diff --git a/app/src/main/java/com/example/ivdemo/DuplexVideoActivity.java b/app/src/main/java/com/example/ivdemo/DuplexVideoActivity.java
index c633d52..bb54e30 100644
--- a/app/src/main/java/com/example/ivdemo/DuplexVideoActivity.java
+++ b/app/src/main/java/com/example/ivdemo/DuplexVideoActivity.java
@@ -23,6 +23,7 @@ protected void initWidget() {
         mTextureView.setSurfaceTextureListener(this);
 
         mRemoteView = findViewById(R.id.surfaceView_duplex);
+        mRemoteView.setSurfaceTextureListener(this);
         mPlayer = new SimplePlayer();
         mCameraRecorder = new CameraRecorder();
     }