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Android:Notification跟NotificationManager

热度:13   发布时间:2016-04-28 07:17:42.0
Android:Notification和NotificationManager

1. NotificationManager和Notification用来设置通知。

??? 通知的设置等操作相对比较简单,基本的使用方式就是用新建一个Notification对象,然后设置好通知的各项参数,然后使用系统后台运行的NotificationManager服务将通知发出来。

基本步骤如下:

1)得到NotificationManager:

???? String ns = Context.NOTIFICATION_SERVICE;

???? NotificationManager mNotificationManager = (NotificationManager) getSystemService(ns);

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2)创建一个新的Notification对象:

???? Notification notification = new Notification();

???? notification.icon = R.drawable.notification_icon;

???? 也可以使用稍微复杂一些的方式创建Notification:

???? int icon = R.drawable.notification_icon; //通知图标

???? CharSequence tickerText = "Hello"; //状态栏(Status Bar)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

???? Notification notification = new Notification(icon, tickerText, when);

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3)填充Notification的各个属性:

???? Context context = getApplicationContext();

???? CharSequence contentTitle = "My notification";

???? CharSequence contentText = "Hello World!";

???? Intent notificationIntent = new Intent(this, MyClass.class);

???? PendingIntent contentIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);

???? notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);

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Notification提供了丰富的手机提示方式:

a)在状态栏(Status Bar)显示的通知文本提示,如:

???? notification.tickerText = "hello";

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b)发出提示音,如:

???? notification.defaults |= Notification.DEFAULT_SOUND;

???? notification.sound = Uri.parse("file:///sdcard/notification/ringer.mp3");

???? notification.sound = Uri.withAppendedPath(Audio.Media.INTERNAL_CONTENT_URI, "6");

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c)手机振动,如:

???? notification.defaults |= Notification.DEFAULT_VIBRATE;

???? long[] vibrate = {0,100,200,300};

???? notification.vibrate = vibrate;

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d)LED灯闪烁,如:

???? notification.defaults |= Notification.DEFAULT_LIGHTS;

???? notification.ledARGB = 0xff00ff00;

???? notification.ledOnMS = 300;

???? notification.ledOffMS = 1000;

???? notification.flags |= Notification.FLAG_SHOW_LIGHTS;

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4)发送通知:

???? private static final int ID_NOTIFICATION = 1;

???? mNotificationManager.notify(ID_NOTIFICATION, notification);

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2. 通知的更新

??? 如果需要更新一个通知,只需要在设置好notification之后,再调用setLatestEventInfo,然后重新发送一次通知即可。

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3. 自定义通知视图

??? 这部分可以参考官方文档,讲的很详细了。

??? AndroidSDK: docs/guide/topics/ui/notifiers/notifications.html

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