title: Change the text color of an unidentified radio button
body: <p>I have a radio group with 4 radio buttons. I use this code :</p>
  
  <pre><code>int radioButtonID = radioGroup.getCheckedRadioButtonId();
  View checkedRadioButton = radioGroup.findViewById(radioButtonID);
  int idx = radioGroup.indexOfChild(checkedRadioButton);
  </code></pre>
  
  <p>To retrieve the index of the checked radio button.</p>
  
  <p>The problem is that i want to change the text color of the checked radio button, while i dont know the specific radio button each time. so: <code>checkedRadioButton.setTextColor(color);</code> 
  shows me an error that i need to 'Add a qualifier', which basicaly is showing me that i should use a specific radio button to call that method, like:</p>
  
  <p><code>radioButtonAns1.setTextColor(color);</code></p>
  
  <p>I would like if someone would also explain why i have that error and if there is a solution on that. The only method i can call is <code>.setBackgroundColor()</code> which looks ugly.</p>
  
  <p>Thanks in advance!</p>