title: handler.postdelayed is not working
body: <p><code>handler.postdelayed</code> is not working, application has stopped - please help</p>
  
  <pre><code> protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      txt= (TextView)findViewById(R.id.texte);
      handler.postDelayed(new Runnable() {
          @Override
          public void run() {
              txt.setText(String.valueOf(1020));
          }
      },5000);
  </code></pre>