ResourcesManager: Return null on failure to create Resources (dc477a9e) · Commits · e / os / android_frameworks_base

core/java/android/app/ApplicationPackageManager.java

+5 −7

Original line number	Diff line number	Diff line
		@@ -1245,18 +1245,16 @@ public class ApplicationPackageManager extends PackageManager {
		return mContext.mMainThread.getSystemContext().getResources();
		}
		final boolean sameUid = (app.uid == Process.myUid());
		try {
		return mContext.mMainThread.getTopLevelResources(
		final Resources r = mContext.mMainThread.getTopLevelResources(
		sameUid ? app.sourceDir : app.publicSourceDir,
		sameUid ? app.splitSourceDirs : app.splitPublicSourceDirs,
		app.resourceDirs, app.sharedLibraryFiles, Display.DEFAULT_DISPLAY,
		mContext.mPackageInfo);
		} catch (Resources.NotFoundException cause) {
		final NameNotFoundException ex =
		new NameNotFoundException("Unable to open " + app.publicSourceDir);
		ex.initCause(cause);
		throw ex;
		if (r != null) {
		return r;
		}
		throw new NameNotFoundException("Unable to open " + app.publicSourceDir);

		}

		@Override

core/java/android/app/ResourcesManager.java

+37 −16

Original line number	Diff line number	Diff line
		@@ -242,7 +242,7 @@ public class ResourcesManager {
		* @return a new AssetManager.
		*/
		@VisibleForTesting
		protected @NonNull AssetManager createAssetManager(@NonNull final ResourcesKey key) {
		protected @Nullable AssetManager createAssetManager(@NonNull final ResourcesKey key) {
		AssetManager assets = new AssetManager();

		// resDir can be null if the 'android' package is creating a new Resources object.
		@@ -250,15 +250,16 @@ public class ResourcesManager {
		// already.
		if (key.mResDir != null) {
		if (assets.addAssetPath(key.mResDir) == 0) {
		throw new Resources.NotFoundException("failed to add asset path " + key.mResDir);
		Log.e(TAG, "failed to add asset path " + key.mResDir);
		return null;
		}
		}

		if (key.mSplitResDirs != null) {
		for (final String splitResDir : key.mSplitResDirs) {
		if (assets.addAssetPath(splitResDir) == 0) {
		throw new Resources.NotFoundException(
		"failed to add split asset path " + splitResDir);
		Log.e(TAG, "failed to add split asset path " + splitResDir);
		return null;
		}
		}
		}
		@@ -303,11 +304,15 @@ public class ResourcesManager {
		return config;
		}

		private @NonNull ResourcesImpl createResourcesImpl(@NonNull ResourcesKey key) {
		private @Nullable ResourcesImpl createResourcesImpl(@NonNull ResourcesKey key) {
		final DisplayAdjustments daj = new DisplayAdjustments(key.mOverrideConfiguration);
		daj.setCompatibilityInfo(key.mCompatInfo);

		final AssetManager assets = createAssetManager(key);
		if (assets == null) {
		return null;
		}

		final DisplayMetrics dm = getDisplayMetrics(key.mDisplayId, daj);
		final Configuration config = generateConfig(key, dm);
		final ResourcesImpl impl = new ResourcesImpl(assets, dm, config, daj);
		@@ -323,7 +328,7 @@ public class ResourcesManager {
		* @param key The key to match.
		* @return a ResourcesImpl if the key matches a cache entry, null otherwise.
		*/
		private ResourcesImpl findResourcesImplForKeyLocked(@NonNull ResourcesKey key) {
		private @Nullable ResourcesImpl findResourcesImplForKeyLocked(@NonNull ResourcesKey key) {
		WeakReference<ResourcesImpl> weakImplRef = mResourceImpls.get(key);
		ResourcesImpl impl = weakImplRef != null ? weakImplRef.get() : null;
		if (impl != null && impl.getAssets().isUpToDate()) {
		@@ -338,13 +343,15 @@ public class ResourcesManager {
		* @param key The key to match.
		* @return a ResourcesImpl object matching the key.
		*/
		private @NonNull ResourcesImpl findOrCreateResourcesImplForKeyLocked(
		private @Nullable ResourcesImpl findOrCreateResourcesImplForKeyLocked(
		@NonNull ResourcesKey key) {
		ResourcesImpl impl = findResourcesImplForKeyLocked(key);
		if (impl == null) {
		impl = createResourcesImpl(key);
		if (impl != null) {
		mResourceImpls.put(key, new WeakReference<>(impl));
		}
		}
		return impl;
		}

