应用程序获取错误的位置,直到打开内置的Google Map应用程序

Question

我开发了一个用于查找设备当前位置的应用程序.我使用了Fused Location API来获取当前位置.

我面临着一个非常奇怪的问题,在一些设备中我得不到准确的当前位置,直到我打开内置谷歌地图,一旦我打开谷歌地图并返回我的应用程序,那时应用程序返回确切的位置.

这是我的位置请求.

mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(UPDATE_INTERVAL);
mLocationRequest.setFastestInterval(FATEST_INTERVAL);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
mLocationRequest.setSmallestDisplacement(DISPLACEMENT); // 10 meters

谁能告诉我有什么不对？非常感谢您的帮助.

Answer 1

所以 Waze 和我们过去使用 FusedLocation 时遇到了很多问题。API 已损坏。有些设备无法正确执行此操作。融合了很多继电器的活动识别无法正常工作并正确识别员工。我们最后切换回位置管理器 API。

这里是片段：

初始化位置管理器并开始在不同线程上请求更新。我亲自为每个提供商注册单独的侦听器

if (mLocationManager == null) {
        LOGGER.info("Location track,start called first time. Creating Location Manager");
        mLocationManager = (LocationManager) mContextWeakReference.get()
                .getSystemService(Context.LOCATION_SERVICE);

        mLocationHandlerThread
                = new HandlerThread("LocationThread", Thread.NORM_PRIORITY);
        mLocationHandlerThread.start();
        // Now get the Looper from the HandlerThread
        // NOTE: This call will block until the HandlerThread gets control and initializes its Looper
        Looper looper = mLocationHandlerThread.getLooper();
        Location networkLastKnownLocation = null;
        Location gpsLastKnownLocation = null;
        mGpsLocationListener = new GpsLocationListener();
        mNetworkLocationListener = new NetworkLocationListener();

        // Register the listener with the Location Manager to receive location updates
        if (mLocationManager.getAllProviders().contains(LocationManager.GPS_PROVIDER)) {
            mLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,
                    LOCATION_REQUEST_INTERVAL_MILLIS, SMALLEST_DISPLACEMENT_METERS,
                    mGpsLocationListener,
                    looper);

            gpsLastKnownLocation = mLocationManager
                    .getLastKnownLocation(LocationManager.GPS_PROVIDER);
        } else {
            setGpsProviderAvailable(false);
        }
        if (mLocationManager.getAllProviders().contains(LocationManager.NETWORK_PROVIDER)) {
            networkLastKnownLocation = mLocationManager
                    .getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
            mLocationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,
                    LOCATION_REQUEST_INTERVAL_MILLIS, SMALLEST_DISPLACEMENT_METERS,
                    mNetworkLocationListener,
                    looper);
        }

        setLastKnownLocationDifferentProviders(gpsLastKnownLocation,
                networkLastKnownLocation);

    }

听众是：

public class GpsLocationListener implements LocationListener {

    @Override
    public void onLocationChanged(Location location) {
        LOGGER.info("Location track ,onLocationChanged location={}", location);
        switch (location.getProvider()) {
            case LocationManager.GPS_PROVIDER:
                if (mLocationManager != null) {
                    mLocationManager.removeUpdates(mNetworkLocationListener);
                }
                break;
        }
        setLastKnownLocation(location);
    }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {
        LOGGER.info("onStatusChanged: {}, status: {}", provider, status);
    }

    @Override
    public void onProviderEnabled(String provider) {
        LOGGER.info("onProviderEnabled: " + provider);
        if (provider.equals(LocationManager.GPS_PROVIDER)) {
            setGpsProviderAvailable(true);
        }
    }

    @Override
    public void onProviderDisabled(String provider) {
        LOGGER.info("onProviderDisabled: " + provider);
        if (provider.equals(LocationManager.GPS_PROVIDER)) {
            setGpsProviderAvailable(false);
        }
    }
}

public class NetworkLocationListener implements LocationListener {

    @Override
    public void onLocationChanged(Location location) {
        LOGGER.info("Location track ,onLocationChanged location={}", location);
        switch (location.getProvider()) {
            case LocationManager.NETWORK_PROVIDER:
                setLastKnownLocation(location);
                break;
        }
    }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {
        LOGGER.info("onStatusChanged: {}, status: {}", provider, status);
    }

    @Override
    public void onProviderEnabled(String provider) {
        LOGGER.info("onProviderEnabled: " + provider);
        if (provider.equals(LocationManager.GPS_PROVIDER)) {
            setGpsProviderAvailable(true);
        }
    }

    @Override
    public void onProviderDisabled(String provider) {
        LOGGER.info("onProviderDisabled: " + provider);
        if (provider.equals(LocationManager.GPS_PROVIDER)) {
            setGpsProviderAvailable(false);
        }
    }
}

不要忘记取消注册并停止所有线程:)