Android imitation WeChat video floating window effect

/**
    * Define the callback for service binding and enable the video call service connection
    */
  private ServiceConnection mVideoCallServiceConnection = new ServiceConnection() {

    @Override
    public void onServiceConnected(ComponentName name, IBinder service) {
      // Obtain the operation object of the service       binder = () service;
      ();
    }

    @Override
    public void onServiceDisconnected(ComponentName name) {

    }
  };

/*
    * Turn on the floating video service
    */
  private void startVideoService() {
    //Minimize Activity    moveTaskToBack(true);//Put activity in the background    //Open the service display floating box    Intent serviceVideoIntent = new Intent(this, );
    mServiceBound = bindService(serviceVideoIntent, mVideoCallServiceConnection, Context.BIND_AUTO_CREATE);//Binding Service  }

//Unbind and destroy related content in onDestroy() and onReStart()if (mServiceBound) {
      unbindService(mVideoCallServiceConnection);//Unbind      mServiceBound = false;
    }

/**
  * Video floating window service
  */
public class FloatWindowService extends Service implements  {
  private WindowManager mWindowManager;
  private  wmParams;
  private LayoutInflater inflater;
  //Floating layout view  private View mFloatingLayout;
  //Container parent layout  private View mMainVIew;
 
  //The coordinates of the start touch, the coordinates when moving (relative to the coordinates in the upper left corner of the screen)  private int mTouchStartX, mTouchStartY, mTouchCurrentX, mTouchCurrentY;
  //The coordinates at the beginning and the coordinates at the end (relative to the coordinates of the own control)  private int mStartX, mStartY, mStopX, mStopY;
  //Judge whether the floating window is moving, make a mark here to prevent the click event from being triggered after releasing the move  private boolean isMove;
 
 
  @Override
  public void onCreate() {
    ();
    initWindow();//Set basic parameters of the floating window (position, width, height, etc.) 
  }
 
  @Nullable
  @Override
  public IBinder onBind(Intent intent) {
    currentBigUserId = ("localUserId");
    remoteUserId = ("remoteUserId");
    initFloating();// Handling of floating box click event    return new MyBinder();
  }
 
  public class MyBinder extends Binder {
    public FloatWindowService getService() {
      return ;
    }
  }
 
 
  @Override
  public int onStartCommand(Intent intent, int flags, int startId) {
    return (intent, flags, startId);
  }
 
  @Override
  public void onDestroy() {
    ();
    if (mFloatingLayout != null) {
      // Remove the floating window      (mFloatingLayout);
      mFloatingLayout = null;
    }
  }
 
  /**
    * Set basic parameters of the floating frame (position, width, height, etc.)
    */
  private void initWindow() {
    mWindowManager = (WindowManager) getApplicationContext().getSystemService(Context.WINDOW_SERVICE);
    //Set the parameters of the floating window    wmParams = getParams();
    // The floating window is displayed by default with the upper left corner as the starting coordinate     =  | ;
    //The start position of the floating window, because it is set to start from the upper right corner, so the upper left corner of the screen is x=the maximum screen value; y=0     = 10;
     = 120;
    //Get the container and use this inflater to obtain the floating window control    inflater = (getApplicationContext());
    // Get the layout where the floating window view is located    mFloatingLayout = (.dlg_floatview, null);
    // Add a view of the floating window    (mFloatingLayout, wmParams);
  }
 
 
  private  getParams() {
    wmParams = new ();
    if (.SDK_INT >= Build.VERSION_CODES.O) {
       = .TYPE_APPLICATION_OVERLAY;
    } else {
       = .TYPE_PHONE;
    }
    //Settings can be displayed on the status bar     = .FLAG_NOT_FOCUSABLE | .FLAG_NOT_TOUCH_MODAL |
        .FLAG_LAYOUT_IN_SCREEN | .FLAG_LAYOUT_INSET_DECOR |
        .FLAG_WATCH_OUTSIDE_TOUCH;
 
    //Set the length and width data of the floating window     = .WRAP_CONTENT;
     = .WRAP_CONTENT;
    return wmParams;
  }
 
  //Load the remote video: Do ​​this to operate on the contents in the floating window  private void initFloating() {
    //Load the subview into the floating window View    mMainView = (.trtc_video_view_layout_float);//Floating window parent layout    View mChildView = ();//The subview loaded into the floating window, this VIew comes from the View that needs to be loaded in the Activity that has been turned from heaven.    (mChildView);//Put the Viewadd that needs to be suspended into mTXCloudVideoView    
    //The floating frame touch event, set the floating frame to drag    (this::onTouch);
    //Floating box click event    (new () {
      @Override
      public void onClick(View v) {
        //Implement here to click back to Activity        Intent intent = 
        new Intent(, );// Jumping from the service to the activity will wake the activity from the background, so the activity will go onReStart()        (Intent.FLAG_ACTIVITY_NEW_TASK);//Redirecting from Service to RTCActivity requires Intent.FLAG_ACTIVITY_NEW_TASK, otherwise it will crash        startActivity(intent);
      }
    });
 
  }
 
  //Touch Event  @Override
  public boolean onTouch(View v, MotionEvent event) {
    int action = ();
    switch (action) {
      case MotionEvent.ACTION_DOWN:
        isMove = false;
        mTouchStartX = (int) ();
        mTouchStartY = (int) ();
        mStartX = (int) ();
        mStartY = (int) ();
        break;
      case MotionEvent.ACTION_MOVE:
        mTouchCurrentX = (int) ();
        mTouchCurrentY = (int) ();
         += mTouchStartX - mTouchCurrentX;
         += mTouchCurrentY - mTouchStartY;
        ("FloatingListener() onTouch",mTouchCurrentX,mTouchStartX,mTouchCurrentY,mTouchStartY);
        (mFloatingLayout, wmParams);
 
        mTouchStartX = mTouchCurrentX;
        mTouchStartY = mTouchCurrentY;
        break;
      case MotionEvent.ACTION_UP:
        mStopX = (int) ();
        mStopY = (int) ();
        if ((mStartX - mStopX) >= 1 || (mStartY - mStopY) >= 1) {
          isMove = true;
        }
        break;
      default:
        break;
    }
    //If it is a mobile event, the OnClick event will not be triggered, so as to prevent the click event from being formed when moving.    return isMove;
  }
 
}