Cache the default launcher. (10305208) · Commits · e / os / android_frameworks_base

core/java/android/content/Intent.java

+16 −0

Original line number	Diff line number	Diff line
		@@ -2218,6 +2218,22 @@ public class Intent implements Parcelable, Cloneable {
		public static final String ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE =
		"android.intent.action.EXTERNAL_APPLICATIONS_UNAVAILABLE";

		/**
		* Broadcast Action: preferred activities have changed explicitly.
		*
		* <p>Note there are cases where a preferred activity is invalidated implicitly, e.g.
		* when an app is installed or uninstalled, but in such cases this broadcast will not
		* be sent.
		*
		* {@link #EXTRA_USER_HANDLE} contains the user ID in question.
		*
		* @hide
		*/
		@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
		public static final String ACTION_PREFERRED_ACTIVITY_CHANGED =
		"android.intent.action.ACTION_PREFERRED_ACTIVITY_CHANGED";


		/**
		* Broadcast Action: The current system wallpaper has changed. See
		* {@link android.app.WallpaperManager} for retrieving the new wallpaper.

core/res/AndroidManifest.xml

+1 −0

Original line number	Diff line number	Diff line
		@@ -49,6 +49,7 @@
		<protected-broadcast android:name="android.intent.action.PACKAGE_VERIFIED" />
		<protected-broadcast android:name="android.intent.action.PACKAGES_SUSPENDED" />
		<protected-broadcast android:name="android.intent.action.PACKAGES_UNSUSPENDED" />
		<protected-broadcast android:name="android.intent.action.ACTION_PREFERRED_ACTIVITY_CHANGED" />
		<protected-broadcast android:name="android.intent.action.UID_REMOVED" />
		<protected-broadcast android:name="android.intent.action.QUERY_PACKAGE_RESTART" />
		<protected-broadcast android:name="android.intent.action.CONFIGURATION_CHANGED" />

services/core/java/com/android/server/pm/PackageManagerService.java

+24 −0

Original line number	Diff line number	Diff line
		@@ -16886,9 +16886,28 @@ public class PackageManagerService extends IPackageManager.Stub {
		filter.dump(new LogPrinter(Log.INFO, TAG), " ");
		pir.addFilter(new PreferredActivity(filter, match, set, activity, always));
		scheduleWritePackageRestrictionsLocked(userId);
		postPreferredActivityChangedBroadcast(userId);
		}
		}

		private void postPreferredActivityChangedBroadcast(int userId) {
		mHandler.post(() -> {
		final IActivityManager am = ActivityManagerNative.getDefault();
		if (am == null) {
		return;
		}

		final Intent intent = new Intent(Intent.ACTION_PREFERRED_ACTIVITY_CHANGED);
		intent.putExtra(Intent.EXTRA_USER_HANDLE, userId);
		try {
		am.broadcastIntent(null, intent, null, null,
		0, null, null, null, android.app.AppOpsManager.OP_NONE,
		null, false, false, userId);
		} catch (RemoteException e) {
		}
		});
		}

		@Override
		public void replacePreferredActivity(IntentFilter filter, int match,
		ComponentName[] set, ComponentName activity, int userId) {
		@@ -17040,6 +17059,9 @@ public class PackageManagerService extends IPackageManager.Stub {
		changed = true;
		}
		}
		if (changed) {
		postPreferredActivityChangedBroadcast(userId);
		}
		return changed;
		}

		@@ -17153,6 +17175,7 @@ public class PackageManagerService extends IPackageManager.Stub {
		mSettings.editPersistentPreferredActivitiesLPw(userId).addFilter(
		new PersistentPreferredActivity(filter, activity));
		scheduleWritePackageRestrictionsLocked(userId);
		postPreferredActivityChangedBroadcast(userId);
		}
		}

		@@ -17195,6 +17218,7 @@ public class PackageManagerService extends IPackageManager.Stub {

		if (changed) {
		scheduleWritePackageRestrictionsLocked(userId);
		postPreferredActivityChangedBroadcast(userId);
		}
		}
		}

services/core/java/com/android/server/pm/ShortcutService.java

+40 −16

Original line number	Diff line number	Diff line
		@@ -385,6 +385,12 @@ public class ShortcutService extends IShortcutService.Stub {
		mContext.registerReceiverAsUser(mPackageMonitor, UserHandle.ALL,
		packageFilter, null, mHandler);

		final IntentFilter preferedActivityFilter = new IntentFilter();
		preferedActivityFilter.addAction(Intent.ACTION_PREFERRED_ACTIVITY_CHANGED);
		preferedActivityFilter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY);
		mContext.registerReceiverAsUser(mPackageMonitor, UserHandle.ALL,
		preferedActivityFilter, null, mHandler);

		final IntentFilter localeFilter = new IntentFilter();
		localeFilter.addAction(Intent.ACTION_LOCALE_CHANGED);
		localeFilter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY);
		@@ -1923,7 +1929,12 @@ public class ShortcutService extends IShortcutService.Stub {

