Fix android.process.media got killed when capture

android.process.media has a very low priority as Cached app in background.
When snapdragon camera using ContentResolver and do query/updating it will
promot to foreground priority, but there may have some race condition
that lmk in the progress to kill media, and AMS want set to foreground.
So, keep this process as foreground during the whole ActivityLife time,
by hold a query cursor onCreate and destory onStop.

CRs-Fixed: 984061
Change-Id: I530fddfa240030ad84dc09b599ad783f6a2f21e0

1 files changed, 5 insertions, 0 deletions

diff --git a/src/com/android/camera/CameraActivity.java b/src/com/android/camera/CameraActivity.java
index 186fa514a..a9a78e7b3 100644
--- a/src/com/android/camera/CameraActivity.java
+++ b/src/com/android/camera/CameraActivity.java
@@ -252,6 +252,7 @@ public class CameraActivity extends Activity
     // FilmStripView.setDataAdapter fires 2 onDataLoaded calls before any data is actually loaded
     // Keep track of data request here to avoid creating useless UpdateThumbnailTask.
     private boolean mDataRequested;
+    private Cursor mCursor;
 
     private WakeLock mWakeLock;
     private Context mContext;
@@ -1437,6 +1438,8 @@ public class CameraActivity extends Activity
             mSecureCamera = intent.getBooleanExtra(SECURE_CAMERA_EXTRA, false);
         }
 
+        mCursor = getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, null, null, null, null);
+
         if (mSecureCamera) {
             // Change the window flags so that secure camera can show when locked
             Window win = getWindow();
@@ -1757,6 +1760,8 @@ public class CameraActivity extends Activity
         getContentResolver().unregisterContentObserver(mLocalVideosObserver);
         unregisterReceiver(mSDcardMountedReceiver);
 
+        mCursor.close();
+        mCursor=null;
         super.onDestroy();
     }