标签:
当程序处于后台运作的时候,Activity处于onStop状态,so只要在onStop方法中将程序运行状态显示在状态栏即可
//在状态栏显示程序通知
private void showNotification() {
// 创建一个NotificationManager的引用
NotificationManager notificationManager = (NotificationManager) this
.getSystemService(android.content.Context.NOTIFICATION_SERVICE);
// 定义Notification的各种属性
Notification notification = new Notification(R.drawable.ic_launcher,
"superGao", System.currentTimeMillis());
notification.flags |= Notification.FLAG_ONGOING_EVENT; // 将此通知放到通知栏的"Ongoing"即"正在运行"组中
notification.flags |= Notification.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.flags |= Notification.FLAG_SHOW_LIGHTS;
notification.defaults = Notification.DEFAULT_LIGHTS;
notification.ledARGB = Color.BLUE;
notification.ledOnMS = 5000;
// 设置通知的事件消息
CharSequence contentTitle = "superGao"; // 通知栏标题
CharSequence contentText = "love"; // 通知栏内容
Intent notificationIntent = new Intent(this, FirstActivity.class); // 点击该通知后要跳转的Activity
PendingIntent contentItent = PendingIntent.getActivity(this, 0,
notificationIntent, 0);
notification.setLatestEventInfo(this, contentTitle, contentText,
contentItent);
// 把Notification传递给NotificationManager
notificationManager.notify(0, notification);
}
/**
* 当此Activity处于后台工作时, 在状态栏显示通知
*/
@Override
protected void onStop() {
showNotification();
super.onStop();
}
当程序再次进入运行界面时,Activity处于onResume状态,so只要在onResume方法中去掉状态栏的程序运行信息即可
/**
* 此Activity启动后关闭状态栏的通知
*/
@Override
protected void onResume() {
// 启动后删除之前我们定义的通知
NotificationManager notificationManager = (NotificationManager) this
.getSystemService(NOTIFICATION_SERVICE);
notificationManager.cancel(0);
super.onResume();
}
标签:
原文地址:http://www.cnblogs.com/superWolf/p/4646938.html