[Android] Fix problems with data channel testing.

cloudwebrtc · cloudwebrtc · commit 3cf1aaad015a · 2019-07-26T08:09:29.000+08:00
diff --git a/android/src/main/java/com/cloudwebrtc/webrtc/FlutterWebRTCPlugin.java b/android/src/main/java/com/cloudwebrtc/webrtc/FlutterWebRTCPlugin.java
@@ -234,6 +234,7 @@ public void onMethodCall(MethodCall call, Result notSafeResult) {
             String peerConnectionId = call.argument("peerConnectionId");
             int dataChannelId = call.argument("dataChannelId");
             dataChannelClose(peerConnectionId, dataChannelId);
+            result.success(null);
         } else if (call.method.equals("streamDispose")) {
             String streamId = call.argument("streamId");
             mediaStreamRelease(streamId);
diff --git a/android/src/main/java/com/cloudwebrtc/webrtc/PeerConnectionObserver.java b/android/src/main/java/com/cloudwebrtc/webrtc/PeerConnectionObserver.java
@@ -77,7 +77,6 @@ void setPeerConnection(PeerConnection peerConnection) {
     }
 
     void close() {
-        eventChannel.setStreamHandler(null);
         peerConnection.close();
         remoteStreams.clear();
         remoteTracks.clear();
@@ -86,6 +85,7 @@ void close() {
     void  dispose(){
         this.close();
         peerConnection.dispose();
+        eventChannel.setStreamHandler(null);
     }
 
     void createDataChannel(String label, ConstraintsMap config, Result result) {