		// We override this method in unit tests to do a simpler check.
		boolean hasShortcutHostPermission(@NonNull String callingPackage, int userId) {
		final long start = injectElapsedRealtime();
		try {
		return hasShortcutHostPermissionInner(callingPackage, userId);
		} finally {
		logDurationStat(Stats.LAUNCHER_PERMISSION_CHECK, start);
		}
		}

		// This method is extracted so we can directly call this method from unit tests,
		@@ -1931,15 +1942,22 @@ public class ShortcutService extends IShortcutService.Stub {
		@VisibleForTesting
		boolean hasShortcutHostPermissionInner(@NonNull String callingPackage, int userId) {
		synchronized (mLock) {
		final long start = injectElapsedRealtime();

		final ShortcutUser user = getUserShortcutsLocked(userId);

		// Always trust the in-memory cache.
		final ComponentName cached = user.getCachedLauncher();
		if (cached != null) {
		if (cached.getPackageName().equals(callingPackage)) {
		return true;
		}
		}
		// If the cached one doesn't match, then go ahead

		final List<ResolveInfo> allHomeCandidates = new ArrayList<>();

		// Default launcher from package manager.
		final long startGetHomeActivitiesAsUser = injectElapsedRealtime();
		final ComponentName defaultLauncher = injectPackageManagerInternal()
		final ComponentName defaultLauncher = mPackageManagerInternal
		.getHomeActivitiesAsUser(allHomeCandidates, userId);
		logDurationStat(Stats.GET_DEFAULT_HOME, startGetHomeActivitiesAsUser);

		@@ -1950,7 +1968,7 @@ public class ShortcutService extends IShortcutService.Stub {
		Slog.v(TAG, "Default launcher from PM: " + detected);
		}
		} else {
		detected = user.getDefaultLauncherComponent();
		detected = user.getLastKnownLauncher();

		if (detected != null) {
		if (injectIsActivityEnabledAndExported(detected, userId)) {
		@@ -1960,7 +1978,7 @@ public class ShortcutService extends IShortcutService.Stub {
		} else {
		Slog.w(TAG, "Cached launcher " + detected + " no longer exists");
		detected = null;
		user.setDefaultLauncherComponent(null);
		user.clearLauncher();
		}
		}
		}
		@@ -1991,13 +2009,13 @@ public class ShortcutService extends IShortcutService.Stub {
		lastPriority = ri.priority;
		}
		}
		logDurationStat(Stats.LAUNCHER_PERMISSION_CHECK, start);

		// Update the cache.
		user.setLauncher(detected);
		if (detected != null) {
		if (DEBUG) {
		Slog.v(TAG, "Detected launcher: " + detected);
		}
		user.setDefaultLauncherComponent(detected);
		return detected.getPackageName().equals(callingPackage);
		} else {
		// Default launcher not found.
		@@ -2358,6 +2376,17 @@ public class ShortcutService extends IShortcutService.Stub {
		return;
		}

		// Whenever we get one of those package broadcasts, or get
		// ACTION_PREFERRED_ACTIVITY_CHANGED, we purge the default launcher cache.
		synchronized (mLock) {
		final ShortcutUser user = getUserShortcutsLocked(userId);
		user.clearLauncher();
		}
		if (Intent.ACTION_PREFERRED_ACTIVITY_CHANGED.equals(action)) {
		// Nothing farther to do.
		return;
		}

		final Uri intentUri = intent.getData();
		final String packageName = (intentUri != null) ? intentUri.getSchemeSpecificPart()
		: null;
		@@ -3260,7 +3289,7 @@ public class ShortcutService extends IShortcutService.Stub {

		private void clearLauncher() {
		synchronized (mLock) {
		getUserShortcutsLocked(mUserId).setDefaultLauncherComponent(null);
		getUserShortcutsLocked(mUserId).forceClearLauncher();
		}
		}

		@@ -3270,7 +3299,7 @@ public class ShortcutService extends IShortcutService.Stub {
		hasShortcutHostPermissionInner("-", mUserId);

		getOutPrintWriter().println("Launcher: "
		+ getUserShortcutsLocked(mUserId).getDefaultLauncherComponent());
		+ getUserShortcutsLocked(mUserId).getLastKnownLauncher());
		}
		}

