Cap the size for RemoteCollectionItemsAdapter (b908c01c) · Commits · e / os / android_frameworks_base

core/java/android/widget/RemoteViews.java

+107 −37

Original line number	Diff line number	Diff line
		@@ -1105,6 +1105,7 @@ public class RemoteViews implements Parcelable, Filter {
		SetRemoteCollectionItemListAdapterAction(Parcel parcel) {
		mViewId = parcel.readInt();
		mIntentId = parcel.readInt();
		mIsReplacedIntoAction = parcel.readBoolean();
		mServiceIntent = parcel.readTypedObject(Intent.CREATOR);
		mItems = mServiceIntent != null
		? null
		@@ -1128,6 +1129,7 @@ public class RemoteViews implements Parcelable, Filter {
		public void writeToParcel(Parcel dest, int flags) {
		dest.writeInt(mViewId);
		dest.writeInt(mIntentId);
		dest.writeBoolean(mIsReplacedIntoAction);
		dest.writeTypedObject(mServiceIntent, flags);
		if (mItems != null) {
		mItems.writeToParcel(dest, flags, /* attached= */ true);
		@@ -1208,6 +1210,19 @@ public class RemoteViews implements Parcelable, Filter {
		}
		}

		/**
		* The maximum size for RemoteViews with converted RemoteCollectionItemsAdapter.
		* When converting RemoteViewsAdapter to RemoteCollectionItemsAdapter, we want to put size
		* limits on each unique RemoteCollectionItems in order to not exceed the transaction size limit
		* for each parcel (typically 1 MB). We leave a certain ratio of the maximum size as a buffer
		* for missing calculations of certain parameters (e.g. writing a RemoteCollectionItems to the
		* parcel will write its Id array as well, but that is missing when writing itschild RemoteViews
		* directly to the parcel as we did in RemoteViewsService)
		*
		* @hide
		*/
		private static final int MAX_SINGLE_PARCEL_SIZE = (int) (1_000_000 * 0.8);

		/**
		* @hide
		*/
		@@ -1260,17 +1275,47 @@ public class RemoteViews implements Parcelable, Filter {
		return mUriToCollectionMapping.get(uri);
		}

		CompletableFuture<Void> collectAllIntentsNoComplete(@NonNull RemoteViews inViews) {
		CompletableFuture<Void> collectionFuture = CompletableFuture.completedFuture(null);
		public @NonNull CompletableFuture<Void> collectAllIntentsNoComplete(
		@NonNull RemoteViews inViews) {
		SparseArray<Intent> idToIntentMapping = new SparseArray<>();
		// Collect the number of uinque Intent (which is equal to the number of new connections
		// to make) for size allocation and exclude certain collections from being written to
		// the parcel to better estimate the space left for reallocation.
		collectAllIntentsInternal(inViews, idToIntentMapping);

		// Calculate the individual size here
		int numOfIntents = idToIntentMapping.size();
		if (numOfIntents == 0) {
		Log.e(LOG_TAG, "Possibly notifying updates for nonexistent view Id");
		return CompletableFuture.completedFuture(null);
		}

		Parcel sizeTestParcel = Parcel.obtain();
		// Write self RemoteViews to the parcel, which includes the actions/bitmaps/collection
		// cache to see how much space is left for the RemoteCollectionItems that are to be
		// updated.
		RemoteViews.this.writeToParcel(sizeTestParcel,
		/* flags= */ 0,
		/* intentsToIgnore= */ idToIntentMapping);
		int remainingSize = MAX_SINGLE_PARCEL_SIZE - sizeTestParcel.dataSize();
		sizeTestParcel.recycle();

		int individualSize = remainingSize < 0
		? 0
		: remainingSize / numOfIntents;

