Getting 0 Value for both X and Y Coordinate of view(Imagebutton) in android

Question

I want to get X and Y Point of View(ImageButton).

When I try to find X and Y on Click event with below code I get proper X and Y coordinate for View.

Answer 1

post() gets called after setContentView().

Method setContentView() ends up in callingViewGroup.addView() of the top view, andaddView() call always triggers requestLayout(). In turn, requestLayout() posts a task to the main thread to be executed later. This task will execute measure and layout on the view hierarchy. Now if you post another task it will be put into the queue afterlayout task and, as the result, always executed aftermeasure and layout happen. Thus you will always have valid sizes.

Taken from https://stackoverflow.com/a/21938380

button.post(new Runnable() {
    @Override
    public void run() {
        // get coordinates
    }
});

Answer 2

Two options:

• Implementing your logics in onResume.

• Using ViewTreeObserver.

  final ViewTreeObserver vto = findViewById(R.id.YOUR_VIEW_ID).getViewTreeObserver(); 
  vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() { 
      @Override 
      public void onGlobalLayout() { 
          vto.removeOnGlobalLayoutListener(this);  
  
          // Get X, Y of the ImageView here
      } 
  });
  

Answer 3

the reason the returned value is zero is because the ImageButton is not yet created if you call this method in 'onCreate()'. You can use the ViewTreeObserver to get the position:

ViewTreeObserver vto = imagebutton.getViewTreeObserver(); 
vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() { 
    @Override 
    public void onGlobalLayout() { 
        this.imagebutton.getViewTreeObserver().removeGlobalOnLayoutListener(this); 

        int[] posXY = new int[2];

        imagebutton.getLocationOnScreen(posXY);
        x = posXY[0];
        y = posXY[1];

        Log.d("X and Y Point", x + " " + y);  

    } 
});

Happy coding

Answer 4

Get the values on onWindowFocusChanged().

@Override
public void onWindowFocusChanged(boolean hasFocus) {
    super.onWindowFocusChanged(hasFocus);

    ImageButton imagebutton = (ImageButton) findViewById(R.id.imagebutton);
    int[] posXY = new int[2];
    imagebutton.getLocationInWindow(posXY);
    int x = posXY[0];
    int y = posXY[1];

    Log.d("X and Y Point", x + " " + y);
}