Android学习笔记，Notification通知事件

Android的通知事件，可以在状态栏上面显示，滚动显示通知突然内容以及图标，可以设置在状态栏展开的时候，显示通知项的标题和内容，以及点击它所打开的应用程序。。。

NotificationManager，通过getSystemService(Context.NOTIFICATION_SERVICE);来获取系统的通知管理器

新建一个通知事件，Notification notification = new Notification(R.drawable.icon, “状态栏上滚动显示的标题”, System.currentTimeMillis());

其中第一参数为notification在状态栏上显示的图标，第二个为添加时状态栏上显示的标题，最后为通知事件添加的时间。

通过notification.flags参数设置通知事件的标志，如是属于“正在进行的”还是“通知”等，具体得看reference了，，，

notification.flags |= Notification.FLAG_ONGOING_EVENT;

设置状态栏展开时，通知事件的标题和内容，以及点击所打开的程序。

Intent intent = new Intent(mContext, NotificationCancelAll.class);

PendingIntent pendingIntent = PendingIntent.getActivity(mContext, 0, intent, 0);

notification.setLatestEventInfo(mContext, "NotificationTitle",

"Notification Content!", pendingIntent);

如果有需要可以，自己定义在状态展开时所显示的view

RemoteViews remoteView = new RemoteViews(getPackageName(), R.layout.notification_test);

notification.contentView = remoteView;

最后添加设置好的notification即可，其中R.string.app_name为这个通知事件的ID，为后面移除这个通知用的。

mNotifyManager.notify(R.string.app_name, notification);

移除：

notifyManager.cancel(R.string.app_name);

/** * Android添加Notification的代码片断，防止忘记了 * Yao.GUET * blog: http://blog.youkuaiyun.com/Yao_GUET */ public void addNotify() { // TODO Auto-generated method stub NotificationManager mNotifyManager = (NotificationManager)getSystemService( Context.NOTIFICATION_SERVICE); // public Notification (int icon, CharSequence tickerText, long when) // icon will show on status bar // tickerText is the display content on status bar. Notification notification = new Notification(R.drawable.icon, null, System.currentTimeMillis()); // set the notification defaults, // DEFAULT_ALL=DEFAULT_VIBRATE | DEFAULT_LIGHTS | DEFAULT_SOUND notification.defaults = Notification.DEFAULT_ALL; // set the notification flags // FLAG_ONGOING_EVENT means notification will disaplay under ongoing // other will display under Notifications notification.flags |= Notification.FLAG_ONGOING_EVENT; // after a 100ms delay, vibrate for 250ms, pause for 100 ms and // then vibrate for 500ms. // notification.vibrate = new long[] { 100, 250, 100, 500}; // set the intent, it will open when click the notification on expended status bar // intent.putExtra("img", R.drawable.icon); Intent intent = new Intent(mContext, NotificationCancelAll.class); PendingIntent pendingIntent = PendingIntent.getActivity(mContext, 0, intent, 0); // set the title and content show in notification panel // pendingIntent is onClick event notification.setLatestEventInfo(mContext, "NotificationTitle", "Notification Content!", pendingIntent); // custom the notification view in expended status bar // RemoteViews remoteView = new RemoteViews(getPackageName(), R.layout.notification_test); // notification.contentView = remoteView; // add the notification // here use R.string.app_name as the notification id, // cause it is unique integer in your app, meanwhile it could be any int you want. mNotifyManager.notify(R.string.app_name, notification); }