Android简单获得通讯录

ContactActivity：

package com.example.practice5_service;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import com.example.adapter.simpleAdapter;

import android.app.Activity;
import android.content.ContentResolver;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.CallLog;
import android.support.v4.widget.SimpleCursorAdapter;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ListAdapter;
import android.widget.ListView;

public class ContactActivity extends Activity {
    private ListView phone_listview;
    private List<Map<String,String>> addressList;
    private simpleAdapter adapter;
    
    private ListAdapter listAdaper;
    private ContentResolver resolver;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_contact);
        initView();
        loadData();
    }

    public void initView() {
        phone_listview=(ListView) findViewById(R.id.phone_listview);
        addressList=new ArrayList<Map<String,String>>();
        adapter=new simpleAdapter(this,addressList,R.layout.phone_message,
                new String[]{"id","name","phoneNum"},
                new int[]{R.id.phone_id,R.id.name_phone,R.id.num_phone});
        
        phone_listview.setAdapter(adapter);
    }
    public void loadData(){
        //内容接受者取得内容提供者中的数据
        resolver=super.getContentResolver();//获得ContentResolver,有增删改查的方法        
        Cursor result=resolver.query(CallLog.Calls.CONTENT_URI, null, null, null, null);//获得CallLog.CONTENT_URI对应的信息
        while(result.moveToNext()){
            Map<String,String> row=new HashMap<String, String>();
            int id=result.getInt(result.getColumnIndex(CallLog.Calls._ID));
            String name=result.getString(result.getColumnIndex(CallLog.Calls.CACHED_NAME));
            String phoneNum=result.getString(result.getColumnIndex(CallLog.Calls.NUMBER));
            row.put("id", String.valueOf(id));
            row.put("name", name);
            row.put("phoneNum", phoneNum);
            addressList.add(row);
        }
        result.close();
        adapter.notifyDataSetChanged();
    }
}

simpleAdapter：

package com.example.adapter;

import java.util.List;
import java.util.Map;

import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.SimpleAdapter;

public class simpleAdapter extends SimpleAdapter {

    public simpleAdapter(Context context, List<? extends Map<String, ?>> data,
            int resource, String[] from, int[] to) {
        super(context, data, resource, from, to);
        // TODO Auto-generated constructor stub
    }
}