| /* |
| * Copyright (C) 2007 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.os; |
| |
| import android.Manifest; |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.annotation.RequiresPermission; |
| import android.annotation.SuppressAutoDoc; |
| import android.annotation.SystemApi; |
| import android.annotation.TestApi; |
| import android.app.ActivityThread; |
| import android.app.Application; |
| import android.compat.annotation.UnsupportedAppUsage; |
| import android.content.Context; |
| import android.sysprop.DeviceProperties; |
| import android.sysprop.SocProperties; |
| import android.sysprop.TelephonyProperties; |
| import android.text.TextUtils; |
| import android.util.ArraySet; |
| import android.util.Slog; |
| import android.view.View; |
| |
| import dalvik.system.VMRuntime; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Objects; |
| import java.util.Set; |
| import java.util.stream.Collectors; |
| |
| /** |
| * Information about the current build, extracted from system properties. |
| */ |
| public class Build { |
| private static final String TAG = "Build"; |
| |
| /** Value used for when a build property is unknown. */ |
| public static final String UNKNOWN = "unknown"; |
| |
| /** Either a changelist number, or a label like "M4-rc20". */ |
| public static final String ID = getString("ro.build.id"); |
| |
| /** A build ID string meant for displaying to the user */ |
| public static final String DISPLAY = getString("ro.build.display.id"); |
| |
| /** The name of the overall product. */ |
| public static final String PRODUCT = getString("ro.product.name"); |
| |
| /** |
| * The product name for attestation. In non-default builds (like the AOSP build) the value of |
| * the 'PRODUCT' system property may be different to the one provisioned to KeyMint, |
| * and Keymint attestation would still attest to the product name which was provisioned. |
| * @hide |
| */ |
| @Nullable |
| @TestApi |
| public static final String PRODUCT_FOR_ATTESTATION = getVendorDeviceIdProperty("name"); |
| |
| /** The name of the industrial design. */ |
| public static final String DEVICE = getString("ro.product.device"); |
| |
| /** |
| * The device name for attestation. In non-default builds (like the AOSP build) the value of |
| * the 'DEVICE' system property may be different to the one provisioned to KeyMint, |
| * and Keymint attestation would still attest to the device name which was provisioned. |
| * @hide |
| */ |
| @Nullable |
| @TestApi |
| public static final String DEVICE_FOR_ATTESTATION = |
| getVendorDeviceIdProperty("device"); |
| |
| /** The name of the underlying board, like "goldfish". */ |
| public static final String BOARD = getString("ro.product.board"); |
| |
| /** |
| * The name of the instruction set (CPU type + ABI convention) of native code. |
| * |
| * @deprecated Use {@link #SUPPORTED_ABIS} instead. |
| */ |
| @Deprecated |
| public static final String CPU_ABI; |
| |
| /** |
| * The name of the second instruction set (CPU type + ABI convention) of native code. |
| * |
| * @deprecated Use {@link #SUPPORTED_ABIS} instead. |
| */ |
| @Deprecated |
| public static final String CPU_ABI2; |
| |
| /** The manufacturer of the product/hardware. */ |
| public static final String MANUFACTURER = getString("ro.product.manufacturer"); |
| |
| /** |
| * The manufacturer name for attestation. In non-default builds (like the AOSP build) the value |
| * of the 'MANUFACTURER' system property may be different to the one provisioned to KeyMint, |
| * and Keymint attestation would still attest to the manufacturer which was provisioned. |
| * @hide |
| */ |
| @Nullable |
| @TestApi |
| public static final String MANUFACTURER_FOR_ATTESTATION = |
| getVendorDeviceIdProperty("manufacturer"); |
| |
| /** The consumer-visible brand with which the product/hardware will be associated, if any. */ |
| public static final String BRAND = getString("ro.product.brand"); |
| |
| /** |
| * The product brand for attestation. In non-default builds (like the AOSP build) the value of |
| * the 'BRAND' system property may be different to the one provisioned to KeyMint, |
| * and Keymint attestation would still attest to the product brand which was provisioned. |
| * @hide |
| */ |
| @Nullable |
| @TestApi |
| public static final String BRAND_FOR_ATTESTATION = getVendorDeviceIdProperty("brand"); |
| |
| /** The end-user-visible name for the end product. */ |
| public static final String MODEL = getString("ro.product.model"); |
| |
| /** |
| * The product model for attestation. In non-default builds (like the AOSP build) the value of |
| * the 'MODEL' system property may be different to the one provisioned to KeyMint, |
| * and Keymint attestation would still attest to the product model which was provisioned. |
| * @hide |
| */ |
| @Nullable |
| @TestApi |
| public static final String MODEL_FOR_ATTESTATION = getVendorDeviceIdProperty("model"); |
| |
| /** The manufacturer of the device's primary system-on-chip. */ |
| @NonNull |
| public static final String SOC_MANUFACTURER = SocProperties.soc_manufacturer().orElse(UNKNOWN); |
| |
| /** The model name of the device's primary system-on-chip. */ |
| @NonNull |
| public static final String SOC_MODEL = SocProperties.soc_model().orElse(UNKNOWN); |
| |
| /** The system bootloader version number. */ |
| public static final String BOOTLOADER = getString("ro.bootloader"); |
| |
| /** |
| * The radio firmware version number. |
| * |
| * @deprecated The radio firmware version is frequently not |
| * available when this class is initialized, leading to a blank or |
| * "unknown" value for this string. Use |
| * {@link #getRadioVersion} instead. |
| */ |
| @Deprecated |
| public static final String RADIO = joinListOrElse( |
| TelephonyProperties.baseband_version(), UNKNOWN); |
| |
| /** The name of the hardware (from the kernel command line or /proc). */ |
| public static final String HARDWARE = getString("ro.hardware"); |
| |
| /** |
| * The SKU of the hardware (from the kernel command line). |
| * |
| * <p>The SKU is reported by the bootloader to configure system software features. |
| * If no value is supplied by the bootloader, this is reported as {@link #UNKNOWN}. |
| |
| */ |
| @NonNull |
| public static final String SKU = getString("ro.boot.hardware.sku"); |
| |
| /** |
| * The SKU of the device as set by the original design manufacturer (ODM). |
| * |
| * <p>This is a runtime-initialized property set during startup to configure device |
| * services. If no value is set, this is reported as {@link #UNKNOWN}. |
| * |
| * <p>The ODM SKU may have multiple variants for the same system SKU in case a manufacturer |
| * produces variants of the same design. For example, the same build may be released with |
| * variations in physical keyboard and/or display hardware, each with a different ODM SKU. |
| */ |
| @NonNull |
| public static final String ODM_SKU = getString("ro.boot.product.hardware.sku"); |
| |
| /** |
| * Whether this build was for an emulator device. |
| * @hide |
| */ |
| @UnsupportedAppUsage |
| @TestApi |
| public static final boolean IS_EMULATOR = getString("ro.boot.qemu").equals("1"); |
| |
| /** |
| * A hardware serial number, if available. Alphanumeric only, case-insensitive. |
| * This field is always set to {@link Build#UNKNOWN}. |
| * |
| * @deprecated Use {@link #getSerial()} instead. |
| **/ |
| @Deprecated |
| // IMPORTANT: This field should be initialized via a function call to |
| // prevent its value being inlined in the app during compilation because |
| // we will later set it to the value based on the app's target SDK. |
| public static final String SERIAL = getString("no.such.thing"); |
| |
| /** |
| * Gets the hardware serial number, if available. |
| * |
| * <p class="note"><b>Note:</b> Root access may allow you to modify device identifiers, such as |
| * the hardware serial number. If you change these identifiers, you can not use |
| * <a href="/training/articles/security-key-attestation.html">key attestation</a> to obtain |
| * proof of the device's original identifiers. KeyMint will reject an ID attestation request |
| * if the identifiers provided by the frameworks do not match the identifiers it was |
| * provisioned with. |
| * |
| * <p>Starting with API level 29, persistent device identifiers are guarded behind additional |
