Question

我正在尝试创建一个可以打印我当前的逻辑和纬度的应用，但我无法让它工作。我的代码是这样的： `public class MainActivity扩展了Activity {

private Button but = null;
private TextView txt=null;
String mprovider;
private static final String TAG = "Debug";

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Criteria criteria = new Criteria();
    criteria.setAccuracy(Criteria.ACCURACY_COARSE);
    final LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    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) {}
    };

    if (checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED)
    {
        locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListener);
    }
    mprovider = locationManager.getBestProvider(criteria, false);

    but = (Button) findViewById(R.id.btnLocation);
    txt=(TextView)findViewById(R.id.textView);
    txt.setText(mprovider);
    but.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            if (checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED)
            {
                Location location=locationManager.getLastKnownLocation(mprovider);
                txt.setText(location.getLatitude()+"  "+ location.getLongitude());

            }




}
    });

} }`

我基于这里的代码 http://www.viralandroid.com/2015/12/how-to-get-current-gps-location-programmatically-in-android.html 这也不起作用当我下载应用程序打印我的坐标时，它工作，但我注意到它要求我允许访问我的位置，我的应用程序没有做的事情。我错过了什么？清单是添加了这些行的默认值：

我不能得到我的GPS位置

0 个答案: