但我得到的是

Question

使用Samsung S3和Android Google Map V2（使用＆＃34; LocationClient＆＃34;获取位置）。它的功能完全正常，除了

室内，第一次更新位置（不是来自LocationManager的getLastLocation（））非常非常慢，甚至没有更新。（GPS打开，wifi关闭）
室内，第一次更新地点时，开启WIFI（甚至没有连接任何热点）。

我按照下面的教程进行了第一次位置更新（不是来自LocationManager的getLastLocation（））速度在室外时很好。

（谷歌教程） https://developers.google.com/maps/documentation/android/location和 http://developer.android.com/training/location/receive-location-updates.html

根据谷歌此处https://developers.google.com/maps/documentation/android/start，它说

android.permission.ACCESS_COARSE_LOCATION 允许API使用WiFi或移动单元格数据（或两者）来确定设备的位置。

android.permission.ACCESS_FINE_LOCATION 允许API使用全球定位系统（GPS）确定设备在非常小的区域内的位置。

因此，我认为它应该从NETWORK和GPS更新位置。

========================

但我得到的是

这是对的吗？

感谢...

========================

更新

根据Google Maps Android API v2 creating a new LocationSource。

现在，我不使用＆＃34; LocationClient＆＃34;并设置另一个＆＃34; LocationSource＆＃34;到谷歌地图。现在谷歌地图即使在室内也可以非常快速地接收位置，并且无需开启WIFI。

Answer 1

这是我用于locationlistener的内容，使用与您相同的权限。

private void startLocationListener() {

    userPosition.setPosition(myPosition);

    // Get the location manager
    locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);

    locationListener = new LocationListener() {
        public void onLocationChanged(Location location) {
            // Called when a new location is found by the network location provider.


            if(currLocation != null)
            {
                boolean better = isBetterLocation(location, currLocation);
                if(better)
                {

                    currLocation.set(location);
                    myPosition = new LatLng(currLocation.getLatitude(), currLocation.getLongitude());
                    userPosition.setPosition(myPosition);
                }
            }
            else
            {
                currLocation = location;
                myPosition = new LatLng(currLocation.getLatitude(), currLocation.getLongitude());
                userPosition.setPosition(myPosition);
            }

        }

        public void onStatusChanged(String provider, int status, Bundle extras) {}

        public void onProviderEnabled(String provider) {}

        public void onProviderDisabled(String provider) {}
    };


    locationManager.requestLocationUpdates(GPSPROVIDER, 5000, 0, locationListener);
    locationManager.requestLocationUpdates(NETPROVIDER, 30000, 0, locationListener);

}

protected boolean isBetterLocation(Location location, Location currentBestLocation) {
    if (currentBestLocation == null) {
        // A new location is always better than no location
        return true;
    }

    // Check whether the new location fix is newer or older
    long timeDelta = location.getTime() - currentBestLocation.getTime();
    boolean isSignificantlyNewer = timeDelta > TIME;
    boolean isSignificantlyOlder = timeDelta < -TIME;
    boolean isNewer = timeDelta > 0;

    // If it's been more than two minutes since the current location, use the new location
    // because the user has likely moved
    if (isSignificantlyNewer) {
        return true;
        // If the new location is more than two minutes older, it must be worse
    } else if (isSignificantlyOlder) {
        return false;
    }

    // Check whether the new location fix is more or less accurate
    int accuracyDelta = (int) (location.getAccuracy() - currentBestLocation.getAccuracy());
    boolean isLessAccurate = accuracyDelta > 0;
    boolean isMoreAccurate = accuracyDelta < 0;
    boolean isSignificantlyLessAccurate = accuracyDelta > 200;

    // Check if the old and new location are from the same provider
    boolean isFromSameProvider = isSameProvider(location.getProvider(),
            currentBestLocation.getProvider());

    // Determine location quality using a combination of timeliness and accuracy
    if (isMoreAccurate) {
        return true;
    } else if (isNewer && !isLessAccurate) {
        return true;
    } else if (isNewer && !isSignificantlyLessAccurate && isFromSameProvider) {
        return true;
    }
    return false;
}

Android谷歌地图V2位置更新GPS？网络？

但我得到的是

更新

1 个答案: