android Notification的使用

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(1)、使用系统定义的Notification

以下是使用示例代码:

//创建一个NotificationManager的引用String ns = Context.NOTIFICATION_SERVICE;NotificationManager mNotificationManager = (NotificationManager)getSystemService(ns);//定义Notification的各种属性int icon = R.drawable.icon; //通知图标CharSequence tickerText = "Hello"; //状态栏显示的通知文本提示long when = System.currentTimeMillis(); //通知产生的时间,会在通知信息里显示//用上面的属性初始化NofificationNotification notification = new Notification(icon,tickerText,when);/** 添加声音* notification.defaults |=Notification.DEFAULT_SOUND;* 或者使用以下几种方式* notification.sound = Uri.parse("file:///sdcard/notification/ringer.mp3");* notification.sound = Uri.withAppendedPath(Audio.Media.INTERNAL_CONTENT_URI, "6");* 如果想要让声音持续重复直到用户对通知做出反应,则可以在notification的flags字段增加"FLAG_INSISTENT"* 如果notification的defaults字段包括了"DEFAULT_SOUND"属性,则这个属性将覆盖sound字段中定义的声音*//** 添加振动* notification.defaults |= Notification.DEFAULT_VIBRATE;* 或者可以定义自己的振动模式:* long[] vibrate = {0,100,200,300}; //0毫秒后开始振动,振动100毫秒后停止,再过200毫秒后再次振动300毫秒* notification.vibrate = vibrate;* long数组可以定义成想要的任何长度* 如果notification的defaults字段包括了"DEFAULT_VIBRATE",则这个属性将覆盖vibrate字段中定义的振动*//** 添加LED灯提醒* notification.defaults |= Notification.DEFAULT_LIGHTS;* 或者可以自己的LED提醒模式:* notification.ledARGB = 0xff00ff00;* notification.ledOnMS = 300; //亮的时间* notification.ledOffMS = 1000; //灭的时间* notification.flags |= Notification.FLAG_SHOW_LIGHTS;*//** 更多的特征属性* notification.flags |= FLAG_AUTO_CANCEL; //在通知栏上点击此通知后自动清除此通知* notification.flags |= FLAG_INSISTENT; //重复发出声音,直到用户响应此通知* notification.flags |= FLAG_ONGOING_EVENT; //将此通知放到通知栏的"Ongoing"即"正在运行"组中* notification.flags |= FLAG_NO_CLEAR; //表明在点击了通知栏中的"清除通知"后,此通知不清除,* //经常与FLAG_ONGOING_EVENT一起使用* notification.number = 1; //number字段表示此通知代表的当前事件数量,它将覆盖在状态栏图标的顶部* //如果要使用此字段,必须从1开始* notification.iconLevel = ; //*///设置通知的事件消息Context context = getApplicationContext(); //上下文CharSequence contentTitle = "My Notification"; //通知栏标题CharSequence contentText = "Hello World!"; //通知栏内容Intent notificationIntent = new Intent(this,Main.class); //点击该通知后要跳转的ActivityPendingIntent contentIntent = PendingIntent.getActivity(this,0,notificationIntent,0);notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);//把Notification传递给NotificationManagermNotificationManager.notify(0,notification);

如果想要更新一个通知,只需要在设置好notification之后,再次调用 setLatestEventInfo(),然后重新发送一次通知即可,即再次调用notify()。

(2)、使用自定义的Notification

要创建一个自定义的Notification,可以使用RemoteViews。要定义自己的扩展消息,首先要初始化一个RemoteViews对象,然后将它传递给Notification的contentView字段,再把PendingIntent传递给contentIntent字段。以下示例代码是完整步骤:

//1、创建一个自定义的消息布局 view.xml<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent" android:layout_height="fill_parent"><ImageView android:id="@+id/image" android:layout_width="wrap_content"android:layout_height="fill_parent" android:layout_marginRight="10dp" /><TextView android:id="@+id/text" android:layout_width="wrap_content"android:layout_height="fill_parent" android:textColor="#000" /></LinearLayout>//2、在程序代码中使用RemoteViews的方法来定义image和text。然后把RemoteViews对象传到contentView字段RemoteViews contentView = new RemoteViews(getPackageName(),R.layout.view);contentView.setImageViewResource(R.id.image,R.drawable.icon);contentView.setTextViewText(R.id.text,”Hello,this message is in a custom expanded view”);notification.contentView = contentView;//3、为Notification的contentIntent字段定义一个Intent(注意,使用自定义View不需要setLatestEventInfo()方法)Intent notificationIntent = new Intent(this,Main.class);PendingIntent contentIntent = PendingIntent.getActivity(this,0,notificationIntent,0);notification.contentIntent = contentIntent;//4、发送通知mNotificationManager.notify(2,notification);//以下是全部示例代码//创建一个NotificationManager的引用String ns = Context.NOTIFICATION_SERVICE;NotificationManager mNotificationManager = (NotificationManager)getSystemService(ns);//定义Notification的各种属性int icon = R.drawable.icon; //通知图标CharSequence tickerText = "Hello"; //状态栏显示的通知文本提示long when = System.currentTimeMillis(); //通知产生的时间,会在通知信息里显示//用上面的属性初始化NofificationNotification notification = new Notification(icon,tickerText,when);RemoteViews contentView = new RemoteViews(getPackageName(),R.layout.view);contentView.setImageViewResource(R.id.image, R.drawable.iconempty);contentView.setTextViewText(R.id.text, "Hello,this is JC");notification.contentView = contentView;Intent notificationIntent = new Intent(this,Main.class);PendingIntent contentIntent = PendingIntent.getActivity(this,0,notificationIntent,0);notification.contentIntent = contentIntent;//把Notification传递给NotificationManagermNotificationManager.notify(0,notification);

转载自http://www.cnblogs.com/jerrychoi/archive/2010/05/28/1746221.html