Android(安卓)的状态栏通知(Notification)

Android的状态栏通知(Notification)

如果需要查看消息，可以拖动状态栏到屏幕下方即可查看消息。
发送消息的代码如下：
//获取通知管理器
NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
int icon = android.R.drawable.stat_notify_chat;
long when = System.currentTimeMillis();
//新建一个通知，指定其图标和标题
Notification notification = new Notification(icon, null, when);//第一个参数为图标,第二个参数为短暂提示标题,第三个为通知时间
notification.defaults = Notification.DEFAULT_SOUND;//发出默认声音
Intent openintent = new Intent(this, OtherActivity.class);
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, openintent, 0);//当点击消息时就会向系统发送openintent意图
notification.setLatestEventInfo(this, “标题”, “我是内容", contentIntent);
mNotificationManager.notify(0, notification);//第一个参数为自定义的通知唯一标识

示例代码：

package cn.itcast.notifaction;import java.io.File;import android.app.Activity;import android.app.Notification;import android.app.NotificationManager;import android.app.PendingIntent;import android.content.Intent;import android.net.Uri;import android.os.Bundle;import android.view.View;public class DemoActivity extends Activity {/** Called when the activity is first created. */@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);}public void click(View view) {// 1.Get a reference to the NotificationManager:// 得到一个notification的服务NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);// 2.Instantiate the Notification:Notification notification = new Notification(R.drawable.ic_launcher,"tickertext", System.currentTimeMillis());notification.sound = Uri.fromFile(new File("/sdcard/haha.mp3"));//设置震动notification.vibrate = new long[] { 100, 250, 100, 5000 };// notification.flags = Notification.FLAG_NO_CLEAR;// 3.Define the notification's message and PendingIntent:Intent intent = new Intent(this, DemoActivity.class);PendingIntent contentIntent = PendingIntent.getActivity(this, 0,intent, 0);notification.setLatestEventInfo(this, "notife 标题", "noti 正文",contentIntent);// 4.Pass the Notification to the NotificationManager:manager.notify(0, notification);}}

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