android_74_写联系人_21491877-优快云博客

本文介绍了一个简单的Android应用程序示例，该程序能够读取和写入手机联系人。通过使用Android提供的ContentResolver及ContentValues接口，文章详细展示了如何实现插入新联系人的功能，包括设置联系人姓名和电话号码。

效果:

清单:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.sg31.contactwriter"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" />

    // 注意权限 
    <uses-permission android:name="android.permission.WRITE_CONTACTS"/>
    <uses-permission android:name="android.permission.READ_CONTACTS"/>
    
    
    <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>

布局:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.sg31.contactwriter.MainActivity" >

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="插入联系人" 
        android:onClick="writeContactBtnClicked"
        />

</RelativeLayout>

代码:

package com.sg31.contactwriter;

import android.support.v7.app.ActionBarActivity;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;

public class MainActivity extends ActionBarActivity {

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

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		// Handle action bar item clicks here. The action bar will
		// automatically handle clicks on the Home/Up button, so long
		// as you specify a parent activity in AndroidManifest.xml.
		int id = item.getItemId();
		if (id == R.id.action_settings) {
			return true;
		}
		return super.onOptionsItemSelected(item);
	}

	public void writeContactBtnClicked(View v) {
		ContentResolver cr = getContentResolver();
		// 先查询raw_contacts表，获取最新联系人的主键，然后主键+1，就是要插入的联系人的id
		Cursor cursorContactId = cr.query(
				Uri.parse("content://com.android.contacts/raw_contacts"),
				new String[] { "_id" }, null, null, null);
		// 默认联系人id就是1
		int contact_id = 1;
		if (cursorContactId.moveToLast()) {
			// 拿到主键
			int _id = cursorContactId.getInt(0);
			// 主键+1，就是要插入的联系人id
			contact_id = ++_id;
		}

		ContentValues values = new ContentValues();
		values.put("contact_id", contact_id);
		// 把联系人id插入raw_contacts数据库
		cr.insert(Uri.parse("content://com.android.contacts/raw_contacts"),
				values);

		// 千万记得clear掉旧的数据
		values.clear();
		values.put("data1", "dnoyeb");
		values.put("mimetype", "vnd.android.cursor.item/name");
		values.put("raw_contact_id", contact_id);
		cr.insert(Uri.parse("content://com.android.contacts/data"), values);
		
		// 千万记得clear掉旧的数据
		values.clear();
		values.put("data1", "1385267");
		values.put("mimetype", "vnd.android.cursor.item/phone_v2");
		values.put("raw_contact_id", contact_id);
		cr.insert(Uri.parse("content://com.android.contacts/data"), values);
	}

}