android-内容提供器之读取联系人

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/wangxuewei111/article/details/45822787

1.activity_main.xml

<span style="font-size:18px;"><?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"
    android:orientation="vertical" >
    
	<ListView 
	    android:id="@+id/contacts_view"
	    android:layout_width="match_parent"
	    android:layout_height="match_parent"
	    ></ListView>    

</LinearLayout></span>

2.MainActivity.java

<span style="font-size:18px;">package com.king.contactstest;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class MainActivity extends Activity {
	
	ListView contactsView;
	
	ArrayAdapter<String> adapter;
	
	List<String> contactsList = new ArrayList<String>();
	
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		contactsView = (ListView) findViewById(R.id.contacts_view);
		adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,contactsList);
		contactsView.setAdapter(adapter);
		readContacts();
	}
	
	private void readContacts(){
		Cursor cursor = null;
		
		try {
			//查询联系人数据
			cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, null);
			while(cursor.moveToNext()){
				//获取联系人姓名
				String displayName = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
				//获取联系人手机号
				String number = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
				contactsList.add(displayName+"\n"+number);
			}
		} catch (Exception e) {
			e.printStackTrace();
		}finally{
			if(cursor != null){
				cursor.close();
			}
		}
		
	}

}</span>

3.AndroidManifest.xml

<span style="font-size:18px;"><?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.king.contactstest"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" />
    <!-- 声明权限 -->
   <strong> <uses-permission android:name="android.permission.READ_CONTACTS"/></strong>

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest></span>