		return connectAllUniqueIntents(individualSize, idToIntentMapping);
		}

		private void collectAllIntentsInternal(@NonNull RemoteViews inViews,
		@NonNull SparseArray<Intent> idToIntentMapping) {
		if (inViews.hasSizedRemoteViews()) {
		for (RemoteViews remoteViews : inViews.mSizedRemoteViews) {
		collectionFuture = CompletableFuture.allOf(collectionFuture,
		collectAllIntentsNoComplete(remoteViews));
		collectAllIntentsInternal(remoteViews, idToIntentMapping);
		}
		} else if (inViews.hasLandscapeAndPortraitLayouts()) {
		collectionFuture = CompletableFuture.allOf(
		collectAllIntentsNoComplete(inViews.mLandscape),
		collectAllIntentsNoComplete(inViews.mPortrait));
		collectAllIntentsInternal(inViews.mLandscape, idToIntentMapping);
		collectAllIntentsInternal(inViews.mPortrait, idToIntentMapping);
		} else if (inViews.mActions != null) {
		for (Action action : inViews.mActions) {
		if (action instanceof SetRemoteCollectionItemListAdapterAction rca) {
		@@ -1280,13 +1325,16 @@ public class RemoteViews implements Parcelable, Filter {
		}

		if (rca.mIntentId != -1 && rca.mIsReplacedIntoAction) {
		final String uri = mIdToUriMapping.get(rca.mIntentId);
		collectionFuture = CompletableFuture.allOf(collectionFuture,
		getItemsFutureFromIntentWithTimeout(rca.mServiceIntent)
		.thenAccept(rc -> {
		rc.setHierarchyRootData(getHierarchyRootData());
		mUriToCollectionMapping.put(uri, rc);
		}));
		rca.mIsReplacedIntoAction = false;

		// Avoid redundant connections for the same intent. Also making sure
		// that the number of connections we are making is always equal to the
		// nmuber of unique intents that are being used for the updates.
		if (idToIntentMapping.contains(rca.mIntentId)) {
		continue;
		}

		idToIntentMapping.put(rca.mIntentId, rca.mServiceIntent);
		rca.mItems = null;
		continue;
		}
		@@ -1295,7 +1343,7 @@ public class RemoteViews implements Parcelable, Filter {
		// intents.
		if (rca.mServiceIntent != null) {
		final String uri = rca.mServiceIntent.toUri(0);
		int index = mIdToUriMapping.indexOfValue(uri);
		int index = mIdToUriMapping.indexOfValueByValue(uri);
		if (index == -1) {
		int newIntentId = mIdToUriMapping.size();
		rca.mIntentId = newIntentId;
		@@ -1305,32 +1353,41 @@ public class RemoteViews implements Parcelable, Filter {
		rca.mItems = null;
		continue;
		}
		collectionFuture = CompletableFuture.allOf(collectionFuture,
		getItemsFutureFromIntentWithTimeout(rca.mServiceIntent)
		.thenAccept(rc -> {
		rc.setHierarchyRootData(getHierarchyRootData());
		mUriToCollectionMapping.put(uri, rc);
		}));

		idToIntentMapping.put(rca.mIntentId, rca.mServiceIntent);
		rca.mItems = null;
		} else {
		for (RemoteViews views : rca.mItems.mViews) {
		collectionFuture = CompletableFuture.allOf(collectionFuture,
		collectAllIntentsNoComplete(views));
		collectAllIntentsInternal(views, idToIntentMapping);
		}
		}
		} else if (action instanceof ViewGroupActionAdd vgaa
		&& vgaa.mNestedViews != null) {
		collectionFuture = CompletableFuture.allOf(collectionFuture,
		collectAllIntentsNoComplete(vgaa.mNestedViews));
		collectAllIntentsInternal(vgaa.mNestedViews, idToIntentMapping);
		}
		}
		}
		}

