What is the AdapterView<?> means in the OnitemClick() Method?What is the use of other parameters in it?
<pre>

gridview.setOnItemClickListener(new OnItemClickListener() {
        public void onItemClick(AdapterView parent, View v, int position, long id) {
            Toast.makeText(HelloGridView.this, "" + position, Toast.LENGTH_SHORT).show();
        }
    });
</pre>
