Add Mic Toggle button to AppRTCDemo (Android).

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 114 matching lines @@
   private Toast logToast;
   private boolean commandLineRun;
   private int runTimeMs;
   private boolean activityRunning;
   private RoomConnectionParameters roomConnectionParameters;
   private PeerConnectionParameters peerConnectionParameters;
   private boolean iceConnected;
   private boolean isError;
   private boolean callControlFragmentVisible = true;
   private long callStartedTimeMs = 0;
+  private boolean micEnabled = true;
 
   // Controls
   private CallFragment callFragment;
   private HudFragment hudFragment;
   private CpuMonitor cpuMonitor;
 
 
   @Override
   public void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
@@ skipping 185 matching lines @@
     updateVideoView();
   }
 
   @Override
   public void onCaptureFormatChange(int width, int height, int framerate) {
     if (peerConnectionClient != null) {
       peerConnectionClient.changeCaptureFormat(width, height, framerate);
     }
   }
 
+  @Override
+  public boolean onToggleMic() {
+    if (peerConnectionClient != null) {
+      micEnabled = !micEnabled;
+      peerConnectionClient.setAudioEnabled(micEnabled);
+    }
+    return micEnabled;
+  }
+
   // Helper functions.
   private void toggleCallControlFragmentVisibility() {
     if (!iceConnected || !callFragment.isAdded()) {
       return;
     }
     // Show/hide call control fragment
     callControlFragmentVisible = !callControlFragmentVisible;
     FragmentTransaction ft = getFragmentManager().beginTransaction();
     if (callControlFragmentVisible) {
       ft.show(callFragment);
@@ skipping 340 matching lines @@
         }
       }
     });
   }
 
   @Override
   public void onPeerConnectionError(final String description) {
     reportError(description);
   }
 }