android – 如何监控Oreo背景中的地理围栏？

我按照本教程：https://developer.android.com/training/location/geofencing并在Android<上工作正常8,但在奥利奥,由于新的操作系统背景限制,我遇到了问题. 当应用程序处于后台时,如何获得地理围栏转换触发器？ 我也尝试使用BroadcastReceiver而不是IntentService,但结果是一样的. 待定意图：

private val geofencePendingIntent: PendingIntent by lazy {
    val intent = Intent(context, GeofenceBroadcastReceiver::class.java)
    intent.action = "com.example.GEOFENCE_TRANSITION"
    PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)
}

注册地理围栏：

geofencingClient.addGeofences(request, geofencePendingIntent).run {
    addOnSuccessListener {
        Log.d(TAG, "Geofence added")
    }
    addOnFailureListener {
        Log.e(TAG, "Failed to create geofence")
    }
} 

广播接收器：

class GeofenceBroadcastReceiver : BroadcastReceiver() {
    override fun onReceive(p0: Context?, p1: Intent?) {
        Log.d(TAG, "onReceive")
    }
}

清单中的接收者：

<receiver android:name=".GeofenceBroadcastReceiver">
    <intent-filter>
        <action android:name="com.example.GEOFENCE_TRANSITION"/>
    </intent-filter>
</receiver>

谢谢

编辑：IntentService版本

待定意图：

private val geofencePendingIntent: PendingIntent by lazy {
    val intent = Intent(context, GeofenceIntentService::class.java)
    PendingIntent.getService(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)
}

意向服务：

class GeofenceIntentService : IntentService("GeofenceIntentService") {
    override fun onHandleIntent(p0: Intent?) {
        Log.d(TAG, "onHandleIntent")
    }
}

清单中的服务：

<service android:name=".GeofenceIntentService"/>

解决方法:

在后台达到地理围栏转换时,您应该在Android 8上每隔几分钟获得一次Intent.

见：https://developer.android.com/training/location/geofencing#java

Handle geofence transitions
When Location Services detects that the user has entered or exited a geofence, it sends out the Intent contained in the PendingIntent you included in the request to add geofences. This Intent is received by a service like GeofenceTransitionsIntentService, which obtains the geofencing event from the intent, determines the type of Geofence transition(s), and determines which of the defined geofences was triggered. It then sends a notification as the output.

Note: On Android 8.0 (API level 26) and higher, if an app is running in the background while monitoring a geofence, then the device responds to geofencing events every couple of minutes. To learn how to adapt your app to these response limits, see Background Location Limits.

一旦地理围栏服务被注册,它仍然存在,您没有其他任何事情要做,只检查您的IntentService以获取特定的PendingIntent,排除设备重启时您需要重新注册您的地理围栏服务.

另请查看：https://developer.android.com/about/versions/oreo/background-location-limits

标签：geofencing,android-geofence,android,gps,geolocation
来源： https://codeday.me/bug/20190910/1801030.html