Android: How to initialize a variable of type “Location” (other than making it equal to null)

问题

I'm looking to test some code I've written and to do so I need to construct a variable of type Location and to give it a long / lat value but I'm unsure how I would do so. Any ideas?

回答1:

The API documentation is quite clear on this. First create a new Location instance:

Location loc = new Location("dummyprovider");

And then use the setter methods to set the location parameters you need, e.g.:

loc.setLatitude(20.3);
loc.setLongitude(52.6);

回答2:

Location object = new Location("service Provider");

it will create an object of Type Location that contains the initial Latitude and Longitude at location '0' to get the initial values use

double lat = object.getLatitude();
double lng = object.getLongitude();

回答3:

You can write a method:

Location createNewLocation(double longitude, double latitude) {
    Location location = new Location("dummyprovider");
    location.setLongitude(longitude);
    location.setLatitude(latitude);
    return location;
}

And then call it:

Location myLoc = createNewLocation(dLong, dLati);

Or you can use string with Double.parse():

Location myLoc = createNewLocation(Double.parse("s.Long"), Double.parse("s.Lati"));

回答4:

In Kotlin using LocationManager class you can pass the required location provider like:

val location = Location(LocationManager.NETWORK_PROVIDER) // OR GPS_PROVIDER based on the requirement
location.latitude = 42.125
location.longitude = 55.123

来源：https://stackoverflow.com/questions/2985302/android-how-to-initialize-a-variable-of-type-location-other-than-making-it-e

标签

android

geolocation