无法获取 GPS 坐标

Question

我想获取用户坐标，gps 已打开，我已经请求了它具有权限的权限。 位置已设置，我在谷歌地图等其他应用程序上有我的位置，但在我的应用程序中，它不起作用：

public boolean startService() {
try {
FetchCordinates fetchCordinates = new FetchCordinates();
fetchCordinates.execute();
return true;
} catch (Exception error) {
return false;
}
}
LocationManager mlocManager = null;
LocationListener mlocListener;
mlocManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
mlocListener = new MyLocationListener();
mlocManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, mlocListener);
if (mlocManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
startService();
} 
public class FetchCordinates extends AsyncTask<String, Integer, String> {
AlertDialog.Builder a;
AlertDialog dialog;
public double lati = 0.0;
public double longi = 0.0;
public LocationManager mLocationManager;
public FetchCordinates.VeggsterLocationListener mVeggsterLocationListener;
@Override
protected void onPreExecute() {
mVeggsterLocationListener = new FetchCordinates.VeggsterLocationListener();
mLocationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
mLocationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER, 0, 0,
mVeggsterLocationListener);
a = new AlertDialog.Builder(Admins.this);
a.setMessage("در حال  به دست آوردن موقعیت جغرافیایی...");
a.setPositiveButton(("بیخیال"), new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
FetchCordinates.this.cancel(true);
}
});
dialog = a.show();
TextView messageText = (TextView) dialog.findViewById(android.R.id.message);
messageText.setGravity(Gravity.RIGHT);
messageText.setTypeface(typeface);
}
@Override
protected void onCancelled() {
System.out.println("Cancelled by user!");
dialog.dismiss();
mLocationManager.removeUpdates(mVeggsterLocationListener);
}
@Override
protected void onPostExecute(String result) {
dialog.dismiss();
Log.v("this","got the location");
}
@Override
protected String doInBackground(String... params) {
// TODO Auto-generated method stub
while (this.lati == 0.0 && !isCancelled()) {
}
return null;
}
public class VeggsterLocationListener implements LocationListener {
@Override
public void onLocationChanged(Location location) {
int lat = (int) location.getLatitude(); // * 1E6);
int log = (int) location.getLongitude(); // * 1E6);
int acc = (int) (location.getAccuracy());
String info = location.getProvider();
try {
// LocatorService.myLatitude=location.getLatitude();
// LocatorService.myLongitude=location.getLongitude();
lati = location.getLatitude();
longi = location.getLongitude();
} catch (Exception e) {
// progDailog.dismiss();
// Toast.makeText(getApplicationContext(),"Unable to get Location"
// , Toast.LENGTH_LONG).show();
}
}
@Override
public void onProviderDisabled(String provider) {
Log.i("OnProviderDisabled", "OnProviderDisabled");
}
@Override
public void onProviderEnabled(String provider) {
Log.i("onProviderEnabled", "onProviderEnabled");
}
@Override
public void onStatusChanged(String provider, int status,
Bundle extras) {
Log.i("onStatusChanged", "onStatusChanged");
}
}
}

它向我显示了用于获取位置的对话框，但它从未获得当前位置。 我的代码有什么问题？

Answer 1

请提供您在Manifest.xml文件中写的内容。也许权限有问题。

你需要android.permission.ACCESS_COARSE_LOCATION或android.permission.ACCESS_FINE_LOCATION

对于 API 5.0 或更高版本，还：

android.hardware.location.gps