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<String, Object> map = (Map<String, Object>) 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。

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