		return collectionFuture;
		private @NonNull CompletableFuture<Void> connectAllUniqueIntents(int individualSize,
		@NonNull SparseArray<Intent> idToIntentMapping) {
		List<CompletableFuture<Void>> intentFutureList = new ArrayList<>();
		for (int i = 0; i < idToIntentMapping.size(); i++) {
		String currentIntentUri = mIdToUriMapping.get(idToIntentMapping.keyAt(i));
		Intent currentIntent = idToIntentMapping.valueAt(i);
		intentFutureList.add(getItemsFutureFromIntentWithTimeout(currentIntent,
		individualSize)
		.thenAccept(items -> {
		items.setHierarchyRootData(getHierarchyRootData());
		mUriToCollectionMapping.put(currentIntentUri, items);
		}));
		}

		return CompletableFuture.allOf(intentFutureList.toArray(CompletableFuture[]::new));
		}

		private static CompletableFuture<RemoteCollectionItems> getItemsFutureFromIntentWithTimeout(
		Intent intent) {
		Intent intent, int individualSize) {
		if (intent == null) {
		Log.e(LOG_TAG, "Null intent received when generating adapter future");
		return CompletableFuture.completedFuture(new RemoteCollectionItems
		@@ -1338,8 +1395,8 @@ public class RemoteViews implements Parcelable, Filter {
		}

		final Context context = ActivityThread.currentApplication();
		final CompletableFuture<RemoteCollectionItems> result = new CompletableFuture<>();

		final CompletableFuture<RemoteCollectionItems> result = new CompletableFuture<>();
		context.bindService(intent, Context.BindServiceFlags.of(Context.BIND_AUTO_CREATE),
		result.defaultExecutor(), new ServiceConnection() {
		@Override
		@@ -1348,11 +1405,11 @@ public class RemoteViews implements Parcelable, Filter {
		RemoteCollectionItems items;
		try {
		items = IRemoteViewsFactory.Stub.asInterface(iBinder)
		.getRemoteCollectionItems();
		.getRemoteCollectionItems(individualSize);
		} catch (RemoteException re) {
		items = new RemoteCollectionItems.Builder().build();
		Log.e(LOG_TAG, "Error getting collection items from the factory",
		re);
		Log.e(LOG_TAG, "Error getting collection items from the"
		+ " factory", re);
		} finally {
		context.unbindService(this);
		}
		@@ -1371,10 +1428,17 @@ public class RemoteViews implements Parcelable, Filter {
		return result;
		}

		public void writeToParcel(Parcel out, int flags) {
		public void writeToParcel(Parcel out, int flags,
		@Nullable SparseArray<Intent> intentsToIgnore) {
		out.writeInt(mIdToUriMapping.size());
		for (int i = 0; i < mIdToUriMapping.size(); i++) {
		out.writeInt(mIdToUriMapping.keyAt(i));
		int currentIntentId = mIdToUriMapping.keyAt(i);
		if (intentsToIgnore != null && intentsToIgnore.contains(currentIntentId)) {
		// Skip writing collections that are to be updated in the following steps to
		// better estimate the RemoteViews size.
		continue;
		}
		out.writeInt(currentIntentId);
		String intentUri = mIdToUriMapping.valueAt(i);
		out.writeString8(intentUri);
		mUriToCollectionMapping.get(intentUri).writeToParcel(out, flags, true);
		@@ -6724,7 +6788,13 @@ public class RemoteViews implements Parcelable, Filter {
		return 0;
		}

		@Override
		public void writeToParcel(Parcel dest, int flags) {
		writeToParcel(dest, flags, /* intentsToIgnore= */ null);
		}

		private void writeToParcel(Parcel dest, int flags,
		@Nullable SparseArray<Intent> intentsToIgnore) {
		boolean prevSquashingAllowed = dest.allowSquashing();

