除非已启用GPS,否则融合位置提供商无法获取位置

Question

所以我已经实现了新的Fused Location Provider API以获取用户的位置,但由于某种原因,除非GPS打开,否则我无法获得任何位置.并非总是如此,用户是否会打开GPS,我不想让他们每次加载应用程序时都要打开GPS. 如何告诉API为我提供一个位置,其中包含可用的提供商？

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

我和你一样有同样的问题,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,但他们用一个不同的位置按钮取而代之.要获得任何类型的位置,您必须打开它.和你一样,我认为位置按钮只能打开和关闭GPS,但事实并非如此.您可以通过更改位置模式来控制GPS:1.高精度(GPS,Wi-Fi和移动网络)2.省电(Wi-Fi和移动网络)3.仅限GPS

Answer 2

您似乎正在使用LocationRequest.PRIORITY_HIGH_ACCURACY，与其他方法相比，它更喜欢使用 GPS。您可能想要使用PRIORITY_BALANCED_POWER_ACCURACY，它将在使用 GPS 之前使用 WiFi 和手机信号塔。

此外，由于PRIORITY_BALANCED_POWER_ACCURACY准确度为“粗略”级别，您可能需要适当更改清单中的位置权限。

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