Merge "Grant SYSTEM_ALERT_WINDOW during screen capture." into rvc-dev am: 9b081e496d (1b822b33) · Commits · e / os / android_frameworks_base

media/java/android/media/projection/MediaProjectionManager.java

+6 −2

Original line number	Diff line number	Diff line
		@@ -23,8 +23,6 @@ import android.app.Activity;
		import android.content.ComponentName;
		import android.content.Context;
		import android.content.Intent;
		import android.content.pm.PackageManager;
		import android.media.projection.IMediaProjection;
		import android.os.Handler;
		import android.os.IBinder;
		import android.os.RemoteException;
		@@ -86,6 +84,12 @@ public final class MediaProjectionManager {
		* capture request. Will be null if the result from the
		* startActivityForResult() is anything other than RESULT_OK.
		*
		* Starting from Android {@link android.os.Build.VERSION_CODES#R}, if your application requests
		* the {@link android.Manifest.permission#SYSTEM_ALERT_WINDOW} permission, and the
		* user has not explicitly denied it, the permission will be automatically granted until the
		* projection is stopped. This allows for user controls to be displayed on top of the screen
		* being captured.
		*
		* @param resultCode The result code from {@link android.app.Activity#onActivityResult(int,
		* int, android.content.Intent)}
		* @param resultData The resulting data from {@link android.app.Activity#onActivityResult(int,

services/core/java/com/android/server/media/projection/MediaProjectionManagerService.java

+51 −1

Original line number	Diff line number	Diff line
		@@ -22,6 +22,7 @@ import android.app.AppOpsManager;
		import android.app.IProcessObserver;
		import android.content.Context;
		import android.content.pm.ApplicationInfo;
		import android.content.pm.PackageInfo;
		import android.content.pm.PackageManager;
		import android.content.pm.PackageManager.NameNotFoundException;
		import android.content.pm.ServiceInfo;
		@@ -43,6 +44,7 @@ import android.os.UserHandle;
		import android.util.ArrayMap;
		import android.util.Slog;

		import com.android.internal.util.ArrayUtils;
		import com.android.internal.util.DumpUtils;
		import com.android.server.LocalServices;
		import com.android.server.SystemService;
		@@ -399,11 +401,12 @@ public final class MediaProjectionManagerService extends SystemService
		public final UserHandle userHandle;
		private final int mTargetSdkVersion;
		private final boolean mIsPrivileged;
		private final int mType;

		private IMediaProjectionCallback mCallback;
		private IBinder mToken;
		private IBinder.DeathRecipient mDeathEater;
		private int mType;
		private boolean mRestoreSystemAlertWindow;

		MediaProjection(int type, int uid, String packageName, int targetSdkVersion,
		boolean isPrivileged) {
		@@ -494,6 +497,35 @@ public final class MediaProjectionManagerService extends SystemService
		"MediaProjectionCallbacks must be valid, aborting MediaProjection", e);
		return;
		}
		if (mType == MediaProjectionManager.TYPE_SCREEN_CAPTURE) {
		final long token = Binder.clearCallingIdentity();
		try {
		// We allow an app running a current screen capture session to use
		// SYSTEM_ALERT_WINDOW for the duration of the session, to enable
		// them to overlay their UX on top of what is being captured.
		// We only do this if the app requests the permission, and the appop
		// is in its default state (the user has neither explicitly allowed nor
		// disallowed it).
		final PackageInfo packageInfo = mPackageManager.getPackageInfoAsUser(
		packageName, PackageManager.GET_PERMISSIONS,
		UserHandle.getUserId(uid));
		if (ArrayUtils.contains(packageInfo.requestedPermissions,
		Manifest.permission.SYSTEM_ALERT_WINDOW)) {
		final int currentMode = mAppOps.unsafeCheckOpRawNoThrow(
		AppOpsManager.OP_SYSTEM_ALERT_WINDOW, uid, packageName);
		if (currentMode == AppOpsManager.MODE_DEFAULT) {
		mAppOps.setMode(AppOpsManager.OP_SYSTEM_ALERT_WINDOW, uid,
		packageName, AppOpsManager.MODE_ALLOWED);
		mRestoreSystemAlertWindow = true;
		}
		}
		} catch (PackageManager.NameNotFoundException e) {
		Slog.w(TAG, "Package not found, aborting MediaProjection", e);
		return;
		} finally {
		Binder.restoreCallingIdentity(token);
		}
		}
		startProjectionLocked(this);
		}
		}
		@@ -507,6 +539,24 @@ public final class MediaProjectionManagerService extends SystemService
		+ "pid=" + Binder.getCallingPid() + ")");
		return;
		}
		if (mRestoreSystemAlertWindow) {
		final long token = Binder.clearCallingIdentity();
		try {
		// Put the appop back how it was, unless it has been changed from what
		// we set it to.
		// Note that WindowManager takes care of removing any existing overlay
		// windows when we do this.
		final int currentMode = mAppOps.unsafeCheckOpRawNoThrow(
		AppOpsManager.OP_SYSTEM_ALERT_WINDOW, uid, packageName);
		if (currentMode == AppOpsManager.MODE_ALLOWED) {
		mAppOps.setMode(AppOpsManager.OP_SYSTEM_ALERT_WINDOW, uid, packageName,
		AppOpsManager.MODE_DEFAULT);
		}
		mRestoreSystemAlertWindow = false;
		} finally {
		Binder.restoreCallingIdentity(token);
		}
		}
		stopProjectionLocked(this);
		mToken.unlinkToDeath(mDeathEater, 0);
		mToken = null;