Android ContentResolver读取手机系统数据

1.新建布局文件：

xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_main"
    android:layout_width="match_parent" android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context="com.asus.android_25_contentprovider.MainActivity">

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="获取联系人"
        android:onClick="getContacts"
        />

    <ListView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/lv_main_listview"
        >
    ListView>

LinearLayout>

2.适配器布局文件

xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/tv_items_id"
        android:layout_weight="1"
        />
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/tv_items_name"
        android:layout_weight="1"
        />
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/tv_items_tel"
        android:layout_weight="1"
        />

LinearLayout>

3.MainActivity：

package com.asus.android_25_contentprovider;

import android.content.ContentResolver;
import android.database.Cursor;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.SimpleCursorAdapter;

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

public class MainActivity extends AppCompatActivity {

    private ContentResolver cr;
    private Cursor cursor;
    private Cursor cursorData;
    private List> list=new ArrayList<>();
    private ListView lv_main_listview;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        cr = getContentResolver();

        lv_main_listview = (ListView) findViewById(R.id.lv_main_listview);

    }

    public void getContacts(View view){
        //获取联系人raw_contacts
        Uri uri=Uri.parse("content://com.android.contacts/raw_contacts");
        cursor = cr.query(uri,null,null,null,null);
        while(cursor.moveToNext()){
            int id= cursor.getInt(cursor.getColumnIndex("_id"));
            String name= cursor.getString(cursor.getColumnIndex("display_name"));
            Log.i("test",id+" "+name);

            Uri uriData=Uri.parse("content://com.android.contacts/raw_contacts/"+id+"/data");
            cursorData = cr.query(uriData,null,null,null,null);
            while(cursorData.moveToNext()){
                String tel= cursorData.getString(cursorData.getColumnIndex("data1"));
                String type= cursorData.getString(cursorData.getColumnIndex("mimetype"));
                if("vnd.android.cursor.item/phone_v2".equals(type)){

                    Map map=new HashMap();
                    map.put("id",id);
                    map.put("name",name);
                    map.put("tel",tel);
                    list.add(map);
                    Log.i("test","        "+tel+":"+type);
                }
            }
        }
        SimpleAdapter simpleAdapter=new SimpleAdapter(this,list,R.layout.items_listview,new String[]{"id","name","tel"},new int[]{R.id.tv_items_id,R.id.tv_items_name,R.id.tv_items_tel});
        lv_main_listview.setAdapter(simpleAdapter);
    }
}

4.因为是手机系统数据，所以要在AndroidManifest.xml中设置权限

<uses-permission android:name="android.permission.READ_CONTACTS">uses-permission>