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下面来模拟一个点击按钮就可以发送一条消息，并且显示在Title（手机顶部）位置，下面借来看一下代码的具体实现：

1、创建一个点击按钮XML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"><Buttonandroid:id="@+id/notificationbtn"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="发送通知"/></RelativeLayout>

这里特别住的是要引入一个V4包，

package com.scxh.notification;import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.support.v4.app.NotificationCompat;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;public class MainActivity extends Activity {private NotificationCompat.Builder mBuilder;private NotificationManager mNotifyManager;private Handler mHandler = new Handler();private Button mButton;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mButton=(Button) findViewById(R.id.notificationbtn);mButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {mNotifyManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);final int id = 001;// 第一步mBuilder = new NotificationCompat.Builder(MainActivity.this);mBuilder.setSmallIcon(R.drawable.a);mBuilder.setContentTitle("图片下载");mBuilder.setContentText("正在下载中...");//mBuilder.setProgress(0, 0, false);new Thread(){public void run() {int max = 100;for(int i = 0; i< 100; i++){mBuilder.setProgress(max, i, false);mNotifyManager.notify(id, mBuilder.getNotification());try {Thread.sleep(200);} catch (InterruptedException e) {e.printStackTrace();}}mHandler.post(new Runnable() {@Overridepublic void run() {mBuilder.setContentText("下载完成");mNotifyManager.notify(id, mBuilder.getNotification());}});};}.start();// 第三步 发布通知Notification notification = mBuilder.getNotification();notification.flags = Notification.FLAG_AUTO_CANCEL;mNotifyManager.notify(id, notification);}});}private void createBaseNotification(){Intent intent=new Intent(MainActivity.this,Zzhuanghuan.class);//定义notification的Action(行为)PendingIntent pendingIntentp=PendingIntent.getActivity(MainActivity.this, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);//获取NotificationManager（通知管理器）NotificationManager mNotificationManager=(NotificationManager) getSystemService(NOTIFICATION_SERVICE);//创建BuilderNotificationCompat.Builder mbBuilder=new NotificationCompat.Builder(MainActivity.this);mbBuilder.setContentIntent(pendingIntentp);mbBuilder.setSmallIcon(R.drawable.a);mbBuilder.setContentTitle("問蒼茫大地，誰主沉浮");mbBuilder.setContentText("彈指間檣櫓灰飛煙滅");//弹出显示mbBuilder.setTicker("問蒼茫大地，誰主沉浮");//音乐属性//mbBuilder.setDefaults(Notification.DEFAULT_ALL);int notificationId=001;Notification notification= mbBuilder.getNotification();notification.flags=Notification.FLAG_AUTO_CANCEL;mNotificationManager.notify(notificationId,notification);}}