title: What does AdapterView<?> mean in the OnitemClick() Method? What is the use of other parameters in it?
body: <pre><code>gridview.setOnItemClickListener(new OnItemClickListener() {
          public void onItemClick(AdapterView&lt;?&gt; parent, View v, int position, long id) {
              Toast.makeText(HelloGridView.this, "" + position, Toast.LENGTH_SHORT).show();
          }
      });
  </code></pre>