java - 除非 GPS 开启，否则融合位置提供程序无法获取位置

Question

因此，我已经实现了新的 Fused Location Provider API 来获取用户的位置，但出于某种原因，除非打开 GPS，否则我无法获取任何位置。并非总是如此，用户会打开他们的 GPS，我不想在每次加载应用程序时都要求他们打开他们的 GPS。我怎样才能告诉 API 向我提供它可用的任何提供商的位置？

这是我的代码:

public class FusedLocationService implements
        LocationListener,
        GoogleApiClient.ConnectionCallbacks,
        GoogleApiClient.OnConnectionFailedListener {

    public interface OnLocationChangedListener {
        public void OnLocationChanged(Location location);
    }

    private final String TAG = "SE8611";
    private boolean mRequestingLocationUpdates = true;

    private OnLocationChangedListener mCallBack;

    Service locationService;
    private LocationRequest locationRequest;
    private GoogleApiClient googleApiClient;
    private Location mCurrentLocation;
    private FusedLocationProviderApi fusedLocationProviderApi = LocationServices.FusedLocationApi;

    public FusedLocationService(Service locationService, final long INTERVAL, final long FASTEST_INTERVAL) {
        Logger.log(TAG, "FusedLocationService called");

        this.mCallBack = (OnLocationChangedListener)locationService;

        locationRequest = LocationRequest.create();
        locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
        locationRequest.setInterval(INTERVAL);
        locationRequest.setFastestInterval(FASTEST_INTERVAL);
        this.locationService = locationService;

        googleApiClient = new GoogleApiClient.Builder(locationService)
                .addApi(LocationServices.API)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .build();

        if (googleApiClient != null) {
            googleApiClient.connect();
        }
    }

    @Override
    public void onConnected(Bundle connectionHint) {
        if(mRequestingLocationUpdates) {
            startLocationUpdates();
        }else{
            Logger.log(TAG, "Location updates are already running.");
        }
    }

    protected void startLocationUpdates() {
        this.fusedLocationProviderApi.requestLocationUpdates(
                googleApiClient, locationRequest, this);
        this.mRequestingLocationUpdates = false;
    }

    @Override
    public void onLocationChanged(Location mCurrentLocation) {
        Logger.log(TAG, "onLocationChanged called");
        this.mCurrentLocation = mCurrentLocation;
        this.mCallBack.OnLocationChanged(this.mCurrentLocation);
    }

    public void startLocationUpdatesAfterResume(){
        if (googleApiClient.isConnected() && !mRequestingLocationUpdates) {
            Logger.log(TAG, "startLocationUpdatesAfterResume called");
            this.startLocationUpdates();
        }
    }

    public void stopLocationUpdates() {
        Logger.log(TAG, "stopping Location Updates");
        LocationServices.FusedLocationApi.removeLocationUpdates(
                googleApiClient, this);
    }

    public Location getLocation() {
        return this.mCurrentLocation;
    }

    @Override
    public void onConnectionSuspended(int i) {
        this.mRequestingLocationUpdates = true;
    }

    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {
        this.mRequestingLocationUpdates = true;
    }
}

Answer 1

我和你有同样的问题，这根本不是问题。Android 曾经有一个 GPS 按钮，可以让你直接控制它，但他们用一个工作方式不同的位置按钮取代了它。为了获得任何类型的位置，您必须将其打开。和您一样，我认为位置按钮只能打开和关闭 GPS，但事实并非如此。您可以通过更改定位模式来控制 GPS: 1. 高精度(GPS、Wi-Fi 和移动网络) 2. 省电(Wi-Fi 和移动网络) 3. 仅 GPS