title: Appending a TextView
body: <p>I have an app which at current will on the press of a button eg. the number 1 button change a text view to have the number 1 in it. What i need to do is append the view so that say when the number 3 is pressed the text view will say 13 instea of just 3. Here is the switch statement i'm using to handle the button presses.</p>
  
  <pre><code>@Override
  public void onClick(View c) {
  
      switch (c.getId()) 
      {
          case R.id.keypad_1:
              TextView prs1 = (TextView) findViewById(R.id.diff);
              prs1.setText("1");
  
      }
  
  }
  </code></pre>