if there is a pathData defined in the Object Animator, |
| // valueFrom / valueTo will be ignored. |
| if (pathData != null) { |
| String propertyXName = |
| arrayObjectAnimator.getString(R.styleable.PropertyAnimator_propertyXName); |
| String propertyYName = |
| arrayObjectAnimator.getString(R.styleable.PropertyAnimator_propertyYName); |
| |
| if (propertyXName == null && propertyYName == null) { |
| throw new InflateException(arrayObjectAnimator.getPositionDescription() |
| + " propertyXName or propertyYName is needed for PathData"); |
| } else { |
| Path path = PathParser.createPathFromPathData(pathData); |
| float error = 0.5f * pixelSize; // max half a pixel error |
| PathKeyframes keyframeSet = KeyframeSet.ofPath(path, error); |
| Keyframes xKeyframes; |
| Keyframes yKeyframes; |
| if (getFloats) { |
| xKeyframes = keyframeSet.createXFloatKeyframes(); |
| yKeyframes = keyframeSet.createYFloatKeyframes(); |
| } else { |
| xKeyframes = keyframeSet.createXIntKeyframes(); |
| yKeyframes = keyframeSet.createYIntKeyframes(); |
| } |
| PropertyValuesHolder x = null; |
| PropertyValuesHolder y = null; |
| if (propertyXName != null) { |
| x = PropertyValuesHolder.ofKeyframes(propertyXName, xKeyframes); |
| } |
| if (propertyYName != null) { |
| y = PropertyValuesHolder.ofKeyframes(propertyYName, yKeyframes); |
| } |
| if (x == null) { |
| oa.setValues(y); |
| } else if (y == null) { |
| oa.setValues(x); |
| } else { |
| oa.setValues(x, y); |
| } |
| } |
| } else { |
| String propertyName = |
| arrayObjectAnimator.getString(R.styleable.PropertyAnimator_propertyName); |
| oa.setPropertyName(propertyName); |
| } |
| } |
| |
| /** |
| * Setup ValueAnimator's values. |
| * This will handle all of the integer, float and color types. |
| * |
| * @param anim The target Animator which will be updated. |
| * @param arrayAnimator TypedArray for the ValueAnimator. |
| * @param getFloats True if the value type is float. |
| * @param hasFrom True if "valueFrom" exists. |
| * @param fromType The type of "valueFrom". |
| * @param hasTo True if "valueTo" exists. |
| * @param toType The type of "valueTo". |
| */ |
| private static void setupValues(ValueAnimator anim, TypedArray arrayAnimator, |
| boolean getFloats, boolean hasFrom, int fromType, boolean hasTo, int toType) { |
| int valueFromIndex = R.styleable.Animator_valueFrom; |
| int valueToIndex = R.styleable.Animator_valueTo; |
| if (getFloats) { |
| float valueFrom; |
| float valueTo; |
| if (hasFrom) { |
| if (fromType == TypedValue.TYPE_DIMENSION) { |
| valueFrom = arrayAnimator.getDimension(valueFromIndex, 0f); |
| } else { |
| valueFrom = arrayAnimator.getFloat(valueFromIndex, 0f); |
| } |
| if (hasTo) { |
| if (toType == TypedValue.TYPE_DIMENSION) { |
| valueTo = arrayAnimator.getDimension(valueToIndex, 0f); |
| } else { |
| valueTo = arrayAnimator.getFloat(valueToIndex, 0f); |
| } |
| anim.setFloatValues(valueFrom, valueTo); |
| } else { |
| anim.setFloatValues(valueFrom); |
| } |
| } else { |
| if (toType == TypedValue.TYPE_DIMENSION) { |
| valueTo = arrayAnimator.getDimension(valueToIndex, 0f); |
| } else { |
| valueTo = arrayAnimator.getFloat(valueToIndex, 0f); |
| } |
| anim.setFloatValues(valueTo); |
| } |
| } else { |
| int valueFrom; |
| int valueTo; |
| if (hasFrom) { |
| if (fromType == TypedValue.TYPE_DIMENSION) { |
| valueFrom = (int) arrayAnimator.getDimension(valueFromIndex, 0f); |
| } else if ((fromType >= TypedValue.TYPE_FIRST_COLOR_INT) && |
| (fromType <= TypedValue.TYPE_LAST_COLOR_INT)) { |
| valueFrom = arrayAnimator.getColor(valueFromIndex, 0); |
| } else { |
| valueFrom = arrayAnimator.getInt(valueFromIndex, 0); |
| } |
| if (hasTo) { |
| if (toType == TypedValue.TYPE_DIMENSION) { |
| valueTo = (int) arrayAnimator.getDimension(valueToIndex, 0f); |
| } else if ((toType >= TypedValue.TYPE_FIRST_COLOR_INT) && |
| (toType <= TypedValue.TYPE_LAST_COLOR_INT)) { |
| valueTo = arrayAnimator.getColor(valueToIndex, 0); |
| } else { |
| valueTo = arrayAnimator.getInt(valueToIndex, 0); |
| } |
| anim.setIntValues(valueFrom, valueTo); |
| } else { |
| anim.setIntValues(valueFrom); |
| } |
| } else { |
| if (hasTo) { |
| if (toType == TypedValue.TYPE_DIMENSION) { |
| valueTo = (int) arrayAnimator.getDimension(valueToIndex, 0f); |
| } else if ((toType >= TypedValue.TYPE_FIRST_COLOR_INT) && |
| (toType <= TypedValue.TYPE_LAST_COLOR_INT)) { |
| valueTo = arrayAnimator.getColor(valueToIndex, 0); |
| } else { |
| valueTo = arrayAnimator.getInt(valueToIndex, 0); |
| } |
| anim.setIntValues(valueTo); |
| } |
| } |
| } |
| } |
| |
| private static Animator createAnimatorFromXml(Resources res, Theme theme, XmlPullParser parser, |
| float pixelSize) |
