android - 带有附加功能的地理围栏 PendingIntent

Question

问题是:

添加地理围栏的服务:

public class GeofenceService extends Service implements GooglePlayServicesClient.ConnectionCallbacks, GooglePlayServicesClient.OnConnectionFailedListener, LocationClient.OnAddGeofencesResultListener, LocationClient.OnRemoveGeofencesResultListener {
     ...

            @Override
                public void onConnected(Bundle bundle) {
                    Log.d(TAG, "onConnected");
                    switch (action){
                        case ADD:
                            Log.d(TAG, "onConnected ADD");
                            locationClient.addGeofences(geofencesToAdd, getPendingIntent(), this);
                            break;
                        case REMOVE:
                            Log.d(TAG, "onConnected REMOVE");
                            locationClient.removeGeofences(geofencesToRemove, this);
                            break;
                    }
                }

                private PendingIntent getPendingIntent(){
                    Intent intent = new Intent().setClass(this, TransitionsIntentService.class);
                    intent.putExtra(EXTRA_DEALS, deals);
                    return PendingIntent.getService(this, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);
                }
    ...
}

如您所见，Intent 传递一些数据并启动 TransitionIntentService :

public class TransitionsIntentService extends IntentService {

   ... 
@Override
protected void onHandleIntent(Intent intent) {
        deals = (ArrayList<Deal>) intent.getSerializableExtra(GeofenceService.EXTRA_DEALS); //THIS CAN BE NULL

        int transitionType = LocationClient.getGeofenceTransition(intent);

        List<Geofence> triggeredGeofences = LocationClient.getTriggeringGeofences(intent); //THIS CAN BE NULL
        List<String> triggeredIds = new ArrayList<String>();

        for (Geofence geofence : triggeredGeofences) {
            Log.d("GEO", "onHandle:" + geofence.getRequestId());
            processGeofence(geofence, transitionType);
            triggeredIds.add(geofence.getRequestId());
        }

    ...
}

如果我尝试在 getPendingIntent 中放置 Extra(..., deals)方法我有 List<Geofence> triggeredGeofences = LocationClient.getTriggeringGeofences(intent) == NULL .

如果我不通过 extra 一切正常。

我怎样才能通过我的额外费用并仍然从 LocationClient 中获得额外费用？ ？

Answer 1

我知道这是一个老问题，但我遇到了完全相同的症状和问题。基本上，GeofenceEvent 似乎不能与 Intent 中的 Serializable extra 共存。我找到的唯一解决方案是展平可序列化对象，并为每个字段使用一个单独的 extra 和一个简单的数据类型，就像这个简单的例子一样:

通过 Intent 传输的对象:

public class MyObject {
  public String stringfield;
  public int intField;

  public MyObject fromIntent(Intent intent) {
    stringField = intent.getStringExtra("stringField");
    intField = intent.getIntExtra("intField", -1);
    return this;
  }

  public MyObject toIntent(Intent intent) {
    intent.putExtra("stringField", stringField);
    intent.putExtra("intField", intField);
    return this;
  }
}

创建和填充 Intent :

MyObject obj = ...;
Intent intent = ...;
myObject.toIntent(intent);

从接收到的 Intent 中提取数据:

Intent intent = ...;
MyObject obj = new MyObject().fromIntent(intent);

这有点麻烦，但这是我让它工作的唯一方法。我现在可以从同一个 Intent 中提取 GeofenceEvent 数据和我的自定义数据。