| * restrictions, and apps are recommended to use resettable identifiers (see <a |
| * href="/training/articles/user-data-ids">Best practices for unique identifiers</a>). This |
| * method can be invoked if one of the following requirements is met: |
| * <ul> |
| * <li>If the calling app has been granted the READ_PRIVILEGED_PHONE_STATE permission; this |
| * is a privileged permission that can only be granted to apps preloaded on the device. |
| * <li>If the calling app has carrier privileges (see {@link |
| * android.telephony.TelephonyManager#hasCarrierPrivileges}) on any active subscription. |
| * <li>If the calling app is the default SMS role holder (see {@link |
| * android.app.role.RoleManager#isRoleHeld(String)}). |
| * <li>If the calling app is the device owner of a fully-managed device, a profile |
| * owner of an organization-owned device, or their delegates (see {@link |
| * android.app.admin.DevicePolicyManager#getEnrollmentSpecificId()}). |
| * </ul> |
| * |
| * <p>If the calling app does not meet one of these requirements then this method will behave |
| * as follows: |
| * |
| * <ul> |
| * <li>If the calling app's target SDK is API level 28 or lower and the app has the |
| * READ_PHONE_STATE permission then {@link Build#UNKNOWN} is returned.</li> |
| * <li>If the calling app's target SDK is API level 28 or lower and the app does not have |
| * the READ_PHONE_STATE permission, or if the calling app is targeting API level 29 or |
| * higher, then a SecurityException is thrown.</li> |
| * </ul> |
| * |
| * @return The serial number if specified. |
| */ |
| @SuppressAutoDoc // No support for device / profile owner. |
| @RequiresPermission(Manifest.permission.READ_PRIVILEGED_PHONE_STATE) |
| public static String getSerial() { |
| IDeviceIdentifiersPolicyService service = IDeviceIdentifiersPolicyService.Stub |
| .asInterface(ServiceManager.getService(Context.DEVICE_IDENTIFIERS_SERVICE)); |
| try { |
| Application application = ActivityThread.currentApplication(); |
| String callingPackage = application != null ? application.getPackageName() : null; |
| return service.getSerialForPackage(callingPackage, null); |
| } catch (RemoteException e) { |
| e.rethrowFromSystemServer(); |
| } |
| return UNKNOWN; |
| } |
| |
| /** |
| * An ordered list of ABIs supported by this device. The most preferred ABI is the first |
| * element in the list. |
| * |
| * See {@link #SUPPORTED_32_BIT_ABIS} and {@link #SUPPORTED_64_BIT_ABIS}. |
| */ |
| public static final String[] SUPPORTED_ABIS = getStringList("ro.product.cpu.abilist", ","); |
| |
| /** |
| * An ordered list of <b>32 bit</b> ABIs supported by this device. The most preferred ABI |
| * is the first element in the list. |
| * |
| * See {@link #SUPPORTED_ABIS} and {@link #SUPPORTED_64_BIT_ABIS}. |
| */ |
| public static final String[] SUPPORTED_32_BIT_ABIS = |
| getStringList("ro.product.cpu.abilist32", ","); |
| |
| /** |
| * An ordered list of <b>64 bit</b> ABIs supported by this device. The most preferred ABI |
| * is the first element in the list. |
| * |
| * See {@link #SUPPORTED_ABIS} and {@link #SUPPORTED_32_BIT_ABIS}. |
| */ |
| public static final String[] SUPPORTED_64_BIT_ABIS = |
| getStringList("ro.product.cpu.abilist64", ","); |
| |
| /** {@hide} */ |
| @TestApi |
| public static boolean is64BitAbi(String abi) { |
| return VMRuntime.is64BitAbi(abi); |
| } |
| |
| static { |
| /* |
| * Adjusts CPU_ABI and CPU_ABI2 depending on whether or not a given process is 64 bit. |
| * 32 bit processes will always see 32 bit ABIs in these fields for backward |
| * compatibility. |
| */ |
| final String[] abiList; |
| if (VMRuntime.getRuntime().is64Bit()) { |
| abiList = SUPPORTED_64_BIT_ABIS; |
| } else { |
| abiList = SUPPORTED_32_BIT_ABIS; |
| } |
| |
| CPU_ABI = abiList[0]; |
| if (abiList.length > 1) { |
| CPU_ABI2 = abiList[1]; |
| } else { |
| CPU_ABI2 = ""; |
| } |
| } |
| |
| /** Various version strings. */ |
| public static class VERSION { |
| /** |
| * The internal value used by the underlying source control to |
| * represent this build. E.g., a perforce changelist number |
| * or a git hash. |
| */ |
| public static final String INCREMENTAL = getString("ro.build.version.incremental"); |
| |
| /** |
| * The user-visible version string. E.g., "1.0" or "3.4b5" or "bananas". |
| * |
| * This field is an opaque string. Do not assume that its value |
| * has any particular structure or that values of RELEASE from |
| * different releases can be somehow ordered. |
| */ |
| public static final String RELEASE = getString("ro.build.version.release"); |
| |
| /** |
| * The version string. May be {@link #RELEASE} or {@link #CODENAME} if |
| * not a final release build. |
| */ |
| @NonNull public static final String RELEASE_OR_CODENAME = getString( |
| "ro.build.version.release_or_codename"); |
| |
| /** |
| * The version string we show to the user; may be {@link #RELEASE} or |
| * a descriptive string if not a final release build. |
| */ |
| @NonNull public static final String RELEASE_OR_PREVIEW_DISPLAY = getString( |
| "ro.build.version.release_or_preview_display"); |
| |
| /** |
| * The base OS build the product is based on. |
| */ |
| public static final String BASE_OS = SystemProperties.get("ro.build.version.base_os", ""); |
| |
| /** |
| * The user-visible security patch level. This value represents the date when the device |
| * most recently applied a security patch. |
| */ |
| public static final String SECURITY_PATCH = SystemProperties.get( |
| "ro.build.version.security_patch", ""); |
| |
| /** |
| * The media performance class of the device or 0 if none. |
| * <p> |
| * If this value is not <code>0</code>, the device conforms to the media performance class |
| * definition of the SDK version of this value. This value never changes while a device is |
| * booted, but it may increase when the hardware manufacturer provides an OTA update. |
| * <p> |
| * Possible non-zero values are defined in {@link Build.VERSION_CODES} starting with |
| * {@link Build.VERSION_CODES#R}. |
| */ |
| public static final int MEDIA_PERFORMANCE_CLASS = |
| DeviceProperties.media_performance_class().orElse(0); |
| |
| /** |
| * The user-visible SDK version of the framework in its raw String |
| * representation; use {@link #SDK_INT} instead. |
| * |
| * @deprecated Use {@link #SDK_INT} to easily get this as an integer. |
| */ |
| @Deprecated |
| public static final String SDK = getString("ro.build.version.sdk"); |
| |
| /** |
| * The SDK version of the software currently running on this hardware |
| * device. This value never changes while a device is booted, but it may |
| * increase when the hardware manufacturer provides an OTA update. |
| * <p> |
| * Possible values are defined in {@link Build.VERSION_CODES}. |
| */ |
| public static final int SDK_INT = SystemProperties.getInt( |
| "ro.build.version.sdk", 0); |
| |
| /** |
| * The SDK version of the software that <em>initially</em> shipped on |
| * this hardware device. It <em>never</em> changes during the lifetime |
| * of the device, even when {@link #SDK_INT} increases due to an OTA |
| * update. |
| * <p> |
| * Possible values are defined in {@link Build.VERSION_CODES}. |
| * |
| * @see #SDK_INT |
| * @hide |
| */ |
| @SystemApi(client = SystemApi.Client.MODULE_LIBRARIES) |
| @TestApi |
| public static final int DEVICE_INITIAL_SDK_INT = SystemProperties |
| .getInt("ro.product.first_api_level", 0); |
| |
| /** |
| * The developer preview revision of a prerelease SDK. This value will always |
| * be <code>0</code> on production platform builds/devices. |
| * |
| * <p>When this value is nonzero, any new API added since the last |
| * officially published {@link #SDK_INT API level} is only guaranteed to be present |
| * on that specific preview revision. For example, an API <code>Activity.fooBar()</code> |
| * might be present in preview revision 1 but renamed or removed entirely in |
| * preview revision 2, which may cause an app attempting to call it to crash |
| * at runtime.</p> |
| * |
| * <p>Experimental apps targeting preview APIs should check this value for |
| * equality (<code>==</code>) with the preview SDK revision they were built for |
| * before using any prerelease platform APIs. Apps that detect a preview SDK revision |
| * other than the specific one they expect should fall back to using APIs from |
| * the previously published API level only to avoid unwanted runtime exceptions. |
