除非打开GPS，否则融合的位置提供程序将无法获取位置 [英] Fused Location Provider not getting location unless GPS is on

问题描述

因此，我已经实现了新的Fused Location Provider API以获取用户的位置，但是由于某种原因，除非GPS开启，否则我无法获得任何位置.并非总是这样，用户是否会打开GPS，我不想每次加载应用程序时都要求他们打开GPS. 如何告诉API向其提供任何可用的提供程序的位置?

So I have implemented the new Fused Location Provider API to get a location of the user but for some reason, I cannot get any location unless the GPS is on. Not always, will users have their GPS on and I would like to not have to ask them to turn their GPS on every time the load the app. How can I tell the API to give me a location with whatever provider it has available?

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;
    }
}

推荐答案

我遇到了与您相同的问题，这根本不是问题. Android曾经有一个GPS按钮，可让您直接控制它，但是他们将GPS替换为一个具有不同功能的位置"按钮. 为了获得任何类型的位置，您必须将其打开. 像您一样，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

I had the same issue like you, which is not an issue at all. Android used to have a GPS button that let you control it directly, but they replaced it with a Location button which works different. In order to get any type of location, you must turn it on. Like you, I thought the Location button turns on and off the GPS only, but that's not the case. You can control the GPS by changing the location mode: 1. High accuracy (GPS, Wi-Fi and mobile networks) 2. Power Saving (Wi-Fi and mobile networks) 3. GPS only

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