读取手机联系人信息

清单文件

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

MainActivity.java代码

import android.database.Cursor;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.support.v7.app.AppCompatActivity;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import java.util.ArrayList;

import qchat.deqiang.org.oicq.R;

/**
 * @author 王德强
 * @function read system contacts
 */

public class Main3Activity extends AppCompatActivity {

   ListView contactView;
    ArrayAdapter<String> adapter;
    ArrayList contactList = new ArrayList<String>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main3);
        contactView = (ListView) findViewById(R.id.contacts_view);
        adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,contactList);
        contactView.setAdapter(adapter);
        readContacts();
    }

    private void readContacts() {
        Cursor cursor = null;
        try {
            cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,null,null,null,null,null);
            while (cursor.moveToNext()){
                String displayName = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
                String number = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
                contactList.add(displayName+"
"+number);
            }
        }catch (Exception e){
            e.printStackTrace();
        }finally {
            if(cursor!=null){
                cursor.close();
            }
        }
    }

}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
   >
    <ListView
        android:id="@+id/contacts_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    </ListView>

</LinearLayout>