getLocationInWindow not change after change LayoutParams

Question

I have a view like this:

<View 
    android:layout_width="50dp"
    android:layout_height="50dp"/>

I get the global position twice. Before changing the view size and After changing the view size.

CODE:

private void getViewPosition(View view){
    int[] firstPosition = new int[2];
    int[] secondPosition = new int[2];
    RelativeLayoutParams lp = (RelativeLayoutParams)view.getLayoutParams();

    view.getLocationInWindow(firstPosition);

    lp.width = 150;
    lp.height = 150;
    view.setLayoutParams(lp);

    view.getLocationInWindow(secondPosition);
    Log.i("FirstLocation", firstPosition[0]);
    Log.i("SecondLocation", secondPosition[0];
}

When I see the logs, the location is the same.

What is wrong?

I think you have to change with `view.setLayoutParams(view);` this line to `view.setLayoutParams(lp);`. — Dhruv, Jul 25 '19 at 09:32

score 1 · Accepted Answer · answered Jul 25 '19 at 09:46

Basically, you're not waiting for the UI to get updated and for the layout constraints to be implemented. Try posting it from Handler and you'll get your expected results.

private void getViewPosition(final View view){
    final int[] firstPosition = new int[2];
    final int[] secondPosition = new int[2];
    ConstraintLayout.LayoutParams lp = (ConstraintLayout.LayoutParams )view.getLayoutParams();

    view.getLocationInWindow(firstPosition);

    lp.width = 150;
    lp.height = 150;
    view.setLayoutParams(lp);

    new Handler().post(new Runnable() {
        @Override
        public void run() {
            view.getLocationInWindow(secondPosition);
            Log.i("FirstLocation", String.valueOf(firstPosition[0]));
            Log.i("SecondLocation", String.valueOf(secondPosition[0]));
        }
    });
}

getLocationInWindow not change after change LayoutParams

1 Answers1