Merge pull request #189 from junhuhdev/patch-1

Fix remote peer video is blank

Author: cloudwebrtc

lib/src/call_sample/call_sample.dart

@@ -116,10 +116,12 @@ class _CallSampleState extends State<CallSample> {
 
     _signaling?.onLocalStream = ((stream) {
       _localRenderer.srcObject = stream;
+      setState(() {});
     });
 
     _signaling?.onAddRemoteStream = ((_, stream) {
       _remoteRenderer.srcObject = stream;
+      setState(() {});
     });
 
     _signaling?.onRemoveRemoteStream = ((_, stream) {