requestLocationPermission method

Future<void> requestLocationPermission() 

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<!-- Android 10+ background location access (optional) -->
<uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" />

Implementation

Future<void> requestLocationPermission() async {
  await _channel.invokeMethod('$_name/requestLocationPermission');
}