android adapter例子,Android BaseAdapter应用实例

本文实例讲述了Android BaseAdapter的应用方法。分享给大家供大家参考，具体如下：

直接上源码

/**

* 生成联系人Items，即Items中包含如下控件

*

*/

public final class ViewHolder{

public ImageView callImg;//打电话的图标

public ImageView headImg;//头像

public TextView peopleName;//联系人名

public TextView peopleNumber;//联系人号码

}

public class MyAdapter extends BaseAdapter {

private LayoutInflater mInflater;

public MyAdapter(Context context) {

this.mInflater = LayoutInflater.from(context);

}

public int getCount() {

return listPeople.size();

}

public Object getItem(int arg0) {

return listPeople.get(arg0);

}

public long getItemId(int arg0) {

return arg0;//当初在看别人例子时，此处返回NUll，加载都没问题，但在ListView中的OnItemsClick事件中就报错了。

}

public View getView(final int position, View convertView,

ViewGroup parent) {

ViewHolder holder = null;

if (convertView == null) {

holder = new ViewHolder();

convertView = mInflater.inflate(R.layout.peopleinfo, null);

holder.callImg = (ImageView) convertView

.findViewById(R.id.callbtn);

holder.headImg = (ImageView) convertView

.findViewById(R.id.contactImage);

holder.peopleName = (TextView) convertView

.findViewById(R.id.peopleName);

holder.peopleNumber = (TextView) convertView

.findViewById(R.id.peopleNumber);

convertView.setTag(holder);

} else {

holder = (ViewHolder) convertView.getTag();

}

final String name = (String) listPeople.get(position).get(

"peopleName");

final String num = (String) listPeople.get(position).get(

"peopleNumber");

holder.peopleName.setText((String) listPeople.get(position).get(

"peopleName"));

holder.peopleNumber.setText((String) listPeople.get(position).get(

"peopleNumber"));

// holder.headImg.setImageResource(R.drawable.ic_menu_contact);

if(listPeople.get(position).get("peoplePhoto") != null){

holder.headImg.setImageBitmap((Bitmap)listPeople.get(position).get(

"peoplePhoto"));

}

holder.callImg.setImageResource(R.drawable.ic_dial_action_call);

holder.callImg.setOnClickListener(new View.OnClickListener() {

public void onClick(View v) {

//处理Items中控件的触发事件

}

});

return convertView;

}

}

/*

*应用BaseAdapter

*

*/

final MyAdapter myAdapter = new MyAdapter(this);

contacts.setAdapter(myAdapter);

contacts.setOnItemClickListener(new OnItemClickListener() {

@SuppressWarnings("unchecked")

public void onItemClick(AdapterView> arg0, View arg1, int arg2,

long arg3) {

Map map = (Map) myAdapter.getItem(arg2);//此处需要注意，

String peopleNumber = String.valueOf(map.get("peopleNumber"));

}

});

希望本文所述对大家Android程序设计有所帮助。