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POView's getWidth() and getHeight() returns 0
 

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    <p>I am creating all of the elements in my android project dynamically. I am trying to get the width and height of a button so that I can rotate that button around. I am just trying to learn how to work with the android language. However, it returns 0. </p> <p>I did some research and I saw that it needs to be done somewhere other than in the <code>onCreate()</code> method. If someone can give me an example of how to do it, that would be great. </p> <p>Here is my current code:</p> <pre><code>package com.animation; import android.app.Activity; import android.os.Bundle; import android.view.animation.Animation; import android.view.animation.LinearInterpolator; import android.view.animation.RotateAnimation; import android.widget.Button; import android.widget.LinearLayout; public class AnimateScreen extends Activity { //Called when the activity is first created. @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); LinearLayout ll = new LinearLayout(this); LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT); layoutParams.setMargins(30, 20, 30, 0); Button bt = new Button(this); bt.setText(String.valueOf(bt.getWidth())); RotateAnimation ra = new RotateAnimation(0,360,bt.getWidth() / 2,bt.getHeight() / 2); ra.setDuration(3000L); ra.setRepeatMode(Animation.RESTART); ra.setRepeatCount(Animation.INFINITE); ra.setInterpolator(new LinearInterpolator()); bt.startAnimation(ra); ll.addView(bt,layoutParams); setContentView(ll); } </code></pre> <p>Any help is appreciated.</p>
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