		@@ -3394,11 +3423,6 @@ public class ShortcutService extends IShortcutService.Stub {
		}
		}

		@VisibleForTesting
		PackageManagerInternal injectPackageManagerInternal() {
		return mPackageManagerInternal;
		}

		File getUserBitmapFilePath(@UserIdInt int userId) {
		return new File(injectUserDataPath(userId), DIRECTORY_BITMAPS);
		}
		@@ -3482,7 +3506,7 @@ public class ShortcutService extends IShortcutService.Stub {
		}

		private void verifyStatesInner() {
		synchronized (this) {
		synchronized (mLock) {
		forEachLoadedUserLocked(u -> u.forAllPackageItems(ShortcutPackageItem::verifyStates));
		}
		}

services/core/java/com/android/server/pm/ShortcutUser.java

+49 −12

Original line number	Diff line number	Diff line
		@@ -103,8 +103,15 @@ class ShortcutUser {

		private final ArrayMap<PackageWithUser, ShortcutLauncher> mLaunchers = new ArrayMap<>();

		/** Default launcher that can access the launcher apps APIs. */
		private ComponentName mDefaultLauncherComponent;
		/**
		* Last known launcher. It's used when the default launcher isn't set in PM -- i.e.
		* when getHomeActivitiesAsUser() return null. We need it so that in this situation the
		* previously default launcher can still access shortcuts.
		*/
		private ComponentName mLastKnownLauncher;

		/** In-memory-cached default launcher. */
		private ComponentName mCachedLauncher;

		private String mKnownLocales;

		@@ -304,8 +311,7 @@ class ShortcutUser {
		ShortcutService.writeAttr(out, ATTR_LAST_APP_SCAN_TIME,
		mLastAppScanTime);

		ShortcutService.writeTagValue(out, TAG_LAUNCHER,
		mDefaultLauncherComponent);
		ShortcutService.writeTagValue(out, TAG_LAUNCHER, mLastKnownLauncher);

		// Can't use forEachPackageItem due to the checked exceptions.
		{
		@@ -364,7 +370,7 @@ class ShortcutUser {
		if (depth == outerDepth + 1) {
		switch (tag) {
		case TAG_LAUNCHER: {
		ret.mDefaultLauncherComponent = ShortcutService.parseComponentNameAttribute(
		ret.mLastKnownLauncher = ShortcutService.parseComponentNameAttribute(
		parser, ATTR_VALUE);
		continue;
		}
		@@ -389,18 +395,44 @@ class ShortcutUser {
		return ret;
		}

		public ComponentName getDefaultLauncherComponent() {
		return mDefaultLauncherComponent;
		public ComponentName getLastKnownLauncher() {
		return mLastKnownLauncher;
		}

		public void setLauncher(ComponentName launcherComponent) {
		setLauncher(launcherComponent, /* allowPurgeLastKnown */ false);
		}

		public void setDefaultLauncherComponent(ComponentName launcherComponent) {
		if (Objects.equal(mDefaultLauncherComponent, launcherComponent)) {
		/** Clears the launcher information without clearing the last known one */
		public void clearLauncher() {
		setLauncher(null);
		}

		/**
		* Clears the launcher information with( clearing the last known one; we do this witl
		* "cmd shortcut clear-default-launcher".
		*/
		public void forceClearLauncher() {
		setLauncher(null, /* allowPurgeLastKnown */ true);
		}

		private void setLauncher(ComponentName launcherComponent, boolean allowPurgeLastKnown) {
		mCachedLauncher = launcherComponent; // Always update the in-memory cache.

		if (Objects.equal(mLastKnownLauncher, launcherComponent)) {
		return;
		}
		mDefaultLauncherComponent = launcherComponent;
		if (!allowPurgeLastKnown && launcherComponent == null) {
		return;
		}
		mLastKnownLauncher = launcherComponent;
		mService.scheduleSaveUser(mUserId);
		}

		public ComponentName getCachedLauncher() {
		return mCachedLauncher;
		}

		public void resetThrottling() {
		for (int i = mPackages.size() - 1; i >= 0; i--) {
		mPackages.valueAt(i).resetThrottling();
		@@ -422,8 +454,13 @@ class ShortcutUser {
		prefix += prefix + " ";

		pw.print(prefix);
		pw.print("Default launcher: ");
		pw.print(mDefaultLauncherComponent);
		pw.print("Cached launcher: ");
		pw.print(mCachedLauncher);
		pw.println();

		pw.print(prefix);
		pw.print("Last known launcher: ");
		pw.print(mLastKnownLauncher);
		pw.println();

		for (int i = 0; i < mLaunchers.size(); i++) {