| * </p> |
| */ |
| public static final int PREVIEW_SDK_INT = SystemProperties.getInt( |
| "ro.build.version.preview_sdk", 0); |
| |
| /** |
| * The SDK fingerprint for a given prerelease SDK. This value will always be |
| * {@code REL} on production platform builds/devices. |
| * |
| * <p>When this value is not {@code REL}, it contains a string fingerprint of the API |
| * surface exposed by the preview SDK. Preview platforms with different API surfaces |
| * will have different {@code PREVIEW_SDK_FINGERPRINT}. |
| * |
| * <p>This attribute is intended for use by installers for finer grained targeting of |
| * packages. Applications targeting preview APIs should not use this field and should |
| * instead use {@code PREVIEW_SDK_INT} or use reflection or other runtime checks to |
| * detect the presence of an API or guard themselves against unexpected runtime |
| * behavior. |
| * |
| * @hide |
| */ |
| @SystemApi |
| @NonNull public static final String PREVIEW_SDK_FINGERPRINT = SystemProperties.get( |
| "ro.build.version.preview_sdk_fingerprint", "REL"); |
| |
| /** |
| * The current development codename, or the string "REL" if this is |
| * a release build. |
| */ |
| public static final String CODENAME = getString("ro.build.version.codename"); |
| |
| /** |
| * All known codenames that are present in {@link VERSION_CODES}. |
| * |
| * <p>This includes in development codenames as well, i.e. if {@link #CODENAME} is not "REL" |
| * then the value of that is present in this set. |
| * |
| * <p>If a particular string is not present in this set, then it is either not a codename |
| * or a codename for a future release. For example, during Android R development, "Tiramisu" |
| * was not a known codename. |
| * |
| * @hide |
| */ |
| @SystemApi |
| @NonNull public static final Set<String> KNOWN_CODENAMES = |
| new ArraySet<>(getStringList("ro.build.version.known_codenames", ",")); |
| |
| private static final String[] ALL_CODENAMES |
| = getStringList("ro.build.version.all_codenames", ","); |
| |
| /** |
| * @hide |
| */ |
| @UnsupportedAppUsage |
| @TestApi |
| public static final String[] ACTIVE_CODENAMES = "REL".equals(ALL_CODENAMES[0]) |
| ? new String[0] : ALL_CODENAMES; |
| |
| /** |
| * The SDK version to use when accessing resources. |
| * Use the current SDK version code. For every active development codename |
| * we are operating under, we bump the assumed resource platform version by 1. |
| * @hide |
| */ |
| @TestApi |
| public static final int RESOURCES_SDK_INT = SDK_INT + ACTIVE_CODENAMES.length; |
| |
| /** |
| * The current lowest supported value of app target SDK. Applications targeting |
| * lower values may not function on devices running this SDK version. Its possible |
| * values are defined in {@link Build.VERSION_CODES}. |
| * |
| * @hide |
| */ |
| public static final int MIN_SUPPORTED_TARGET_SDK_INT = SystemProperties.getInt( |
| "ro.build.version.min_supported_target_sdk", 0); |
| } |
| |
| /** |
| * Enumeration of the currently known SDK version codes. These are the |
| * values that can be found in {@link VERSION#SDK}. Version numbers |
| * increment monotonically with each official platform release. |
| */ |
| public static class VERSION_CODES { |
| /** |
| * Magic version number for a current development build, which has |
| * not yet turned into an official release. |
| */ |
| // This must match VMRuntime.SDK_VERSION_CUR_DEVELOPMENT. |
| public static final int CUR_DEVELOPMENT = 10000; |
| |
| /** |
| * The original, first, version of Android. Yay! |
| * |
| * <p>Released publicly as Android 1.0 in September 2008. |
| */ |
| public static final int BASE = 1; |
| |
| /** |
| * First Android update. |
| * |
| * <p>Released publicly as Android 1.1 in February 2009. |
| */ |
| public static final int BASE_1_1 = 2; |
| |
| /** |
| * C. |
| * |
| * <p>Released publicly as Android 1.5 in April 2009. |
| */ |
| public static final int CUPCAKE = 3; |
| |
| /** |
| * D. |
| * |
| * <p>Released publicly as Android 1.6 in September 2009. |
| * <p>Applications targeting this or a later release will get these |
| * new changes in behavior:</p> |
| * <ul> |
| * <li> They must explicitly request the |
| * {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} permission to be |
| * able to modify the contents of the SD card. (Apps targeting |
| * earlier versions will always request the permission.) |
| * <li> They must explicitly request the |
| * {@link android.Manifest.permission#READ_PHONE_STATE} permission to be |
| * able to be able to retrieve phone state info. (Apps targeting |
| * earlier versions will always request the permission.) |
| * <li> They are assumed to support different screen densities and |
| * sizes. (Apps targeting earlier versions are assumed to only support |
| * medium density normal size screens unless otherwise indicated). |
| * They can still explicitly specify screen support either way with the |
| * supports-screens manifest tag. |
| * <li> {@link android.widget.TabHost} will use the new dark tab |
| * background design. |
| * </ul> |
| */ |
| public static final int DONUT = 4; |
| |
| /** |
| * E. |
| * |
| * <p>Released publicly as Android 2.0 in October 2009. |
| * <p>Applications targeting this or a later release will get these |
| * new changes in behavior:</p> |
| * <ul> |
| * <li> The {@link android.app.Service#onStartCommand |
| * Service.onStartCommand} function will return the new |
| * {@link android.app.Service#START_STICKY} behavior instead of the |
| * old compatibility {@link android.app.Service#START_STICKY_COMPATIBILITY}. |
| * <li> The {@link android.app.Activity} class will now execute back |
| * key presses on the key up instead of key down, to be able to detect |
| * canceled presses from virtual keys. |
| * <li> The {@link android.widget.TabWidget} class will use a new color scheme |
| * for tabs. In the new scheme, the foreground tab has a medium gray background |
| * the background tabs have a dark gray background. |
| * </ul> |
| */ |
| public static final int ECLAIR = 5; |
| |
| /** |
| * E incremental update. |
| * |
| * <p>Released publicly as Android 2.0.1 in December 2009. |
| */ |
| public static final int ECLAIR_0_1 = 6; |
| |
| /** |
| * E MR1. |
| * |
| * <p>Released publicly as Android 2.1 in January 2010. |
| */ |
| public static final int ECLAIR_MR1 = 7; |
| |
| /** |
| * F. |
| * |
| * <p>Released publicly as Android 2.2 in May 2010. |
| */ |
| public static final int FROYO = 8; |
| |
| /** |
| * G. |
| * |
| * <p>Released publicly as Android 2.3 in December 2010. |
| * <p>Applications targeting this or a later release will get these |
| * new changes in behavior:</p> |
| * <ul> |
| * <li> The application's notification icons will be shown on the new |
| * dark status bar background, so must be visible in this situation. |
| * </ul> |
| */ |
| public static final int GINGERBREAD = 9; |
| |
| /** |
| * G MR1. |
| * |
| * <p>Released publicly as Android 2.3.3 in February 2011. |
| */ |
| public static final int GINGERBREAD_MR1 = 10; |
| |
| /** |
| * H. |
| * |
| * <p>Released publicly as Android 3.0 in February 2011. |
| * <p>Applications targeting this or a later release will get these |
| * new changes in behavior:</p> |
| * <ul> |
| * <li> The default theme for applications is now dark holographic: |
| * {@link android.R.style#Theme_Holo}. |
| * <li> On large screen devices that do not have a physical menu |
| * button, the soft (compatibility) menu is disabled. |
| * <li> The activity lifecycle has changed slightly as per |
| * {@link android.app.Activity}. |
| * <li> An application will crash if it does not call through |
| * to the super implementation of its |
| * {@link android.app.Activity#onPause Activity.onPause()} method. |
| * <li> When an application requires a permission to access one of |
| * its components (activity, receiver, service, provider), this |
| * permission is no longer enforced when the application wants to |
| * access its own component. This means it can require a permission |
| * on a component that it does not itself hold and still access that |
| * component. |
| * <li> {@link android.content.Context#getSharedPreferences |
| * Context.getSharedPreferences()} will not automatically reload |
| * the preferences if they have changed on storage, unless |
| * {@link android.content.Context#MODE_MULTI_PROCESS} is used. |
