How to use textview.getLayout()? It returns null

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You are calling it too early, thats why it is returning null

Try this

  ViewTreeObserver vto = mytextview.getViewTreeObserver();
    vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
        @Override
        public void onGlobalLayout() {
           Layout layout = mytextview.getLayout();  
        }
    });

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