		if (!hasMultipleLayouts()) {
		@@ -6733,7 +6803,7 @@ public class RemoteViews implements Parcelable, Filter {
		// is shared by all children.
		if (mIsRoot) {
		mBitmapCache.writeBitmapsToParcel(dest, flags);
		mCollectionCache.writeToParcel(dest, flags);
		mCollectionCache.writeToParcel(dest, flags, intentsToIgnore);
		}
		mApplication.writeToParcel(dest, flags);
		if (mIsRoot \|\| mIdealSize == null) {
		@@ -6750,7 +6820,7 @@ public class RemoteViews implements Parcelable, Filter {
		dest.writeInt(MODE_HAS_SIZED_REMOTEVIEWS);
		if (mIsRoot) {
		mBitmapCache.writeBitmapsToParcel(dest, flags);
		mCollectionCache.writeToParcel(dest, flags);
		mCollectionCache.writeToParcel(dest, flags, intentsToIgnore);
		}
		dest.writeInt(mSizedRemoteViews.size());
		for (RemoteViews view : mSizedRemoteViews) {
		@@ -6762,7 +6832,7 @@ public class RemoteViews implements Parcelable, Filter {
		// is shared by all children.
		if (mIsRoot) {
		mBitmapCache.writeBitmapsToParcel(dest, flags);
		mCollectionCache.writeToParcel(dest, flags);
		mCollectionCache.writeToParcel(dest, flags, intentsToIgnore);
		}
		mLandscape.writeToParcel(dest, flags);
		// Both RemoteViews already share the same package and user

core/java/android/widget/RemoteViewsService.java

+15 −10

Original line number	Diff line number	Diff line
		@@ -19,6 +19,7 @@ package android.widget;
		import android.app.Service;
		import android.content.Intent;
		import android.os.IBinder;
		import android.os.Parcel;

		import com.android.internal.widget.IRemoteViewsFactory;

		@@ -42,13 +43,6 @@ public abstract class RemoteViewsService extends Service {
		new HashMap<Intent.FilterComparison, RemoteViewsFactory>();
		private static final Object sLock = new Object();

		/**
		* Used for determining the maximum number of entries to retrieve from RemoteViewsFactory
		*
		* @hide
		*/
		private static final int MAX_NUM_ENTRY = 10;

		/**
		* An interface for an adapter between a remote collection view (ListView, GridView, etc) and
		* the underlying data for that view. The implementor is responsible for making a RemoteView
		@@ -235,9 +229,10 @@ public abstract class RemoteViewsService extends Service {
		}

		@Override
		public RemoteViews.RemoteCollectionItems getRemoteCollectionItems() {
		public RemoteViews.RemoteCollectionItems getRemoteCollectionItems(int capSize) {
		RemoteViews.RemoteCollectionItems items = new RemoteViews.RemoteCollectionItems
		.Builder().build();
		Parcel capSizeTestParcel = Parcel.obtain();

		try {
		RemoteViews.RemoteCollectionItems.Builder itemsBuilder =
		@@ -245,15 +240,25 @@ public abstract class RemoteViewsService extends Service {
		mFactory.onDataSetChanged();

		itemsBuilder.setHasStableIds(mFactory.hasStableIds());
		final int numOfEntries = Math.min(mFactory.getCount(), MAX_NUM_ENTRY);
		final int numOfEntries = mFactory.getCount();

		for (int i = 0; i < numOfEntries; i++) {
		itemsBuilder.addItem(mFactory.getItemId(i), mFactory.getViewAt(i));
		final long currentItemId = mFactory.getItemId(i);
		final RemoteViews currentView = mFactory.getViewAt(i);
		currentView.writeToParcel(capSizeTestParcel, 0);
		if (capSizeTestParcel.dataSize() > capSize) {
		break;
		}
		itemsBuilder.addItem(currentItemId, currentView);
		}

		items = itemsBuilder.build();
		} catch (Exception ex) {
		Thread t = Thread.currentThread();
		Thread.getDefaultUncaughtExceptionHandler().uncaughtException(t, ex);
		} finally {
		// Recycle the parcel
		capSizeTestParcel.recycle();
		}
		return items;
		}