| throws XmlPullParserException, IOException { |
| return createAnimatorFromXml(res, theme, parser, Xml.asAttributeSet(parser), null, 0, |
| pixelSize); |
| } |
| |
| private static Animator createAnimatorFromXml(Resources res, Theme theme, XmlPullParser parser, |
| AttributeSet attrs, AnimatorSet parent, int sequenceOrdering, float pixelSize) |
| throws XmlPullParserException, IOException { |
| Animator anim = null; |
| ArrayList<Animator> childAnims = null; |
| |
| // Make sure we are on a start tag. |
| int type; |
| int depth = parser.getDepth(); |
| |
| while (((type = parser.next()) != XmlPullParser.END_TAG || parser.getDepth() > depth) |
| && type != XmlPullParser.END_DOCUMENT) { |
| |
| if (type != XmlPullParser.START_TAG) { |
| continue; |
| } |
| |
| String name = parser.getName(); |
| |
| if (name.equals("objectAnimator")) { |
| anim = loadObjectAnimator(res, theme, attrs, pixelSize); |
| } else if (name.equals("animator")) { |
| anim = loadAnimator(res, theme, attrs, null, pixelSize); |
| } else if (name.equals("set")) { |
| anim = new AnimatorSet(); |
| TypedArray a; |
| if (theme != null) { |
| a = theme.obtainStyledAttributes(attrs, R.styleable.AnimatorSet, 0, 0); |
| } else { |
| a = res.obtainAttributes(attrs, R.styleable.AnimatorSet); |
| } |
| anim.appendChangingConfigurations(a.getChangingConfigurations()); |
| int ordering = a.getInt(R.styleable.AnimatorSet_ordering, TOGETHER); |
| createAnimatorFromXml(res, theme, parser, attrs, (AnimatorSet) anim, ordering, |
| pixelSize); |
| a.recycle(); |
| } else { |
| throw new RuntimeException("Unknown animator name: " + parser.getName()); |
| } |
| |
| if (parent != null) { |
| if (childAnims == null) { |
| childAnims = new ArrayList<Animator>(); |
| } |
| childAnims.add(anim); |
| } |
| } |
| if (parent != null && childAnims != null) { |
| Animator[] animsArray = new Animator[childAnims.size()]; |
| int index = 0; |
| for (Animator a : childAnims) { |
| animsArray[index++] = a; |
| } |
| if (sequenceOrdering == TOGETHER) { |
| parent.playTogether(animsArray); |
| } else { |
| parent.playSequentially(animsArray); |
| } |
| } |
| return anim; |
| |
| } |
| |
| private static ObjectAnimator loadObjectAnimator(Resources res, Theme theme, AttributeSet attrs, |
| float pathErrorScale) throws NotFoundException { |
| ObjectAnimator anim = new ObjectAnimator(); |
| |
| loadAnimator(res, theme, attrs, anim, pathErrorScale); |
| |
| return anim; |
| } |
| |
| /** |
| * Creates a new animation whose parameters come from the specified context |
| * and attributes set. |
| * |
| * @param res The resources |
| * @param attrs The set of attributes holding the animation parameters |
| * @param anim Null if this is a ValueAnimator, otherwise this is an |
| * ObjectAnimator |
| */ |
| private static ValueAnimator loadAnimator(Resources res, Theme theme, |
| AttributeSet attrs, ValueAnimator anim, float pathErrorScale) |
| throws NotFoundException { |
| TypedArray arrayAnimator = null; |
| TypedArray arrayObjectAnimator = null; |
| |
| if (theme != null) { |
| arrayAnimator = theme.obtainStyledAttributes(attrs, R.styleable.Animator, 0, 0); |
| } else { |
| arrayAnimator = res.obtainAttributes(attrs, R.styleable.Animator); |
| } |
| |
| // If anim is not null, then it is an object animator. |
| if (anim != null) { |
| if (theme != null) { |
| arrayObjectAnimator = theme.obtainStyledAttributes(attrs, |
| R.styleable.PropertyAnimator, 0, 0); |
| } else { |
| arrayObjectAnimator = res.obtainAttributes(attrs, R.styleable.PropertyAnimator); |
| } |
| anim.appendChangingConfigurations(arrayObjectAnimator.getChangingConfigurations()); |
| } |
| |
| if (anim == null) { |
| anim = new ValueAnimator(); |
| } |
| anim.appendChangingConfigurations(arrayAnimator.getChangingConfigurations()); |
| |
| parseAnimatorFromTypeArray(anim, arrayAnimator, arrayObjectAnimator, pathErrorScale); |
| |
| final int resID = arrayAnimator.getResourceId(R.styleable.Animator_interpolator, 0); |
| if (resID > 0) { |
| final Interpolator interpolator = AnimationUtils.loadInterpolator(res, theme, resID); |
| if (interpolator instanceof BaseInterpolator) { |
| anim.appendChangingConfigurations( |
| ((BaseInterpolator) interpolator).getChangingConfiguration()); |
| } |
| anim.setInterpolator(interpolator); |
| } |
| |
| arrayAnimator.recycle(); |
| if (arrayObjectAnimator != null) { |
| arrayObjectAnimator.recycle(); |
| } |
| return anim; |
| } |
| |
| private static int getChangingConfigs(Resources resources, int id) { |
| synchronized (sTmpTypedValue) { |
| resources.getValue(id, sTmpTypedValue, true); |
| return sTmpTypedValue.changingConfigurations; |
| } |
| } |
| } |
