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();
        }
    }
}