core/java/com/android/internal/widget/IRemoteViewsFactory.aidl

+1 −1

Original line number	Diff line number	Diff line
		@@ -39,6 +39,6 @@ interface IRemoteViewsFactory {
		boolean hasStableIds();
		@UnsupportedAppUsage(maxTargetSdk = 30, trackingBug = 170729553)
		boolean isCreated();
		RemoteViews.RemoteCollectionItems getRemoteCollectionItems();
		RemoteViews.RemoteCollectionItems getRemoteCollectionItems(int capSize);
		}

core/tests/coretests/src/android/widget/RemoteViewsAdapterTest.java

+1 −1

Original line number	Diff line number	Diff line
		@@ -355,7 +355,7 @@ public class RemoteViewsAdapterTest {
		}

		@Override
		public RemoteViews.RemoteCollectionItems getRemoteCollectionItems() {
		public RemoteViews.RemoteCollectionItems getRemoteCollectionItems(int capSize) {
		RemoteViews.RemoteCollectionItems.Builder itemsBuilder =
		new RemoteViews.RemoteCollectionItems.Builder();
		itemsBuilder.setHasStableIds(hasStableIds())

services/appwidget/java/com/android/server/appwidget/AppWidgetServiceImpl.java

+7 −0

Original line number	Diff line number	Diff line
		@@ -2074,6 +2074,7 @@ class AppWidgetServiceImpl extends IAppWidgetService.Stub implements WidgetBacku
		private void handleNotifyAppWidgetViewDataChanged(Host host, IAppWidgetHost callbacks,
		int appWidgetId, int viewId, long requestId) {
		try {
		Slog.d(TAG, "Trying to notify widget view data changed");
		callbacks.viewDataChanged(appWidgetId, viewId);
		host.lastWidgetUpdateSequenceNo = requestId;
		} catch (RemoteException re) {
		@@ -2158,6 +2159,9 @@ class AppWidgetServiceImpl extends IAppWidgetService.Stub implements WidgetBacku
		private void handleNotifyUpdateAppWidget(Host host, IAppWidgetHost callbacks,
		int appWidgetId, RemoteViews views, long requestId) {
		try {
		Slog.d(TAG, "Trying to notify widget update for package "
		+ (views == null ? "null" : views.getPackage())
		+ " with widget id: " + appWidgetId);
		callbacks.updateAppWidget(appWidgetId, views);
		host.lastWidgetUpdateSequenceNo = requestId;
		} catch (RemoteException re) {
		@@ -2196,6 +2200,7 @@ class AppWidgetServiceImpl extends IAppWidgetService.Stub implements WidgetBacku
		private void handleNotifyProviderChanged(Host host, IAppWidgetHost callbacks,
		int appWidgetId, AppWidgetProviderInfo info, long requestId) {
		try {
		Slog.d(TAG, "Trying to notify provider update");
		callbacks.providerChanged(appWidgetId, info);
		host.lastWidgetUpdateSequenceNo = requestId;
		} catch (RemoteException re) {
		@@ -2239,6 +2244,7 @@ class AppWidgetServiceImpl extends IAppWidgetService.Stub implements WidgetBacku
		private void handleNotifyAppWidgetRemoved(Host host, IAppWidgetHost callbacks, int appWidgetId,
		long requestId) {
		try {
		Slog.d(TAG, "Trying to notify widget removed");
		callbacks.appWidgetRemoved(appWidgetId);
		host.lastWidgetUpdateSequenceNo = requestId;
		} catch (RemoteException re) {
		@@ -2286,6 +2292,7 @@ class AppWidgetServiceImpl extends IAppWidgetService.Stub implements WidgetBacku

		private void handleNotifyProvidersChanged(Host host, IAppWidgetHost callbacks) {
		try {
		Slog.d(TAG, "Trying to notify widget providers changed");
		callbacks.providersChanged();
		} catch (RemoteException re) {
		synchronized (mLock) {