带有 AlarmManager 和 BroadcastReceiver 的 LocalNotification 未在 Android O (oreo) 中启动 [英] LocalNotification with AlarmManager and BroadcastReceiver not firing up in Android O (oreo)
问题描述
我的本地通知在 SDK 26 之前的 android 上运行
但在 Android O 中,我收到以下警告,并且广播接收器没有被触发.
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
据我所知,android O 中的广播接收器受到更多限制,但如果是这样,即使主要活动未运行,如果我希望广播也启动,我应该如何安排广播?
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 是最新的.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 https://developer.android.com/about/versions/oreo/background.html#broadcasts
- 面向 Android 8.0 或更高版本的应用无法再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()
为任何广播注册接收器,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.
此外,在 https://developer.android.com/training/scheduling/alarms.html ,这些示例使用了显式广播,并且没有提到关于 Android O 的任何特殊内容.
Also, in https://developer.android.com/training/scheduling/alarms.html , the examples are using explicit broadcast, and doesn't mention anything special regarding Android O.
我可以建议您尝试如下显式广播吗?
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); }
<小时>
警报广播接收器
public class AlarmBroadcastReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { } }
在
AndroidManifest
中,定义类为<receiver android:name="org.yccheok.AlarmBroadcastReceiver" > </receiver>
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- Apps can use
- 应用程序可以在运行时使用