Initialize focus overlay manager if it is not initialized.

Camera open thread initializes the focus overlay manager
after opening camera. In a rare scenario above background
thread had not initialized focus overlay manager by the
time UI thread start acessesing it, so we see a crash.
Initialize focus overlay manager from UI thread if it is
not initialized already.

Change-Id: I1635c8759d0e0647fe61fe975a0cc24df40df529

1 files changed, 9 insertions, 3 deletions

diff --git a/src/com/android/camera/PhotoModule.java b/src/com/android/camera/PhotoModule.java
index 4d311bad3..da6278d08 100644
--- a/src/com/android/camera/PhotoModule.java
+++ b/src/com/android/camera/PhotoModule.java
@@ -2369,9 +2369,13 @@ public class PhotoModule
             mMirror = (info.facing == CameraInfo.CAMERA_FACING_FRONT);
             String[] defaultFocusModes = mActivity.getResources().getStringArray(
                     R.array.pref_camera_focusmode_default_array);
-            mFocusManager = new FocusOverlayManager(mPreferences, defaultFocusModes,
-                    mInitialParams, this, mMirror,
-                    mActivity.getMainLooper(), mUI);
+            synchronized (this){
+                if (mFocusManager == null) {
+                    mFocusManager = new FocusOverlayManager(mPreferences, defaultFocusModes,
+                            mInitialParams, this, mMirror,
+                            mActivity.getMainLooper(), mUI);
+                }
+            }
         }
     }
 
@@ -2651,6 +2655,8 @@ public class PhotoModule
             stopPreview();
         }
 
+        if (mFocusManager == null) initializeFocusManager();
+
         if (!mSnapshotOnIdle) {
             mFocusManager.setAeAwbLock(false); // Unlock AE and AWB.
         }