android - 如何开发应用程序以查找 gps 位置

Question

我是andriod的新手，谁能教我如何创建一个应用程序，按一下按钮就可以找到gps位置。我找到了一些代码来查找位置，但不知道如何使用它。

public class GPS_Location extends Activity implements LocationListener {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_gps__location);

        LocationManager locationManager = (LocationManager)     getSystemService(Context.LOCATION_SERVICE);
        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.gps__location, menu);
        return true;
    }

    @Override
    public void onLocationChanged(Location location) {
        double latitude =location.getLatitude();
        double longitude =location.getLongitude();

        Log.i("Geo_Location", "Latitude: " + latitude + ", Longitude: " + longitude);
    }

    @Override
    public void onProviderDisabled(String provider) {
        // TODO Auto-generated method stub
    }

    @Override
    public void onProviderEnabled(String provider) {
        // TODO Auto-generated method stub
    }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {
        // TODO Auto-generated method stub
    }
}

Answer 1

LocationManager lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE); 
Location location = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
double latitude = location.getLatitude();
double longitude = location.getLongitude();

您将在清单中需要这些权限：

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" />