| * <li> {@link android.view.ViewGroup#setMotionEventSplittingEnabled} |
| * will default to true. |
| * <li> {@link android.view.WindowManager.LayoutParams#FLAG_SPLIT_TOUCH} |
| * is enabled by default on windows. |
| * <li> {@link android.widget.PopupWindow#isSplitTouchEnabled() |
| * PopupWindow.isSplitTouchEnabled()} will return true by default. |
| * <li> {@link android.widget.GridView} and {@link android.widget.ListView} |
| * will use {@link android.view.View#setActivated View.setActivated} |
| * for selected items if they do not implement {@link android.widget.Checkable}. |
| * <li> {@link android.widget.Scroller} will be constructed with |
| * "flywheel" behavior enabled by default. |
| * </ul> |
| */ |
| public static final int HONEYCOMB = 11; |
| |
| /** |
| * H MR1. |
| * |
| * <p>Released publicly as Android 3.1 in May 2011. |
| */ |
| public static final int HONEYCOMB_MR1 = 12; |
| |
| /** |
| * H MR2. |
| * |
| * <p>Released publicly as Android 3.2 in July 2011. |
| * <p>Update to Honeycomb MR1 to support 7 inch tablets, improve |
| * screen compatibility mode, etc.</p> |
| * |
| * <p>As of this version, applications that don't say whether they |
| * support XLARGE screens will be assumed to do so only if they target |
| * {@link #HONEYCOMB} or later; it had been {@link #GINGERBREAD} or |
| * later. Applications that don't support a screen size at least as |
| * large as the current screen will provide the user with a UI to |
| * switch them in to screen size compatibility mode.</p> |
| * |
| * <p>This version introduces new screen size resource qualifiers |
| * based on the screen size in dp: see |
| * {@link android.content.res.Configuration#screenWidthDp}, |
| * {@link android.content.res.Configuration#screenHeightDp}, and |
| * {@link android.content.res.Configuration#smallestScreenWidthDp}. |
| * Supplying these in <supports-screens> as per |
| * {@link android.content.pm.ApplicationInfo#requiresSmallestWidthDp}, |
| * {@link android.content.pm.ApplicationInfo#compatibleWidthLimitDp}, and |
| * {@link android.content.pm.ApplicationInfo#largestWidthLimitDp} is |
| * preferred over the older screen size buckets and for older devices |
| * the appropriate buckets will be inferred from them.</p> |
| * |
| * <p>Applications targeting this or a later release will get these |
| * new changes in behavior:</p> |
| * <ul> |
| * <li><p>New {@link android.content.pm.PackageManager#FEATURE_SCREEN_PORTRAIT} |
| * and {@link android.content.pm.PackageManager#FEATURE_SCREEN_LANDSCAPE} |
| * features were introduced in this release. Applications that target |
| * previous platform versions are assumed to require both portrait and |
| * landscape support in the device; when targeting Honeycomb MR1 or |
| * greater the application is responsible for specifying any specific |
| * orientation it requires.</p> |
| * <li><p>{@link android.os.AsyncTask} will use the serial executor |
| * by default when calling {@link android.os.AsyncTask#execute}.</p> |
| * <li><p>{@link android.content.pm.ActivityInfo#configChanges |
| * ActivityInfo.configChanges} will have the |
| * {@link android.content.pm.ActivityInfo#CONFIG_SCREEN_SIZE} and |
| * {@link android.content.pm.ActivityInfo#CONFIG_SMALLEST_SCREEN_SIZE} |
| * bits set; these need to be cleared for older applications because |
| * some developers have done absolute comparisons against this value |
| * instead of correctly masking the bits they are interested in. |
| * </ul> |
| */ |
| public static final int HONEYCOMB_MR2 = 13; |
| |
| /** |
| * I. |
| * |
| * <p>Released publicly as Android 4.0 in October 2011. |
| * <p>Applications targeting this or a later release will get these |
| * new changes in behavior:</p> |
| * <ul> |
| * <li> For devices without a dedicated menu key, the software compatibility |
| * menu key will not be shown even on phones. By targeting Ice Cream Sandwich |
| * or later, your UI must always have its own menu UI affordance if needed, |
| * on both tablets and phones. The ActionBar will take care of this for you. |
| * <li> 2d drawing hardware acceleration is now turned on by default. |
| * You can use |
| * {@link android.R.attr#hardwareAccelerated android:hardwareAccelerated} |
| * to turn it off if needed, although this is strongly discouraged since |
| * it will result in poor performance on larger screen devices. |
| * <li> The default theme for applications is now the "device default" theme: |
| * {@link android.R.style#Theme_DeviceDefault}. This may be the |
| * holo dark theme or a different dark theme defined by the specific device. |
| * The {@link android.R.style#Theme_Holo} family must not be modified |
| * for a device to be considered compatible. Applications that explicitly |
| * request a theme from the Holo family will be guaranteed that these themes |
| * will not change character within the same platform version. Applications |
| * that wish to blend in with the device should use a theme from the |
| * {@link android.R.style#Theme_DeviceDefault} family. |
| * <li> Managed cursors can now throw an exception if you directly close |
| * the cursor yourself without stopping the management of it; previously failures |
| * would be silently ignored. |
| * <li> The fadingEdge attribute on views will be ignored (fading edges is no |
| * longer a standard part of the UI). A new requiresFadingEdge attribute allows |
| * applications to still force fading edges on for special cases. |
| * <li> {@link android.content.Context#bindService Context.bindService()} |
| * will not automatically add in {@link android.content.Context#BIND_WAIVE_PRIORITY}. |
| * <li> App Widgets will have standard padding automatically added around |
| * them, rather than relying on the padding being baked into the widget itself. |
| * <li> An exception will be thrown if you try to change the type of a |
| * window after it has been added to the window manager. Previously this |
| * would result in random incorrect behavior. |
| * <li> {@link android.view.animation.AnimationSet} will parse out |
| * the duration, fillBefore, fillAfter, repeatMode, and startOffset |
| * XML attributes that are defined. |
| * <li> {@link android.app.ActionBar#setHomeButtonEnabled |
| * ActionBar.setHomeButtonEnabled()} is false by default. |
| * </ul> |
| */ |
| public static final int ICE_CREAM_SANDWICH = 14; |
| |
| /** |
| * I MR1. |
| * |
| * <p>Released publicly as Android 4.03 in December 2011. |
| */ |
| public static final int ICE_CREAM_SANDWICH_MR1 = 15; |
| |
| /** |
| * J. |
| * |
| * <p>Released publicly as Android 4.1 in July 2012. |
| * <p>Applications targeting this or a later release will get these |
| * new changes in behavior:</p> |
| * <ul> |
| * <li> You must explicitly request the {@link android.Manifest.permission#READ_CALL_LOG} |
| * and/or {@link android.Manifest.permission#WRITE_CALL_LOG} permissions; |
| * access to the call log is no longer implicitly provided through |
| * {@link android.Manifest.permission#READ_CONTACTS} and |
| * {@link android.Manifest.permission#WRITE_CONTACTS}. |
| * <li> {@link android.widget.RemoteViews} will throw an exception if |
| * setting an onClick handler for views being generated by a |
| * {@link android.widget.RemoteViewsService} for a collection container; |
| * previously this just resulted in a warning log message. |
| * <li> New {@link android.app.ActionBar} policy for embedded tabs: |
| * embedded tabs are now always stacked in the action bar when in portrait |
| * mode, regardless of the size of the screen. |
| * <li> {@link android.webkit.WebSettings#setAllowFileAccessFromFileURLs(boolean) |
| * WebSettings.setAllowFileAccessFromFileURLs} and |
| * {@link android.webkit.WebSettings#setAllowUniversalAccessFromFileURLs(boolean) |
| * WebSettings.setAllowUniversalAccessFromFileURLs} default to false. |
| * <li> Calls to {@link android.content.pm.PackageManager#setComponentEnabledSetting |
| * PackageManager.setComponentEnabledSetting} will now throw an |
| * IllegalArgumentException if the given component class name does not |
| * exist in the application's manifest. |
| * <li> {@code NfcAdapter.setNdefPushMessage}, |
| * {@code NfcAdapter.setNdefPushMessageCallback} and |
| * {@code NfcAdapter.setOnNdefPushCompleteCallback} will throw |
| * IllegalStateException if called after the Activity has been destroyed. |
| * <li> Accessibility services must require the new |
| * {@link android.Manifest.permission#BIND_ACCESSIBILITY_SERVICE} permission or |
| * they will not be available for use. |
| * <li> {@link android.accessibilityservice.AccessibilityServiceInfo#FLAG_INCLUDE_NOT_IMPORTANT_VIEWS |
| * AccessibilityServiceInfo.FLAG_INCLUDE_NOT_IMPORTANT_VIEWS} must be set |
| * for unimportant views to be included in queries. |
| * </ul> |
| */ |
| public static final int JELLY_BEAN = 16; |
| |
| /** |
| * J MR1. |
| * |
| * <p>Released publicly as Android 4.2 in November 2012. |
| * <p>Applications targeting this or a later release will get these |
| * new changes in behavior:</p> |
| * <ul> |
| * <li>Content Providers: The default value of {@code android:exported} is now |
| * {@code false}. See |
| * <a href="{@docRoot}guide/topics/manifest/provider-element.html#exported"> |
| * the android:exported section</a> in the provider documentation for more details.</li> |
| * <li>{@link android.view.View#getLayoutDirection() View.getLayoutDirection()} |
| * can return different values than {@link android.view.View#LAYOUT_DIRECTION_LTR} |
| * based on the locale etc. |
| * <li> {@link android.webkit.WebView#addJavascriptInterface(Object, String) |
| * WebView.addJavascriptInterface} requires explicit annotations on methods |
| * for them to be accessible from Javascript. |
| * </ul> |
| */ |
| public static final int JELLY_BEAN_MR1 = 17; |
| |
| /** |
| * J MR2. |
| * |
| * <p>Released publicly as Android 4.3 in July 2013. |
| */ |
| public static final int JELLY_BEAN_MR2 = 18; |
| |
| /** |
| * K. |
| * |
| * <p>Released publicly as Android 4.4 in October 2013. |
| * <p>Applications targeting this or a later release will get these |
| * new changes in behavior. For more information about this release, see the |
| * <a href="/about/versions/kitkat/">Android KitKat overview</a>.</p> |
| * <ul> |
| * <li> The default result of |
| * {@link android.preference.PreferenceActivity#isValidFragment(String) |
| * PreferenceActivity.isValueFragment} becomes false instead of true.</li> |
| * <li> In {@link android.webkit.WebView}, apps targeting earlier versions will have |
| * JS URLs evaluated directly and any result of the evaluation will not replace |
| * the current page content. Apps targetting KITKAT or later that load a JS URL will |
| * have the result of that URL replace the content of the current page</li> |
| * <li> {@link android.app.AlarmManager#set AlarmManager.set} becomes interpreted as |
| * an inexact value, to give the system more flexibility in scheduling alarms.</li> |
| * <li> {@link android.content.Context#getSharedPreferences(String, int) |
| * Context.getSharedPreferences} no longer allows a null name.</li> |
| * <li> {@link android.widget.RelativeLayout} changes to compute wrapped content |
| * margins correctly.</li> |
| * <li> {@link android.app.ActionBar}'s window content overlay is allowed to be |
| * drawn.</li> |
| * <li>The {@link android.Manifest.permission#READ_EXTERNAL_STORAGE} |
| * permission is now always enforced.</li> |
| * <li>Access to package-specific external storage directories belonging |
| * to the calling app no longer requires the |
| * {@link android.Manifest.permission#READ_EXTERNAL_STORAGE} or |
| * {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} |
| * permissions.</li> |
| * </ul> |
| */ |
| public static final int KITKAT = 19; |
| |
| /** |
| * K for watches. |
| * |
| * <p>Released publicly as Android 4.4W in June 2014. |
| * <p>Applications targeting this or a later release will get these |
| * new changes in behavior:</p> |
| * <ul> |
| * <li>{@link android.app.AlertDialog} might not have a default background if the theme does |
| * not specify one.</li> |
| * </ul> |
| */ |
| public static final int KITKAT_WATCH = 20; |
| |
| /** |
| * Temporary until we completely switch to {@link #LOLLIPOP}. |
| * @hide |
| */ |
| public static final int L = 21; |
| |
| /** |
| * L. |
| * |
| * <p>Released publicly as Android 5.0 in November 2014. |
| * <p>Applications targeting this or a later release will get these |
| * new changes in behavior. For more information about this release, see the |
| * <a href="/about/versions/lollipop/">Android Lollipop overview</a>.</p> |
| * <ul> |
| * <li> {@link android.content.Context#bindService Context.bindService} now |
| * requires an explicit Intent, and will throw an exception if given an implicit |
| * Intent.</li> |
| * <li> {@link android.app.Notification.Builder Notification.Builder} will |
| * not have the colors of their various notification elements adjusted to better |
| * match the new material design look.</li> |
| * <li> {@link android.os.Message} will validate that a message is not currently |
| * in use when it is recycled.</li> |
| * <li> Hardware accelerated drawing in windows will be enabled automatically |
| * in most places.</li> |
| * <li> {@link android.widget.Spinner} throws an exception if attaching an |
| * adapter with more than one item type.</li> |
| * <li> If the app is a launcher, the launcher will be available to the user |
| * even when they are using corporate profiles (which requires that the app |
| * use {@link android.content.pm.LauncherApps} to correctly populate its |
| * apps UI).</li> |
| * <li> Calling {@link android.app.Service#stopForeground Service.stopForeground} |
| * with removeNotification false will modify the still posted notification so that |
| * it is no longer forced to be ongoing.</li> |
| * <li> A {@link android.service.dreams.DreamService} must require the |
| * {@link android.Manifest.permission#BIND_DREAM_SERVICE} permission to be usable.</li> |
| * </ul> |
| */ |
| public static final int LOLLIPOP = 21; |
| |
| /** |
| * L MR1. |
| * |
| * <p>Released publicly as Android 5.1 in March 2015. |
| * <p>For more information about this release, see the |
| * <a href="/about/versions/android-5.1">Android 5.1 APIs</a>. |
| */ |
| public static final int LOLLIPOP_MR1 = 22; |
| |
| /** |
| * M. |
| * |
| * <p>Released publicly as Android 6.0 in October 2015. |
| * <p>Applications targeting this or a later release will get these |
| * new changes in behavior. For more information about this release, see the |
| * <a href="/about/versions/marshmallow/">Android 6.0 Marshmallow overview</a>.</p> |
| * <ul> |
| * <li> Runtime permissions. Dangerous permissions are no longer granted at |
| * install time, but must be requested by the application at runtime through |
| * {@link android.app.Activity#requestPermissions}.</li> |
| * <li> Bluetooth and Wi-Fi scanning now requires holding the location permission.</li> |
| * <li> {@link android.app.AlarmManager#setTimeZone AlarmManager.setTimeZone} will fail if |
| * the given timezone is non-Olson.</li> |
| * <li> Activity transitions will only return shared |
| * elements mapped in the returned view hierarchy back to the calling activity.</li> |
| * <li> {@link android.view.View} allows a number of behaviors that may break |
| * existing apps: Canvas throws an exception if restore() is called too many times, |
| * widgets may return a hint size when returning UNSPECIFIED measure specs, and it |
| * will respect the attributes {@link android.R.attr#foreground}, |
| * {@link android.R.attr#foregroundGravity}, {@link android.R.attr#foregroundTint}, and |
| * {@link android.R.attr#foregroundTintMode}.</li> |
| * <li> {@link android.view.MotionEvent#getButtonState MotionEvent.getButtonState} |
| * will no longer report {@link android.view.MotionEvent#BUTTON_PRIMARY} |
| * and {@link android.view.MotionEvent#BUTTON_SECONDARY} as synonyms for |
| * {@link android.view.MotionEvent#BUTTON_STYLUS_PRIMARY} and |
| * {@link android.view.MotionEvent#BUTTON_STYLUS_SECONDARY}.</li> |
| * <li> {@link android.widget.ScrollView} now respects the layout param margins |
| * when measuring.</li> |
| * </ul> |
| */ |
| public static final int M = 23; |
| |
| /** |
| * N. |
| * |
| * <p>Released publicly as Android 7.0 in August 2016. |
| * <p>Applications targeting this or a later release will get these |
| * new changes in behavior. For more information about this release, see |
| * the <a href="/about/versions/nougat/">Android Nougat overview</a>.</p> |
| * <ul> |
| * <li> {@link android.app.DownloadManager.Request#setAllowedNetworkTypes |
| * DownloadManager.Request.setAllowedNetworkTypes} |
| * will disable "allow over metered" when specifying only |
| * {@link android.app.DownloadManager.Request#NETWORK_WIFI}.</li> |
| * <li> {@link android.app.DownloadManager} no longer allows access to raw |
| * file paths.</li> |
| * <li> {@link android.app.Notification.Builder#setShowWhen |
| * Notification.Builder.setShowWhen} |
| * must be called explicitly to have the time shown, and various other changes in |
| * {@link android.app.Notification.Builder Notification.Builder} to how notifications |
| * are shown.</li> |
| * <li>{@link android.content.Context#MODE_WORLD_READABLE} and |
| * {@link android.content.Context#MODE_WORLD_WRITEABLE} are no longer supported.</li> |
| * <li>{@link android.os.FileUriExposedException} will be thrown to applications.</li> |
| * <li>Applications will see global drag and drops as per |
| * {@link android.view.View#DRAG_FLAG_GLOBAL}.</li> |
| * <li>{@link android.webkit.WebView#evaluateJavascript WebView.evaluateJavascript} |
| * will not persist state from an empty WebView.</li> |
| * <li>{@link android.animation.AnimatorSet} will not ignore calls to end() before |
| * start().</li> |
| * <li>{@link android.app.AlarmManager#cancel(android.app.PendingIntent) |
| * AlarmManager.cancel} will throw a NullPointerException if given a null operation.</li> |
| * <li>{@link android.app.FragmentManager} will ensure fragments have been created |
| * before being placed on the back stack.</li> |
| * <li>{@link android.app.FragmentManager} restores fragments in |
| * {@link android.app.Fragment#onCreate Fragment.onCreate} rather than after the |
| * method returns.</li> |
| * <li>{@link android.R.attr#resizeableActivity} defaults to true.</li> |
| * <li>{@link android.graphics.drawable.AnimatedVectorDrawable} throws exceptions when |
| * opening invalid VectorDrawable animations.</li> |
| * <li>{@link android.view.ViewGroup.MarginLayoutParams} will no longer be dropped |
| * when converting between some types of layout params (such as |
| * {@link android.widget.LinearLayout.LayoutParams LinearLayout.LayoutParams} to |
| * {@link android.widget.RelativeLayout.LayoutParams RelativeLayout.LayoutParams}).</li> |
| * <li>Your application processes will not be killed when the device density changes.</li> |
| * <li>Drag and drop. After a view receives the |
| * {@link android.view.DragEvent#ACTION_DRAG_ENTERED} event, when the drag shadow moves into |
| * a descendant view that can accept the data, the view receives the |
| * {@link android.view.DragEvent#ACTION_DRAG_EXITED} event and won’t receive |
| * {@link android.view.DragEvent#ACTION_DRAG_LOCATION} and |
| * {@link android.view.DragEvent#ACTION_DROP} events while the drag shadow is within that |
| * descendant view, even if the descendant view returns <code>false</code> from its handler |
| * for these events.</li> |
| * </ul> |
| */ |
| public static final int N = 24; |
| |
| /** |
| * N MR1. |
| * |
| * <p>Released publicly as Android 7.1 in October 2016. |
| * <p>For more information about this release, see |
| * <a href="/about/versions/nougat/android-7.1">Android 7.1 for |
| * Developers</a>. |
| */ |
| public static final int N_MR1 = 25; |
| |
| /** |
| * O. |
| * |
| * <p>Released publicly as Android 8.0 in August 2017. |
| * <p>Applications targeting this or a later release will get these |
| * new changes in behavior. For more information about this release, see |
| * the <a href="/about/versions/oreo/">Android Oreo overview</a>.</p> |
| * <ul> |
| * <li><a href="{@docRoot}about/versions/oreo/background.html">Background execution limits</a> |
| * are applied to the application.</li> |
| * <li>The behavior of AccountManager's |
| * {@link android.accounts.AccountManager#getAccountsByType}, |
| * {@link android.accounts.AccountManager#getAccountsByTypeAndFeatures}, and |
| * {@link android.accounts.AccountManager#hasFeatures} has changed as documented there.</li> |
| * <li>{@link android.app.ActivityManager.RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE_PRE_26} |
| * is now returned as |
| * {@link android.app.ActivityManager.RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE}.</li> |
| * <li>The {@link android.app.NotificationManager} now requires the use of notification |
| * channels.</li> |
| * <li>Changes to the strict mode that are set in |
| * {@link Application#onCreate Application.onCreate} will no longer be clobbered after |
| * that function returns.</li> |
| * <li>A shared library apk with native code will have that native code included in |
| * the library path of its clients.</li> |
| * <li>{@link android.content.Context#getSharedPreferences Context.getSharedPreferences} |
| * in credential encrypted storage will throw an exception before the user is unlocked.</li> |
| * <li>Attempting to retrieve a {@link Context#FINGERPRINT_SERVICE} on a device that |
| * does not support that feature will now throw a runtime exception.</li> |
| * <li>{@link android.app.Fragment} will stop any active view animations when |
| * the fragment is stopped.</li> |
| * <li>Some compatibility code in Resources that attempts to use the default Theme |
| * the app may be using will be turned off, requiring the app to explicitly request |
| * resources with the right theme.</li> |
| * <li>{@link android.content.ContentResolver#notifyChange ContentResolver.notifyChange} and |
| * {@link android.content.ContentResolver#registerContentObserver |
| * ContentResolver.registerContentObserver} |
| * will throw a SecurityException if the caller does not have permission to access |
| * the provider (or the provider doesn't exit); otherwise the call will be silently |
| * ignored.</li> |
| * <li>{@link android.hardware.camera2.CameraDevice#createCaptureRequest |
| * CameraDevice.createCaptureRequest} will enable |
| * {@link android.hardware.camera2.CaptureRequest#CONTROL_ENABLE_ZSL} by default for |
| * still image capture.</li> |
| * <li>WallpaperManager's {@link android.app.WallpaperManager#getWallpaperFile}, |
| * {@link android.app.WallpaperManager#getDrawable}, |
| * {@link android.app.WallpaperManager#getFastDrawable}, |
| * {@link android.app.WallpaperManager#peekDrawable}, and |
| * {@link android.app.WallpaperManager#peekFastDrawable} will throw an exception |
| * if you can not access the wallpaper.</li> |
| * <li>The behavior of |
| * {@link android.hardware.usb.UsbDeviceConnection#requestWait UsbDeviceConnection.requestWait} |
| * is modified as per the documentation there.</li> |
| * <li>{@link StrictMode.VmPolicy.Builder#detectAll StrictMode.VmPolicy.Builder.detectAll} |
| * will also enable {@link StrictMode.VmPolicy.Builder#detectContentUriWithoutPermission} |
| * and {@link StrictMode.VmPolicy.Builder#detectUntaggedSockets}.</li> |
| * <li>{@link StrictMode.ThreadPolicy.Builder#detectAll StrictMode.ThreadPolicy.Builder.detectAll} |
| * will also enable {@link StrictMode.ThreadPolicy.Builder#detectUnbufferedIo}.</li> |
| * <li>{@link android.provider.DocumentsContract}'s various methods will throw failure |
| * exceptions back to the caller instead of returning null. |
| * <li>{@link View#hasFocusable() View.hasFocusable} now includes auto-focusable views.</li> |
| * <li>{@link android.view.SurfaceView} will no longer always change the underlying |
| * Surface object when something about it changes; apps need to look at the current |
| * state of the object to determine which things they are interested in have changed.</li> |
| * <li>{@link android.view.WindowManager.LayoutParams#TYPE_APPLICATION_OVERLAY} must be |
| * used for overlay windows, other system overlay window types are not allowed.</li> |
| * <li>{@link android.view.ViewTreeObserver#addOnDrawListener |
| * ViewTreeObserver.addOnDrawListener} will throw an exception if called from within |
| * onDraw.</li> |
| * <li>{@link android.graphics.Canvas#setBitmap Canvas.setBitmap} will no longer preserve |
| * the current matrix and clip stack of the canvas.</li> |
| * <li>{@link android.widget.ListPopupWindow#setHeight ListPopupWindow.setHeight} |
| * will throw an exception if a negative height is supplied.</li> |
| * <li>{@link android.widget.TextView} will use internationalized input for numbers, |
| * dates, and times.</li> |
| * <li>{@link android.widget.Toast} must be used for showing toast windows; the toast |
| * window type can not be directly used.</li> |
| * <li>{@link android.net.wifi.WifiManager#getConnectionInfo WifiManager.getConnectionInfo} |
| * requires that the caller hold the location permission to return BSSID/SSID</li> |
| * <li>{@link android.net.wifi.p2p.WifiP2pManager#requestPeers WifiP2pManager.requestPeers} |
| * requires the caller hold the location permission.</li> |
| * <li>{@link android.R.attr#maxAspectRatio} defaults to 0, meaning there is no restriction |
| * on the app's maximum aspect ratio (so it can be stretched to fill larger screens).</li> |
| * <li>{@link android.R.attr#focusable} defaults to a new state ({@code auto}) where it will |
| * inherit the value of {@link android.R.attr#clickable} unless explicitly overridden.</li> |
| * <li>A default theme-appropriate focus-state highlight will be supplied to all Views |
| * which don't provide a focus-state drawable themselves. This can be disabled by setting |
| * {@link android.R.attr#defaultFocusHighlightEnabled} to false.</li> |
| * </ul> |
| */ |
| public static final int O = 26; |
| |
| /** |
| * O MR1. |
| * |
| * <p>Released publicly as Android 8.1 in December 2017. |
| * <p>Applications targeting this or a later release will get these |
| * new changes in behavior. For more information about this release, see |
| * <a href="/about/versions/oreo/android-8.1">Android 8.1 features and |
| * APIs</a>.</p> |
| * <ul> |
| * <li>Apps exporting and linking to apk shared libraries must explicitly |
| * enumerate all signing certificates in a consistent order.</li> |
| * <li>{@link android.R.attr#screenOrientation} can not be used to request a fixed |
| * orientation if the associated activity is not fullscreen and opaque.</li> |
| * </ul> |
| * |
| */ |
| public static final int O_MR1 = 27; |
| |
| /** |
| * P. |
| * |
| * <p>Released publicly as Android 9 in August 2018. |
| * <p>Applications targeting this or a later release will get these |
| * new changes in behavior. For more information about this release, see the |
| * <a href="/about/versions/pie/">Android 9 Pie overview</a>.</p> |
| * <ul> |
| * <li>{@link android.app.Service#startForeground Service.startForeground} requires |
| * that apps hold the permission |
| * {@link android.Manifest.permission#FOREGROUND_SERVICE}.</li> |
| * <li>{@link android.widget.LinearLayout} will always remeasure weighted children, |
| * even if there is no excess space.</li> |
| * </ul> |
| * |
| */ |
| public static final int P = 28; |
| |
| /** |
| * Q. |
| * |
| * <p>Released publicly as Android 10 in September 2019. |
| * <p>Applications targeting this or a later release will get these new changes in behavior. |
| * For more information about this release, see the |
| * <a href="/about/versions/10">Android 10 overview</a>.</p> |
| * <ul> |
| * <li><a href="/about/versions/10/behavior-changes-all">Behavior changes: all apps</a></li> |
| * <li><a href="/about/versions/10/behavior-changes-10">Behavior changes: apps targeting API |
| * 29+</a></li> |
| * </ul> |
| * |
| */ |
| public static final int Q = 29; |
| |
| /** |
| * R. |
| * |
| * <p>Released publicly as Android 11 in September 2020. |
| * <p>Applications targeting this or a later release will get these new changes in behavior. |
| * For more information about this release, see the |
| * <a href="/about/versions/11">Android 11 overview</a>.</p> |
| * <ul> |
| * <li><a href="/about/versions/11/behavior-changes-all">Behavior changes: all apps</a></li> |
| * <li><a href="/about/versions/11/behavior-changes-11">Behavior changes: Apps targeting |
| * Android 11</a></li> |
| * <li><a href="/about/versions/11/non-sdk-11">Updates to non-SDK interface restrictions |
| * in Android 11</a></li> |
| * </ul> |
| * |
| */ |
| public static final int R = 30; |
| |
| /** |
| * S. |
| */ |
| public static final int S = 31; |
| |
| /** |
| * S V2. |
| * |
| * Once more unto the breach, dear friends, once more. |
| */ |
| public static final int S_V2 = 32; |
| |
| /** |
| * Tiramisu. |
| */ |
| public static final int TIRAMISU = 33; |
| |
| /** |
| * Upside Down Cake. |
| */ |
| public static final int UPSIDE_DOWN_CAKE = 34; |
| |
| /** |
| * Vanilla Ice Cream. |
| */ |
| public static final int VANILLA_ICE_CREAM = CUR_DEVELOPMENT; |
| } |
| |
| /** The type of build, like "user" or "eng". */ |
| public static final String TYPE = getString("ro.build.type"); |
| |
| /** Comma-separated tags describing the build, like "unsigned,debug". */ |
| public static final String TAGS = getString("ro.build.tags"); |
| |
| /** A string that uniquely identifies this build. Do not attempt to parse this value. */ |
| public static final String FINGERPRINT = deriveFingerprint(); |
| |
| /** |
| * Some devices split the fingerprint components between multiple |
| * partitions, so we might derive the fingerprint at runtime. |
| */ |
| private static String deriveFingerprint() { |
| String finger = SystemProperties.get("ro.build.fingerprint"); |
| if (TextUtils.isEmpty(finger)) { |
| finger = getString("ro.product.brand") + '/' + |
| getString("ro.product.name") + '/' + |
| getString("ro.product.device") + ':' + |
| getString("ro.build.version.release") + '/' + |
| getString("ro.build.id") + '/' + |
| getString("ro.build.version.incremental") + ':' + |
| getString("ro.build.type") + '/' + |
| getString("ro.build.tags"); |
| } |
| return finger; |
| } |
| |
| /** |
| * Ensure that raw fingerprint system property is defined. If it was derived |
| * dynamically by {@link #deriveFingerprint()} this is where we push the |
| * derived value into the property service. |
| * |
| * @hide |
| */ |
| public static void ensureFingerprintProperty() { |
| if (TextUtils.isEmpty(SystemProperties.get("ro.build.fingerprint"))) { |
| try { |
| SystemProperties.set("ro.build.fingerprint", FINGERPRINT); |
| } catch (IllegalArgumentException e) { |
| Slog.e(TAG, "Failed to set fingerprint property", e); |
| } |
| } |
| } |
| |
| /** |
| * A multiplier for various timeouts on the system. |
| * |
| * The intent is that products targeting software emulators that are orders of magnitude slower |
| * than real hardware may set this to a large number. On real devices and hardware-accelerated |
| * virtualized devices this should not be set. |
| * |
| * @hide |
| */ |
| public static final int HW_TIMEOUT_MULTIPLIER = |
| SystemProperties.getInt("ro.hw_timeout_multiplier", 1); |
| |
| /** |
| * True if Treble is enabled and required for this device. |
| * |
| * @hide |
| */ |
| public static final boolean IS_TREBLE_ENABLED = |
| SystemProperties.getBoolean("ro.treble.enabled", false); |
| |
| /** |
| * Verifies the current flash of the device is consistent with what |
| * was expected at build time. |
| * |
| * Treble devices will verify the Vendor Interface (VINTF). A device |
| * launched without Treble: |
| * |
| * 1) Checks that device fingerprint is defined and that it matches across |
| * various partitions. |
| * 2) Verifies radio and bootloader partitions are those expected in the build. |
| * |
| * @hide |
| */ |
| public static boolean isBuildConsistent() { |
| // Don't care on eng builds. Incremental build may trigger false negative. |
| if (IS_ENG) return true; |
| |
| if (IS_TREBLE_ENABLED) { |
| int result = VintfObject.verifyBuildAtBoot(); |
| |
| if (result != 0) { |
| Slog.e(TAG, "Vendor interface is incompatible, error=" |
| + String.valueOf(result)); |
| } |
| |
| return result == 0; |
| } |
| |
| final String system = SystemProperties.get("ro.system.build.fingerprint"); |
| final String vendor = SystemProperties.get("ro.vendor.build.fingerprint"); |
| final String bootimage = SystemProperties.get("ro.bootimage.build.fingerprint"); |
| final String requiredBootloader = SystemProperties.get("ro.build.expect.bootloader"); |
| final String currentBootloader = SystemProperties.get("ro.bootloader"); |
| final String requiredRadio = SystemProperties.get("ro.build.expect.baseband"); |
| final String currentRadio = joinListOrElse( |
| TelephonyProperties.baseband_version(), ""); |
| |
| if (TextUtils.isEmpty(system)) { |
| Slog.e(TAG, "Required ro.system.build.fingerprint is empty!"); |
| return false; |
| } |
| |
| if (!TextUtils.isEmpty(vendor)) { |
| if (!Objects.equals(system, vendor)) { |
| Slog.e(TAG, "Mismatched fingerprints; system reported " + system |
| + " but vendor reported " + vendor); |
| return false; |
| } |
| } |
| |
| /* TODO: Figure out issue with checks failing |
| if (!TextUtils.isEmpty(bootimage)) { |
| if (!Objects.equals(system, bootimage)) { |
| Slog.e(TAG, "Mismatched fingerprints; system reported " + system |
| + " but bootimage reported " + bootimage); |
| return false; |
| } |
| } |
| |
| if (!TextUtils.isEmpty(requiredBootloader)) { |
| if (!Objects.equals(currentBootloader, requiredBootloader)) { |
| Slog.e(TAG, "Mismatched bootloader version: build requires " + requiredBootloader |
| + " but runtime reports " + currentBootloader); |
| return false; |
| } |
| } |
| |
| if (!TextUtils.isEmpty(requiredRadio)) { |
| if (!Objects.equals(currentRadio, requiredRadio)) { |
| Slog.e(TAG, "Mismatched radio version: build requires " + requiredRadio |
| + " but runtime reports " + currentRadio); |
| return false; |
| } |
| } |
| */ |
| |
| return true; |
| } |
| |
| /** Build information for a particular device partition. */ |
| public static class Partition { |
| /** The name identifying the system partition. */ |
| public static final String PARTITION_NAME_SYSTEM = "system"; |
| /** @hide */ |
| public static final String PARTITION_NAME_BOOTIMAGE = "bootimage"; |
| /** @hide */ |
| public static final String PARTITION_NAME_ODM = "odm"; |
| /** @hide */ |
| public static final String PARTITION_NAME_OEM = "oem"; |
| /** @hide */ |
| public static final String PARTITION_NAME_PRODUCT = "product"; |
| /** @hide */ |
| public static final String PARTITION_NAME_SYSTEM_EXT = "system_ext"; |
| /** @hide */ |
| public static final String PARTITION_NAME_VENDOR = "vendor"; |
| |
| private final String mName; |
| private final String mFingerprint; |
| private final long mTimeMs; |
| |
| private Partition(String name, String fingerprint, long timeMs) { |
| mName = name; |
| mFingerprint = fingerprint; |
| mTimeMs = timeMs; |
| } |
| |
| /** The name of this partition, e.g. "system", or "vendor" */ |
| @NonNull |
| public String getName() { |
| return mName; |
| } |
| |
| /** The build fingerprint of this partition, see {@link Build#FINGERPRINT}. */ |
| @NonNull |
| public String getFingerprint() { |
| return mFingerprint; |
| } |
| |
| /** The time (ms since epoch), at which this partition was built, see {@link Build#TIME}. */ |
| public long getBuildTimeMillis() { |
| return mTimeMs; |
| } |
| |
| @Override |
| public boolean equals(@Nullable Object o) { |
| if (!(o instanceof Partition)) { |
| return false; |
| } |
| Partition op = (Partition) o; |
| return mName.equals(op.mName) |
| && mFingerprint.equals(op.mFingerprint) |
| && mTimeMs == op.mTimeMs; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(mName, mFingerprint, mTimeMs); |
| } |
| } |
| |
| /** |
| * Get build information about partitions that have a separate fingerprint defined. |
| * |
| * The list includes partitions that are suitable candidates for over-the-air updates. This is |
| * not an exhaustive list of partitions on the device. |
| */ |
| @NonNull |
| public static List<Partition> getFingerprintedPartitions() { |
| ArrayList<Partition> partitions = new ArrayList(); |
| |
| String[] names = new String[] { |
| Partition.PARTITION_NAME_BOOTIMAGE, |
| Partition.PARTITION_NAME_ODM, |
| Partition.PARTITION_NAME_PRODUCT, |
| Partition.PARTITION_NAME_SYSTEM_EXT, |
| Partition.PARTITION_NAME_SYSTEM, |
| Partition.PARTITION_NAME_VENDOR |
| }; |
| for (String name : names) { |
| String fingerprint = SystemProperties.get("ro." + name + ".build.fingerprint"); |
| if (TextUtils.isEmpty(fingerprint)) { |
| continue; |
| } |
| long time = getLong("ro." + name + ".build.date.utc") * 1000; |
| partitions.add(new Partition(name, fingerprint, time)); |
| } |
| |
| return partitions; |
| } |
| |
| // The following properties only make sense for internal engineering builds. |
| |
| /** The time at which the build was produced, given in milliseconds since the UNIX epoch. */ |
| public static final long TIME = getLong("ro.build.date.utc") * 1000; |
| public static final String USER = getString("ro.build.user"); |
| public static final String HOST = getString("ro.build.host"); |
| |
| /** |
| * Returns true if the device is running a debuggable build such as "userdebug" or "eng". |
| * |
| * Debuggable builds allow users to gain root access via local shell, attach debuggers to any |
| * application regardless of whether they have the "debuggable" attribute set, or downgrade |
| * selinux into "permissive" mode in particular. |
| * @hide |
| */ |
| @UnsupportedAppUsage |
| public static final boolean IS_DEBUGGABLE = |
| SystemProperties.getInt("ro.debuggable", 0) == 1; |
| |
| /** |
| * Returns true if the device is running a debuggable build such as "userdebug" or "eng". |
| * |
| * Debuggable builds allow users to gain root access via local shell, attach debuggers to any |
| * application regardless of whether they have the "debuggable" attribute set, or downgrade |
| * selinux into "permissive" mode in particular. |
| * @hide |
| */ |
| @TestApi |
| @SystemApi(client = SystemApi.Client.MODULE_LIBRARIES) |
| public static boolean isDebuggable() { |
| return IS_DEBUGGABLE; |
| } |
| |
| /** {@hide} */ |
| public static final boolean IS_ENG = "eng".equals(TYPE); |
| /** {@hide} */ |
| public static final boolean IS_USERDEBUG = "userdebug".equals(TYPE); |
| /** {@hide} */ |
| public static final boolean IS_USER = "user".equals(TYPE); |
| |
| /** |
| * Whether this build is running on ARC, the Android Runtime for Chrome |
| * (https://chromium.googlesource.com/chromiumos/docs/+/master/containers_and_vms.md). |
| * Prior to R this was implemented as a container but from R this will be |
| * a VM. The name of the property remains ro.boot.conntainer as it is |
| * referenced in other projects. |
| * |
| * We should try to avoid checking this flag if possible to minimize |
| * unnecessarily diverging from non-container Android behavior. |
| * Checking this flag is acceptable when low-level resources being |
| * different, e.g. the availability of certain capabilities, access to |
| * system resources being restricted, and the fact that the host OS might |
| * handle some features for us. |
| * For higher-level behavior differences, other checks should be preferred. |
| * @hide |
| */ |
| public static final boolean IS_ARC = |
| SystemProperties.getBoolean("ro.boot.container", false); |
| |
| /** |
| * Specifies whether the permissions needed by a legacy app should be |
| * reviewed before any of its components can run. A legacy app is one |
| * with targetSdkVersion < 23, i.e apps using the old permission model. |
| * If review is not required, permissions are reviewed before the app |
| * is installed. |
| * |
| * @hide |
| * @removed |
| */ |
| @SystemApi |
| public static final boolean PERMISSIONS_REVIEW_REQUIRED = true; |
| |
| /** |
| * Returns the version string for the radio firmware. May return |
| * null (if, for instance, the radio is not currently on). |
| */ |
| public static String getRadioVersion() { |
| return joinListOrElse(TelephonyProperties.baseband_version(), null); |
| } |
| |
| @UnsupportedAppUsage |
| private static String getString(String property) { |
| return SystemProperties.get(property, UNKNOWN); |
| } |
| /** |
| * Return attestation specific proerties. |
| * @param property model, name, brand, device or manufacturer. |
| * @return property value or UNKNOWN |
| */ |
| private static String getVendorDeviceIdProperty(String property) { |
| String attestProp = getString( |
| TextUtils.formatSimple("ro.product.%s_for_attestation", property)); |
| return attestProp.equals(UNKNOWN) |
| ? getString(TextUtils.formatSimple("ro.product.vendor.%s", property)) : attestProp; |
| } |
| |
| private static String[] getStringList(String property, String separator) { |
| String value = SystemProperties.get(property); |
| if (value.isEmpty()) { |
| return new String[0]; |
| } else { |
| return value.split(separator); |
| } |
| } |
| |
| @UnsupportedAppUsage |
| private static long getLong(String property) { |
| try { |
| return Long.parseLong(SystemProperties.get(property)); |
| } catch (NumberFormatException e) { |
| return -1; |
| } |
| } |
| |
| private static <T> String joinListOrElse(List<T> list, String defaultValue) { |
| String ret = list.stream().map(elem -> elem == null ? "" : elem.toString()) |
| .collect(Collectors.joining(",")); |
| return ret.isEmpty() ? defaultValue : ret; |
| } |
| } |
