Android查看联系人简单记录

简单实现打印联系人信息，可以作为插入联系人的基础和主要代码块，作为个人记录的小逻辑

 package com.lgqrlchinese.contactstest;

 import android.Manifest;
 import android.content.pm.PackageManager;
 import android.database.Cursor;
 import android.net.Uri;
 import android.provider.ContactsContract;
 import android.support.v4.app.ActivityCompat;
 import android.support.v4.content.ContextCompat;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
 import android.view.View;
 import android.widget.Toast;

 public class MainActivity extends AppCompatActivity {

     //动态获取权限
     static final String[] PERMISSION = new String[]{
             Manifest.permission.READ_CONTACTS,
     };

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

     public void click(View view) {
         Uri uri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
         Cursor query = getContentResolver().query(uri, null, null, null, null);
         if (query != null) {
             while (query.moveToNext()) {
                 String displayName = query.getString(query.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
                 String displayNumber = query.getString(query.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
                 System.out.println(displayName + ":" + displayNumber);
             }
         }

     }

     //动态获取权限
     public void MyPermission() {
         if (ContextCompat.checkSelfPermission(this, Manifest.permission.READ_CONTACTS) != PackageManager.PERMISSION_GRANTED) {
             //Android 6.0申请权限
             ActivityCompat.requestPermissions(this, PERMISSION, 1);
         } else {
             Toast.makeText(this, "成功", Toast.LENGTH_SHORT).show();
         }
     }
 }