Stop camera onStop instead of onPause.

webrtc/examples/androidapp/src/org/appspot/apprtc/CallActivity.java

 /*
  *  Copyright 2015 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 392 matching lines @@
           return videoCapturer;
         }
       }
     }
 
     return null;
   }
 
   // Activity interfaces
   @Override
-  public void onPause() {
-    super.onPause();
+  public void onStop() {
+    super.onStop();
     activityRunning = false;
     // Don't stop the video when using screencapture to allow user to show other apps to the remote
     // end.
     if (peerConnectionClient != null && !screencaptureEnabled) {
       peerConnectionClient.stopVideoSource();
     }
     cpuMonitor.pause();
   }
 
   @Override
-  public void onResume() {
-    super.onResume();
+  public void onStart() {
+    super.onStart();
     activityRunning = true;
     // Video is not paused for screencapture. See onPause.
     if (peerConnectionClient != null && !screencaptureEnabled) {
       peerConnectionClient.startVideoSource();
     }
     cpuMonitor.resume();
   }
 
   @Override
   protected void onDestroy() {
@@ skipping 453 matching lines @@
         }
       }
     });
   }
 
   @Override
   public void onPeerConnectionError(final String description) {
     reportError(description);
   }
 }