android 通过getViewTypeCount 和 getItemViewType实现item加载不同布局

package cc.testlistview;
import java.util.ArrayList;
import java.util.HashMap;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.app.Activity;
/**
* Demo描述:
* 为ListView的Item设置不同的布局.
* 例如在该例子中ListView的第一个Item显示一张
* 图片,其余的Item都显示文字.
*
* 为了达到此目的需要重写BaseAdapter中的
* 1 getViewTypeCount()和getItemViewType(int position)方法.
*   1.1在getViewTypeCount中指定一共有几种不同的item
*      在此返回2即可.
*   1.2在getItemViewType(int position)中需要依据position的不同
*      返回不同的Type.
* 2 在getView()方法中针对不同的Type为Item设置布局
*   2.1得到当前位置(position)时的Type即代码:
*       currentType= getItemViewType(position);
*   2.2依据Type的不同为Item设置布局
*
* 参考资料:
* 1 http://blog.csdn.net/yueyue369/article/details/6115552 * 2 http://blog.sina.com.cn/s/blog_5da93c8f0100wx4v.html *   Thank you very much
*/
public class MainActivity extends Activity {
private ListView mListView;
private HashMap<String, Object> mHashMap;
private ArrayList<HashMap<String, Object>> mArrayList;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
init();
}
private void init(){
mArrayList=new ArrayList<HashMap<String,Object>>();
mListView=(ListView) findViewById(R.id.listview);
addDataForListView();
mListView.setAdapter
(new ListViewAdapter(MainActivity.this, mArrayList, R.layout.othersitem, new String []{"content"}, new int []{R.id.textView}));
mListView.setOnItemClickListener(new ItemClickListenerImpl());
}
private void addDataForListView(){
for (int i = 0; i < 30; i++) {
mHashMap=new HashMap<String, Object>();
mHashMap.put("content", "This is ---> "+i);
mArrayList.add(mHashMap);
}
}

private class ItemClickListenerImpl implements OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,long arg) {
System.out.println("OnItemClickListener position="+position);

}
}
}