我的本地通知在SDK 26之前的android系统上运行
但是在Android O中,我有以下内容
But in a Android O I've got the following warning, and the broadcast receiver is not fired.
W/BroadcastQueue: Background execution not allowed: receiving Intent { act=package.name.action.LOCAL_NOTIFICATION cat=[com.category.LocalNotification] flg=0x14 (has extras) } to package.name/com.category.localnotifications.LocalNotificationReceiver从我阅读的内容来看,在android O中,广播接收器受到更多限制,但是如果是这样,即使主要活动不是
From what I've read broadcast receivers are more restricted in android O, but if so, how should I schedule the broadcast if I want it launching even if the main activity is not running?
我应该使用服务而不是接收器吗?
Should I use services instead of receivers?
这是AlarmManager启动代码:
This is the AlarmManager launch code:
public void Schedule(String aID, String aTitle, String aBody, int aNotificationCode, long aEpochTime) { Bundle lExtras = new Bundle(); lExtras.putInt("icon", f.getDefaultIcon()); lExtras.putString("title", aTitle); lExtras.putString("message", aBody); lExtras.putString("id", aID); lExtras.putInt("requestcode", aNotificationCode); Intent lIntent = new Intent(LocalNotificationScheduler.ACTION_NAME) .addCategory(NotificationsUtils.LocalNotifCategory) .putExtras(lExtras); PendingIntent lPendIntent = PendingIntent.getBroadcast(f.getApplicationContext(), aNotificationCode, lIntent, PendingIntent.FLAG_UPDATE_CURRENT); AlarmManager lAlarmMgr = (AlarmManager) f.getSystemService(Context.ALARM_SERVICE); lAlarmMgr.set(AlarmManager.RTC, 1000, lPendIntent); }这是接收方代码:
public class LocalNotificationReceiver extends BroadcastReceiver { public static native void nativeReceiveLocalNotification (String aID, String aTitle, String aMessage, boolean aOnForeground ); /** This method receives the alarms set by LocalNotificationScheduler, * notifies the CAndroidNotifications c++ class, and (if needed) ships a notification banner */ @Override public void onReceive(Context aContext, Intent aIntent) { Toast.makeText(context, text, duration).show(); }}
Android清单:
Android manifest:
<receiver android:name="com.category.localnotifications.LocalNotificationReceiver"> <intent-filter> <action android:name="${applicationId}.action.LOCAL_NOTIFICATION" /> <category android:name="com.category.LocalNotification" /> </intent-filter> </receiver>推荐答案
Android O到目前为止还很新。因此,我尝试消化并提供尽可能准确的信息。
Android O are pretty new to-date. Hence, I try to digest and provide as accurate possible information.
来自 developer.android/about/versions/oreo/background.html#broadcasts
- 面向Android 8.0或更高版本的应用无法在其清单中为隐式广播注册广播接收器。
- 应用程序可以在运行时使用 Context.registerReceiver()为任何人注册接收者广播,无论是隐式还是显式。
- Apps that target Android 8.0 or higher can no longer register broadcast receivers for implicit broadcasts in their manifest.
- Apps can use Context.registerReceiver() at runtime to register a receiver for any broadcast, whether implicit or explicit.
另外,在 developer.android/training/scheduling/alarms.html ,这些示例使用显式广播,并且未提及任何有关Android O的特殊信息。
Also, in developer.android/training/scheduling/alarms.html , the examples are using explicit broadcast, and doesn't mention anything special regarding Android O.
我可以建议您尝试按以下方式尝试显式广播?
May I suggest you try out explicit broadcast as follow?
public static void startAlarmBroadcastReceiver(Context context, long delay) { Intent _intent = new Intent(context, AlarmBroadcastReceiver.class); PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, _intent, 0); AlarmManager alarmManager = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE); // Remove any previous pending intent. alarmManager.cancel(pendingIntent); alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + delay, pendingIntent); }AlarmBroadcastReceiver
AlarmBroadcastReceiver
public class AlarmBroadcastReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { } }在 AndroidManifest ,只需将类定义为
<receiver android:name="org.yccheok.AlarmBroadcastReceiver" > </receiver>
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带有AlarmManager和BroadcastReceiver的LocalNotification无法在Android O中启动(oreo)
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