如何在android中获取当前位置？

Question

I am using the following code to get my current location, without GPS, but i want to show the co-ordinates in a toast. i have tried this code, but it shows my package name instead of co-ordinates!

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    LocationManager locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);

    // Define a listener that responds to location updates

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

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

    public void onProviderEnabled(String provider) {}

    public void onProviderDisabled(String provider) {}

    };

    // Register the listener with the Location Manager to receive location updates
    locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListener);
    Toast.makeText(getBaseContext(), "location is:"+locationListener, Toast.LENGTH_LONG).show();
}

Answer 1

You only have the location in your onLocationChanged() callback.

// Acquire a reference to the system Location Manager
LocationManager locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);

// Define a listener that responds to location updates
LocationListener locationListener = new LocationListener() {

     public void onLocationChanged(Location location) {

        // Called when a new location is found by the network location provider.
        Toast.makeText(getBaseContext(), "location is:"+location, Toast.LENGTH_LONG).show();
    }

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

    public void onProviderEnabled(String provider) {}

    public void onProviderDisabled(String provider) {}
};

// Register the listener with the Location Manager to receive location updates
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListener);

Answer 2

You are trying to toast the locationListener object.You have to craete a Location location; object and toast location.getLatitude() and location.getLongitude() method while toasting.

Answer 3

Your current code makes a toast when the LocationListener is registered, and calls Object.toString() on the listener, which just returns the class name of the listener.

You want to move the Toast.makeText(... line to inside the onLocationChanged function, and change the text to "location is:"+location , or maybe "location is: "+location.getLatitude()+","+location.getLongitude() .

Also, this code will continue to make Toasts each time he gets a new location. You might want to either use LocationManager.requestSingleUpdate to only make a single toast, or put a LocationManager.removeUpdates in the onDestroy so that it stops when the activity is finished.

Answer 4

create FMLocationListener class first.

 private static class FMLocationListener implements LocationListener {

                public void onLocationChanged(Location location) {

                }

                public void onProviderDisabled(String provider) {

                }

            public void onProviderEnabled(String provider) {

            }

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

            }

        }

then use the following code