问题的解决方案是使用Android系统的IntentService来接收AlarmManager的广播推送并显示通知,这样即使应用被完全销毁也可以在后台收到通知并及时显示。代码示例:
首先,在AndroidManifest.xml文件中注册IntentService:
然后,在创建AlarmManager时,使用PendingIntent调用IntentService: Intent intent = new Intent(context, MyNotificationService.class); PendingIntent pendingIntent = PendingIntent.getService(context, 0, intent, 0); AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE); alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + interval, interval, pendingIntent);
最后,在MyNotificationService的onHandleIntent方法中进行通知的创建和显示: public void onHandleIntent(Intent intent) { //创建通知 NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); NotificationCompat.Builder builder = new NotificationCompat.Builder(this, CHANNEL_ID) .setSmallIcon(R.drawable.ic_notification) .setContentTitle("My Notification") .setContentText("This is my notification") .setPriority(NotificationCompat.PRIORITY_DEFAULT);
//显示通知
notificationManager.notify(notificationId, builder.build());
}"