从方法

Question

我有这个方法来获取用户位置，我想返回myLocation变量：

mFusedLocationClient.getLastLocation().addOnSuccessListener(new OnSuccessListener<Location>() {
        @Override
        public void onSuccess(Location location) {
            // Got last known location. In some rare situations this can be null.
            if (location != null) {
                double latitude = location.getLatitude();
                double longitude = location.getLongitude();

                LatLng mylocation = new LatLng(latitude, longitude);
            }
        }
    });

我在一个返回LatLng值的函数中有这个方法，但我无法从方法内部获取值。

Answer 1

声明Fused Location Client类

private Location currentLocation; 

public Location getCurrentLocation() {
    return currentLocation;
}

mFusedLocationClient.getLastLocation().addOnSuccessListener(new OnSuccessListener<Location>() {
        @Override
        public void onSuccess(Location location) {
            // Got last known location. In some rare situations this can be null.
            if (location != null) {
                 this.currentLocation= location;
            }
        }
    });

在getCurrentLocation（）之后处理当前位置LatLng

        if (getCurrentLocation()  != null) {
            double latitude = getCurrentLocation() .getLatitude();
            double longitude = getCurrentLocation() .getLongitude();

            LatLng mylocation = new LatLng(latitude, longitude);
        }