		@@ -352,7 +359,8 @@ public class ResourcesManager {
		* Find the ResourcesKey that this ResourcesImpl object is associated with.
		* @return the ResourcesKey or null if none was found.
		*/
		private ResourcesKey findKeyForResourceImplLocked(@NonNull ResourcesImpl resourceImpl) {
		private @Nullable ResourcesKey findKeyForResourceImplLocked(
		@NonNull ResourcesImpl resourceImpl) {
		final int refCount = mResourceImpls.size();
		for (int i = 0; i < refCount; i++) {
		WeakReference<ResourcesImpl> weakImplRef = mResourceImpls.valueAt(i);
		@@ -480,7 +488,7 @@ public class ResourcesManager {
		* {@link ClassLoader#getSystemClassLoader()} is used.
		* @return a Resources object from which to access resources.
		*/
		public @NonNull Resources createBaseActivityResources(@NonNull IBinder activityToken,
		public @Nullable Resources createBaseActivityResources(@NonNull IBinder activityToken,
		@Nullable String resDir,
		@Nullable String[] splitResDirs,
		@Nullable String[] overlayDirs,
		@@ -534,7 +542,7 @@ public class ResourcesManager {
		* {@link #applyConfigurationToResourcesLocked(Configuration, CompatibilityInfo)}
		* is called.
		*/
		private @NonNull Resources getOrCreateResources(@Nullable IBinder activityToken,
		private @Nullable Resources getOrCreateResources(@Nullable IBinder activityToken,
		@NonNull ResourcesKey key, @NonNull ClassLoader classLoader) {
		synchronized (this) {
		if (DEBUG) {
		@@ -589,6 +597,9 @@ public class ResourcesManager {

		// If we're here, we didn't find a suitable ResourcesImpl to use, so create one now.
		ResourcesImpl resourcesImpl = createResourcesImpl(key);
		if (resourcesImpl == null) {
		return null;
		}

		synchronized (this) {
		ResourcesImpl existingResourcesImpl = findResourcesImplForKeyLocked(key);
		@@ -642,7 +653,7 @@ public class ResourcesManager {
		* {@link ClassLoader#getSystemClassLoader()} is used.
		* @return a Resources object from which to access resources.
		*/
		public @NonNull Resources getResources(@Nullable IBinder activityToken,
		public @Nullable Resources getResources(@Nullable IBinder activityToken,
		@Nullable String resDir,
		@Nullable String[] splitResDirs,
		@Nullable String[] overlayDirs,
		@@ -765,10 +776,12 @@ public class ResourcesManager {
		ResourcesImpl resourcesImpl = findResourcesImplForKeyLocked(newKey);
		if (resourcesImpl == null) {
		resourcesImpl = createResourcesImpl(newKey);
		if (resourcesImpl != null) {
		mResourceImpls.put(newKey, new WeakReference<>(resourcesImpl));
		}
		}

		if (resourcesImpl != resources.getImpl()) {
		if (resourcesImpl != null && resourcesImpl != resources.getImpl()) {
		// Set the ResourcesImpl, updating it for all users of this Resources
		// object.
		resources.setImpl(resourcesImpl);
		@@ -910,7 +923,11 @@ public class ResourcesManager {
		if (r != null) {
		final ResourcesKey key = updatedResourceKeys.get(r.getImpl());
		if (key != null) {
		r.setImpl(findOrCreateResourcesImplForKeyLocked(key));
		final ResourcesImpl impl = findOrCreateResourcesImplForKeyLocked(key);
		if (impl == null) {
		throw new Resources.NotFoundException("failed to load " + libAsset);
		}
		r.setImpl(impl);
		}
		}
		}
		@@ -923,7 +940,11 @@ public class ResourcesManager {
		if (r != null) {
		final ResourcesKey key = updatedResourceKeys.get(r.getImpl());
		if (key != null) {
		r.setImpl(findOrCreateResourcesImplForKeyLocked(key));
		final ResourcesImpl impl = findOrCreateResourcesImplForKeyLocked(key);
		if (impl == null) {
		throw new Resources.NotFoundException("failed to load " + libAsset);
		}
		r.setImpl(impl);
		}
		}
		}