Add Mic Toggle button to AppRTCDemo (Android).

webrtc/examples/androidapp/src/org/appspot/apprtc/CallFragment.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 13 matching lines @@
 
 /**
  * Fragment for call control.
  */
 public class CallFragment extends Fragment {
   private View controlView;
   private TextView contactView;
   private ImageButton disconnectButton;
   private ImageButton cameraSwitchButton;
   private ImageButton videoScalingButton;
+  private ImageButton toggleMuteButton;
   private TextView captureFormatText;
   private SeekBar captureFormatSlider;
   private OnCallEvents callEvents;
   private ScalingType scalingType;
   private boolean videoCallEnabled = true;
 
   /**
    * Call control interface for container activity.
    */
   public interface OnCallEvents {
     public void onCallHangUp();
     public void onCameraSwitch();
     public void onVideoScalingSwitch(ScalingType scalingType);
     public void onCaptureFormatChange(int width, int height, int framerate);
+    public boolean onToggleMic();
   }
 
   @Override
   public View onCreateView(LayoutInflater inflater, ViewGroup container,
       Bundle savedInstanceState) {
     controlView =
         inflater.inflate(R.layout.fragment_call, container, false);
 
     // Create UI controls.
     contactView =
         (TextView) controlView.findViewById(R.id.contact_name_call);
     disconnectButton =
         (ImageButton) controlView.findViewById(R.id.button_call_disconnect);
     cameraSwitchButton =
         (ImageButton) controlView.findViewById(R.id.button_call_switch_camera);
     videoScalingButton =
         (ImageButton) controlView.findViewById(R.id.button_call_scaling_mode);
+    toggleMuteButton =
+        (ImageButton) controlView.findViewById(R.id.button_call_toggle_mic);
     captureFormatText =
         (TextView) controlView.findViewById(R.id.capture_format_text_call);
     captureFormatSlider =
         (SeekBar) controlView.findViewById(R.id.capture_format_slider_call);
 
     // Add buttons click events.
     disconnectButton.setOnClickListener(new View.OnClickListener() {
       @Override
       public void onClick(View view) {
         callEvents.onCallHangUp();
@@ skipping 17 matching lines @@
         } else {
           videoScalingButton.setBackgroundResource(
               R.drawable.ic_action_return_from_full_screen);
           scalingType = ScalingType.SCALE_ASPECT_FILL;
         }
         callEvents.onVideoScalingSwitch(scalingType);
       }
     });
     scalingType = ScalingType.SCALE_ASPECT_FILL;
 
+    toggleMuteButton.setOnClickListener(new View.OnClickListener() {
+      @Override
+      public void onClick(View view) {
+        boolean enabled = callEvents.onToggleMic();
+        toggleMuteButton.setAlpha(enabled ? 1.0f : 0.3f);
+      }
+    });
+
     return controlView;
   }
 
   @Override
   public void onStart() {
     super.onStart();
 
     boolean captureSliderEnabled = false;
     Bundle args = getArguments();
     if (args != null) {
@@ skipping 15 matching lines @@
     }
   }
 
   @Override
   public void onAttach(Activity activity) {
     super.onAttach(activity);
     callEvents = (OnCallEvents) activity;
   }
 
 }