LocalNotification 与 AlarmManager 和 BroadcastReceiver 在 Android O (oreo) 中未启动

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，并且广播接收器不会被触发。

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，广播接收器在 android O 中受到更多限制，但如果是这样，如果我希望广播启动，即使主要活动没有运行，我应该如何安排广播？

我应该使用服务而不是接收器吗？

这是 AlarmManager 启动代码：

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);
}

这是接收者代码：

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();
}

}

安卓清单：

<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>

Android O 迄今为止还很新。因此，我尝试消化并提供尽可能准确的信息。

From https://developer.android.com/about/versions/oreo/background.html#broadcasts https://developer.android.com/about/versions/oreo/background.html#broadcasts

• Apps that target Android 8.0 or higher can no longer register broadcast receivers for implicit broadcasts in their manifest.
  • 应用程序可以使用Context.registerReceiver()在运行时注册接收器any广播、天气implicit or explicit.
• 应用程序可以继续注册显式广播在他们的清单中。

另外，在https://developer.android.com/training/scheduling/alarms.html https://developer.android.com/training/scheduling/alarms.html，这些示例使用显式广播，并且没有提及有关 Android O 的任何特殊内容。

我可以建议您尝试如下显式广播吗？

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);        
}

报警广播接收器

public class AlarmBroadcastReceiver extends BroadcastReceiver {


    @Override
    public void onReceive(Context context, Intent intent) {
    }

}

In AndroidManifest，只需将类定义为

<receiver android:name="org.yccheok.AlarmBroadcastReceiver" >
</receiver>