AlarmManager和BroadcastReceiver的LocalNotification未在Android O(oreo)中启动

概述在SDK26之前,我已经在机器人上运行了本地通知但是在AndroidO中我收到了以下警告,广播接收器没有被解雇.W/BroadcastQueue:Backgroundexecutionnotallowed:receivingIntent{act=package.name.action.LOCAL_NOTIFICATIONcat=[com.category.LocalNotification]flg=0x14

在SDK 26之前,我已经在机器人上运行了本地通知

但是在Android O中我收到了以下警告,广播接收器没有被解雇.

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

从我所看到的广播接收器在AndroID O中受到更多限制,但如果是这样,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 */@OverrIDepublic voID onReceive(Context aContext, Intent aIntent){    Toast.makeText(context, text, duration).show();}

}

AndroID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>

解决方法:

AndroID O是迄今为止最新的.因此,我尝试消化并提供尽可能准确的信息.

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

>针对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.

>应用可以继续在其清单中注册显式广播.

此外,在https://developer.android.com/training/scheduling/alarms.html中,示例使用显式广播,并未提及有关AndroID O的任何特殊内容.

我建议你尝试一下如下的明确广播吗？

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);        }

AlarmbroadcastReceiver

public class AlarmbroadcastReceiver extends broadcastReceiver {    @OverrIDe    public voID onReceive(Context context, Intent intent) {    }}

在AndroIDManifest中,只需将类定义为

<receiver androID:name="org.yccheok.AlarmbroadcastReceiver" ></receiver>

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