setOnItemClickListener

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.WindowManager;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;

public class MainActivity extends Activity {
 public static final String TAG = "MainActivity";
 GridView maingv;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  // TODO Auto-generated method stub
  super.onCreate(savedInstanceState);
  getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
  setContentView(R.layout.mainactivity);
  maingv = (GridView) this.findViewById(R.id.gv_all);
  //给gridview设置数据适配器
  maingv.setAdapter(new MainGridViewAdapter(this));
  maingv.setOnItemClickListener(new MainItemClickListener());
  

 }
 
 private class MainItemClickListener implements OnItemClickListener{
        /**
         * @param parent 代表当前的gridview
         * @param 代表点击的item
         * @param 当前点击的item在适配中的位置
         * @param id The row id of the item that was clicked.
         */
  public void onItemClick(AdapterView parent, View view, int position,
    long id) {
   // TODO Auto-generated method stub
   //Log.i(TAG, "position"+ position);
   switch (position) {
   case 0:
    Intent intent = new Intent(MainActivity.this,LostProtectedActivity.class);
    startActivity(intent);
    break;
   }
   
   
   
   
  }
  
 }
 
}