Android FusedLocationProviderApi：传入意图没有 LocationResult 或 LocationAvailability

我正在尝试通过 Google 的 FusedLocationProviderApi 订阅位置更新。我想在后台接收更新，这样即使应用程序被终止我也会收到更新。我尽可能遵循在线文档，编写了以下代码。注意：这是在意图服务中完成的，而不是在 UI 线程上完成的，这就是我使用阻塞连接/结果方法的原因。

private void startLocationServices(String deviceId, int pollingInterval) {
    Log.i(TAG, "Starting location services with interval: " + pollingInterval + "ms");
    PowerManager powerManager = (PowerManager) getSystemService(POWER_SERVICE);
    final PowerManager.WakeLock wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG);
    wakeLock.acquire();

    final GoogleApiClient googleApiClient =
            new GoogleApiClient.Builder(this)
                    .addApi(LocationServices.API)
                    .build();

    ConnectionResult result = googleApiClient.blockingConnect();

    if (!result.isSuccess() || !googleApiClient.isConnected()) {
        Log.e(TAG, "Failed to connect to Google Api");
        wakeLock.release();
        return;
    }

    LocationRequest locationRequest = new LocationRequest();
    locationRequest.setInterval(pollingInterval);
    locationRequest.setFastestInterval(10000);
    locationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);

    Intent locationIntent = new Intent(this, GeoBroadcastReceiver.class);
    locationIntent.putExtra(EXTRA_LOCATION_UPDATE_DEVICE_ID, deviceId);
    locationIntent.setAction(GeoBroadcastReceiver.ACTION_LOCATION_UPDATE);
    PendingIntent locationPendingIntent = PendingIntent.getBroadcast(
            this, 0, locationIntent, PendingIntent.FLAG_UPDATE_CURRENT);

    PendingResult pendingResult = LocationServices.FusedLocationApi
            .requestLocationUpdates(googleApiClient, locationRequest, locationPendingIntent);

    Result requestResult = pendingResult.await();
    Status requestStatus = requestResult.getStatus();

    if (requestStatus.isSuccess()) {
        Log.i(TAG, "Successfully subscribed to location updates.");
    } else {
        Log.e(TAG, String.format(
                        "Failed subscribe to location updates. Error code: %d, Message: %s.",
                        requestStatus.getStatusCode(),
                        requestStatus.getStatusMessage()));
    }

    googleApiClient.disconnect();
    wakeLock.release();
}

当我运行这个时，我看到requestStatus.isSuccess()返回 true，表明我已成功订阅位置更新。此外，GeoBroadcastReciever，这延伸了WakefulBroadcastReceiver，以正确的轮询间隔接收意图，并执行正确的操作。到目前为止似乎还不错。这就是我正在做的onReceive方法为GeoBroadcastReceiver:

    if (LocationResult.hasResult(intent)) {
        LocationResult locationResult = LocationResult.extractResult(intent);
        Location location = locationResult.getLastLocation();
        if (location != null) {
            GeoMonitoringService.wakefulLocationUpdate(context, location);
        } else {
            Log.e(TAG, "LocationResult does not contain a LastLocation.");
        }
    } else {
        Log.e(TAG, "Intent does not contain a LocationResult.");
    }

问题是，每当意图出现时，它并不包含LocationResult，也不包含LocationAvailabilityResult。我在调试器中检查了传入的意图，意图的附加项中的唯一项目是我在设置意图时添加的附加项（设备 ID）。像这样，LocationResult.hasResult()返回假。每一次。

我在运行 4.0.1 的 Galaxy Note 4 和运行 5.1.1 的 Nexus 4 上尝试过此操作，结果相同。

如果我在手机上禁用位置，我就会像预期的那样完全停止接收意图。

从待处理意图中删除额外内容，否则不会传递位置结果。我找不到文档中对此进行解释的位置，但经过大量试验和错误后我发现了这一点。