当用户进入Geofence或居住在Geofence时，应用程序意外关闭。

Question

我已经在我的android应用程序中实现了Geofence服务，以便在用户进入、居住或退出该Geofence时通知用户。在我的实现中，我可以通过对特定位置进行长时间的按压，在任何地方添加地理信息。但是当用户进入那个Geofence或者Geofence是添加这样的用户已经在Geofence，应用程序意外崩溃。

我怎样才能解决这个问题？

这是我的GeofenceBroadcastReceiver.java课。

public class GeoFenceBroadcastReceiver extends BroadcastReceiver {

    private static final String TAG = "GeoFenceBroadcastReceiv";
    @Override
    public void onReceive(Context context, Intent intent) {
        // TODO: This method is called when the BroadcastReceiver is receiving
        // an Intent broadcast.
        Toast.makeText(context, "Geofence triggered...", Toast.LENGTH_SHORT).show();

        GeofencingEvent geofencingEvent = GeofencingEvent.fromIntent(intent);

        if (geofencingEvent.hasError()) {
            Log.d(TAG, "onReceive: Error receiving geofence event...");
            return;
        }

        List<Geofence> geofenceList = geofencingEvent.getTriggeringGeofences();
        for (Geofence geofence: geofenceList) {
            Log.d(TAG, "onReceive: " + geofence.getRequestId());
        }

        Location location = geofencingEvent.getTriggeringLocation();
        int transitionType = geofencingEvent.getGeofenceTransition();

        switch (transitionType) {
            case Geofence.GEOFENCE_TRANSITION_ENTER:
                Toast.makeText(context, "GEOFENCE_TRANSITION_ENTER", Toast.LENGTH_SHORT).show();
                break;
            case Geofence.GEOFENCE_TRANSITION_DWELL:
                Toast.makeText(context, "GEOFENCE_TRANSITION_DWELL", Toast.LENGTH_SHORT).show();
                break;
            case Geofence.GEOFENCE_TRANSITION_EXIT:
                Toast.makeText(context, "GEOFENCE_TRANSITION_EXIT", Toast.LENGTH_SHORT).show();
                break;
        }

        throw new UnsupportedOperationException("Not yet implemented");
    }
}

谢谢!

Answer 1

在某些情况下，geofencingEvent返回null，因此可以实现相应的对策。