title: Set string as button id programmatically
body: <p>I have buttons with ids button1, button2, button3, button4,...</p>
  
  <p>Is there a way to call button using string? For example:</p>
  
  <pre><code>    int buttonNumber = 1;
      String buttonId= "button" + buttonNumber;
      findViewById(R.id.buttonId).setBackgroundResource(R.drawable.image);
  </code></pre>