isPermissionGranted method Null safety
Returns the status of the Do not Disturb access
permission for this app.
bool? isPermissionGranted = await RealVolume.isPermissionGranted();
Implementation
static Future<bool?> isPermissionGranted() async {
if (Platform.isIOS) return null;
final bool result =
(await _methodChannel.invokeMethod('isPermissionGranted')) ?? false;
return result;
}