<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.example.notificationdemo.MainActivity" >

    <LinearLayout

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:orientation="vertical"

        android:gravity="center_horizontal"

        >

        <Button

            android:id="@+id/send_btn"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:text="send Message"/>

        <Button

            android:id="@+id/cancel_btn"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:text="cancel Message"

            />

    </LinearLayout>

</RelativeLayout>

package com.example.notificationdemo;

import android.app.Activity;

import android.app.Notification;

import android.app.Notification.Builder;

import android.app.NotificationManager;

import android.app.PendingIntent;

import android.content.Context;

import android.content.Intent;

import android.os.Bundle;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

/**

 * Notification是显示在手机状态栏的消息（手机状态栏位于手机最顶端），代表一种全局效果的通知 通知栏的内容：图标，标题，内容，时间，点击后响应

 * 如何实现通知栏： 获取notificationManager 显示通知栏：notify(id,notification) 取消通知栏：cancel(id)

 * 构造Notification并设置显示内容 通知栏通知可以设置声音提示，指示灯以及震动效果，后两者注意需添加权限

 *

 *

 * @author Administrator

 *

 */

public class MainActivity extends Activity implements OnClickListener {

    private Button send;

    private Button cancel;

    private NotificationManager manager;

    private int NOTIFICATION_ID;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        send = (Button) findViewById(R.id.send_btn);

        cancel = (Button) findViewById(R.id.cancel_btn);

        send.setOnClickListener(this);

        cancel.setOnClickListener(this);

        manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);//系统常用服务

    }

    @Override

    public void onClick(View v) {

        // TODO Auto-generated method stub

        switch (v.getId()) {

        case R.id.send_btn:

            sendNotification();

            break;

        case R.id.cancel_btn:

            manager.cancel(NOTIFICATION_ID);//取消发送的通知

            break;

        }

    }

    /**

     * 构造notification并发送到通知栏

     */

    private void sendNotification() {

        // TODO Auto-generated method stub

        Intent intent = new Intent(this, MainActivity.class);

        PendingIntent pintent = PendingIntent.getActivity(this, 0, intent, 0);

        Builder builder = new Notification.Builder(this);

        builder.setSmallIcon(R.drawable.ic_launcher);// 设置图标

        builder.setTicker("hello");// 设置手机状态栏的提示

        // 拖拽开手机状态栏提示的内容

        builder.setWhen(System.currentTimeMillis());// 设置时间

        builder.setContentTitle("通知");// 设置标题

        builder.setContentText("内容");// 设置内容

        builder.setContentIntent(pintent);// 设置点击之后的响应,意图

        /*

         * builder.setDefaults(Notification.DEFAULT_SOUND);//设置声音

         * builder.setDefaults(Notification.DEFAULT_LIGHTS);//设置指示灯

         * builder.setDefaults(Notification.DEFAULT_VIBRATE);//设置震动

         */

        builder.setDefaults(Notification.DEFAULT_ALL);

        Notification notification = builder.getNotification();// 4.1以下

        // builder.build();//4.1及以上

        manager.notify(NOTIFICATION_ID, notification);//发送通知到通知栏

    }

}