最近需要实现一个手机通讯录的快速索引功能。根据姓名首字母快速索引功能，下面通过本篇文章给大家介绍Android手机联系人快速索引(手机通讯录)的相关代码，需要的朋友参考下
最近需要实现一个手机通讯录的快速索引功能。根据姓名首字母快速索引功能。下面是一个手机联系人快速索引的效果，总体来说代码不算难，拼音转换的地方略有复杂。下面上源码：源码中有注释。
下面是效果图：
MainActivity：
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;
/**
* 这里是主布局
* @author lxd
*
*/
public class MainActivity extends Activity {
private ListView lv_main;
private FriendAdapter adapter;
private List<Friend> data = new ArrayList<Friend>();
private QuickIndexView qiv_main;
private TextView tv_main_word;
private Handler handler = new Handler(){
public void handleMessage(android.os.Message msg) {
//隐藏word
tv_main_word.setVisibility(View.GONE);
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
lv_main = (ListView) findViewById(R.id.lv_main);
qiv_main = (QuickIndexView) findViewById(R.id.qiv_main);
tv_main_word = (TextView) findViewById(R.id.tv_main_word);
//设置监听
qiv_main.setOnIndexChangedListener(new QuickIndexView.OnIndexChangedListener() {
@Override
public void onIndexChanged(String word) {
tv_main_word.setText(word);
tv_main_word.setVisibility(View.VISIBLE);
//handler.removeMessages(1);
//移除未处理的消息
handler.removeCallbacksAndMessages(null);
//发延迟消息
handler.sendEmptyMessageDelayed(1, 2000);
//滑动listview
//查找对应的item
for(int i=0;i<data.size();i++) {
String fWord = data.get(i).getPinyin().substring(0, 1);
if(word.equals(fWord)) {
lv_main.setSelection(i);
return;
}
}
}
@Override
public void onUp() {
//tv_main_word.setVisibility(View.GONE);
}
});
//显示列表
adapter = new FriendAdapter();
initData();
lv_main.setAdapter(adapter);
//lv_main.setSelection(5);
}
private void initData() {
data.add(new Friend("张三"));
data.add(new Friend("杨九"));
data.add(new Friend("胡继群"));
data.add(new Friend("刘畅"));
data.add(new Friend("钟泽兴"));
data.add(new Friend("尹革新"));
data.add(new Friend("安传鑫"));
data.add(new Friend("张骞壬"));
data.add(new Friend("温松"));
data.add(new Friend("李凤秋"));
data.add(new Friend("刘甫"));
data.add(new Friend("娄全超"));
data.add(new Friend("张猛"));
data.add(new Friend("王英杰"));
data.add(new Friend("李振南"));
data.add(new Friend("孙仁政"));
data.add(new Friend("唐春雷"));
data.add(new Friend("牛鹏伟"));
data.add(new Friend("姜宇航"));
data.add(new Friend("刘挺"));
data.add(new Friend("张洪瑞"));
data.add(new Friend("张建忠"));
data.add(new Friend("侯亚帅"));
data.add(new Friend("刘帅"));
data.add(new Friend("乔竞飞"));
data.add(new Friend("徐雨健"));
data.add(new Friend("吴亮"));
data.add(new Friend("王兆霖"));
data.add(new Friend("阿三"));
Collections.sort(data);
}
class FriendAdapter extends BaseAdapter {
@Override
public int getCount() {
return data.size();
}
@Override
public Object getItem(int position) {
return data.get(position);
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
if(convertView==null) {
holder = new ViewHolder();
convertView = View.inflate(MainActivity.this, R.layout.item_main, null);
holder.wordTV = (TextView) convertView.findViewById(R.id.tv_item_word);
holder.nameTV = (TextView) convertView.findViewById(R.id.tv_item_name);
convertView.setTag(holder);//***********?
} else {
holder = (ViewHolder) convertView.getTag();
}
Friend friend = data.get(position);
String word = friend.getPinyin().substring(0, 1);
holder.wordTV.setText(word);
holder.nameTV.setText(friend.getName());
//下标为0的显示
if(position==0) {
holder.wordTV.setVisibility(View.VISIBLE);
} else {
//取出上一个friend, 并得到的第一个word
String preWord = data.get(position-1).getPinyin().substring(0, 1);
//判断是否于当前行的word是否相同
//如果相同, 隐藏
if(word.equals(preWord)) {
holder.wordTV.setVisibility(View.GONE);
} else {
//如果不同, 显示
holder.wordTV.setVisibility(View.VISIBLE);
}
}
return convertView;
}
class ViewHolder {
public TextView wordTV;
public TextView nameTV;
}
}
}
