通过系统自带的内容提供器（ContentResolver）读取系统的通讯录，并设置点击事件

1、布局

主布局只有一个listview，用来显示电话簿的名字和手机号码

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="lpc.com.project1722.MainActivity">
    <ListView
        android:id="@+id/list"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    </ListView>
</RelativeLayout>

布局2

listview的内容布局，只有两个TextView

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">
    <ImageView
        android:background="#EE00"
        android:layout_width="match_parent"
        android:layout_height="1dp" />
    <TextView
        android:id="@+id/name"
        android:textSize="25sp"
        android:text="我是名字"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
    <TextView
        android:id="@+id/number"
        android:textSize="20sp"
        android:text="我是号码"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
    <ImageView
        android:background="#EE00"
        android:layout_width="match_parent"
        android:layout_height="1dp" />
</LinearLayout>

2、java文件

package lpc.com.project1722;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.support.v7.app.AppCompatActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
    private ListView list;
    private ArrayList<String> nameList = new ArrayList<String>();
    private ArrayList<String> numberList = new ArrayList<String>();
    myAdapter adapter = new myAdapter();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        list = (ListView) findViewById(R.id.list);
        readContacts();
        list.setAdapter(adapter);
        list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:"+ numberList.get(position)));
                startActivity(intent);
            }
        });
    }
    private void readContacts() {
        Cursor cursor = null;
        try{
            cursor = getContentResolver().query(
                    ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
                    null,null,null,"sort_key asc");
            //sort_key asc 这个排序是按照数字，A到Z的顺序排序
            //last_time_contacted 最后一次的通话时间，此时为根据通话时间排序
            while (cursor.moveToNext()){
                String displayName = cursor.getString(cursor.getColumnIndex(
                   ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
                nameList.add(displayName);
                String number = cursor.getString(cursor.getColumnIndex(
                        ContactsContract.CommonDataKinds.Phone.NUMBER));
                numberList.add(number);
            }
        }catch (Exception e){
            e.printStackTrace();
        }finally {
            cursor.close();
        }
    }
    class myAdapter extends BaseAdapter{
        public myAdapter() {
        }
        @Override
        public int getCount() {
            return nameList.size();
        }
        @Override
        public Object getItem(int position) {
            return position;
        }
        @Override
        public long getItemId(int position) {
            return position;
        }
        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            ViewHolder viewHolder;
            View view;
                view = LayoutInflater.from(getApplicationContext()).inflate(R.layout.list_item, null);
                viewHolder = new ViewHolder();
                viewHolder.name = (TextView) view.findViewById(R.id.name);
                viewHolder.number = (TextView) view.findViewById(R.id.number);
                viewHolder.name.setText(nameList.get(position));
                viewHolder.number.setText(numberList.get(position));
                return view;
        }
        class ViewHolder {
            public TextView name;
            public TextView number;
        }
    }
}

3、manifest设置

基本上是默认设置，只添加了一个读取 系统联系人的权限

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="lpc.com.project1722">
    <uses-permission android:name="android.permission.READ_CONTACTS"/>
    <uses-permission android:name="android.permission.CALL_PHONE"/>
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
</manifest>

来自为知笔记(Wiz)