private void updateRemoteDisplay()

in AliRTC2.5/Android/RtcSample/app/src/main/java/com/aliyun/rtcdemo/activity/AliRtcChatActivity.java [233:283]
38 lines of code
7 McCabe index (conditional complexity)

    private void updateRemoteDisplay(String uid, AliRtcEngine.AliRtcAudioTrack at, AliRtcEngine.AliRtcVideoTrack vt) {
        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                if (null == mAliRtcEngine) {
                    return;
                }
                AliRtcRemoteUserInfo remoteUserInfo = mAliRtcEngine.getUserInfo(uid);
                // 如果没有，说明已经退出了或者不存在。则不需要添加，并且删除
                if (remoteUserInfo == null) {
                    // remote user exit room
                    Log.e(TAG, "updateRemoteDisplay remoteUserInfo = null, uid = " + uid);
                    return;
                }
                //change
                AliRtcEngine.AliRtcVideoCanvas cameraCanvas = remoteUserInfo.getCameraCanvas();
                AliRtcEngine.AliRtcVideoCanvas screenCanvas = remoteUserInfo.getScreenCanvas();
                //视频情况
                if (vt == AliRtcVideoTrackNo) {
                    //没有视频流
                    cameraCanvas = null;
                    screenCanvas = null;
                } else if (vt == AliRtcVideoTrackCamera) {
                    //相机流
                    screenCanvas = null;
                    cameraCanvas = createCanvasIfNull(cameraCanvas);
                    //SDK内部提供进行播放的view
                    mAliRtcEngine.setRemoteViewConfig(cameraCanvas, uid, AliRtcVideoTrackCamera);
                } else if (vt == AliRtcVideoTrackScreen) {
                    //屏幕流
                    cameraCanvas = null;
                    screenCanvas = createCanvasIfNull(screenCanvas);
                    //SDK内部提供进行播放的view
                    mAliRtcEngine.setRemoteViewConfig(screenCanvas, uid, AliRtcVideoTrackScreen);
                } else if (vt == AliRtcVideoTrackBoth) {
                    //多流
                    cameraCanvas = createCanvasIfNull(cameraCanvas);
                    //SDK内部提供进行播放的view
                    mAliRtcEngine.setRemoteViewConfig(cameraCanvas, uid, AliRtcVideoTrackCamera);
                    screenCanvas = createCanvasIfNull(screenCanvas);
                    //SDK内部提供进行播放的view
                    mAliRtcEngine.setRemoteViewConfig(screenCanvas, uid, AliRtcVideoTrackScreen);
                } else {
                    return;
                }
                ChartUserBean chartUserBean = convertRemoteUserInfo(remoteUserInfo, cameraCanvas, screenCanvas);
                mUserListAdapter.updateData(chartUserBean, true);

            }
        });
    }