Android ContentProvider（获取手机联系人）

代码实现:

权限：

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

代码实现:

1、联系人
<1>content://com.android.contacts/raw_contacts（获得联系人的id，姓名）
<2>content://com.android.contacts/raw_contacts/"+id+"/data（根据联系人的id获得联系人的信息）

package com.example.g160628_android_26_contentprovider2;

import android.content.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;

public class MainActivity extends AppCompatActivity {

    private ContentResolver cr;

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

    public void getContacts(View view){
        //content://com.android.contacts/raw_contacts 获取系统的路径
         Uri uri=Uri.parse("content://com.android.contacts/raw_contacts");
         Cursor cursor=cr.query(uri,null,null,null,null);
        while (cursor.moveToNext()){
            //id
            int  _id=cursor.getInt(cursor.getColumnIndex("_id"));
            //联系人 姓名
            String display_name=cursor.getString(cursor.getColumnIndex("display_name"));
            Log.i("test",""+_id+"    :"+display_name);
            Uri uri1=Uri.parse("content://com.android.contacts/raw_contacts/"+_id+"/data");
            Cursor cursor1=cr.query(uri1,null,null,null,null);
            while (cursor1.moveToNext()){
                String mimetype=cursor1.getString(cursor1.getColumnIndex("mimetype"));
                String data1=cursor1.getString(cursor1.getColumnIndex("data1"));
                //判断类型
                if("vnd.android.cursor.item/phone_v2".equals(mimetype)){
                    Log.i("test","类型"+mimetype+":       "+data1);
                }
            }
        }
    }
}