[BGF] For MultiProcess.java enable audio&video feature, fix a crash when Join then Leave channel.

Author: oOJohn6Oo

Android/APIExample/app/src/main/java/io/agora/api/example/examples/advanced/MultiProcess.java

@@ -192,7 +192,8 @@ public void onClick(View v)
                  *          triggers the removeInjectStreamUrl method.*/
                 engine.leaveChannel();
                 join.setText(getString(R.string.join));
-                mSSClient.stop(getContext());
+                if(isSharing)
+                    mSSClient.stop(getContext());
                 screenShare.setText(getResources().getString(R.string.screenshare));
                 screenShare.setEnabled(false);
                 isSharing = false;
@@ -244,9 +245,6 @@ private void joinChannel(String channelId)
         fl_local.addView(surfaceView, new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
         // Setup local video to render your local camera preview
         engine.setupLocalVideo(new VideoCanvas(surfaceView, RENDER_MODE_HIDDEN, 0));
-        // Set audio route to microPhone
-        engine.disableAudio();
-//        engine.setDefaultAudioRoutetoSpeakerphone(false);
 
         /** Sets the channel profile of the Agora RtcEngine.
          CHANNEL_PROFILE_COMMUNICATION(0): (Default) The Communication profile.
@@ -281,8 +279,8 @@ private void joinChannel(String channelId)
          if you do not specify the uid, we will generate the uid for you*/
 
         ChannelMediaOptions option = new ChannelMediaOptions();
-        option.autoSubscribeAudio = false;
-        option.autoSubscribeVideo = false;
+        option.autoSubscribeAudio = true;
+        option.autoSubscribeVideo = true;
         int res = engine.joinChannel(accessToken, channelId, "Extra Optional Data", 0, option);
         if (res != 0)
         {

Android/APIExample/lib-screensharing/src/main/java/io/agora/rtc/ss/ScreenSharingClient.java

@@ -35,7 +35,7 @@ public static ScreenSharingClient getInstance() {
         return mInstance;
     }
 
-    private ServiceConnection mScreenShareConn = new ServiceConnection() {
+    private final ServiceConnection mScreenShareConn = new ServiceConnection() {
         public void onServiceConnected(ComponentName className, IBinder service) {
             mScreenShareSvc = IScreenSharing.Stub.asInterface(service);
 
@@ -54,7 +54,7 @@ public void onServiceDisconnected(ComponentName className) {
         }
     };
 
-    private INotification mNotification = new INotification.Stub() {
+    private final INotification mNotification = new INotification.Stub() {
         /**
          * This is called by the remote service to tell us about error happened.
          * Note that IPC calls are dispatched through a thread