title: Increase a char value by one
body: <p>I have an app with an <code>EditText</code> and a button named "forward". All I want is just when I type "a" in the <code>EditText</code> and click the button, the word "b" to be typed in the <code>EditText</code>, "c" if pressed again and so on. I have tried:</p>
  
  <pre><code>value = edt.getText();
  edt.setText(value + 1);
  </code></pre>
  
  <p>But that of course will print the initial string followed by the number "1". Any ideas? Thanks a lot</p>