setScreenBrightness method Null safety

Future<void> setScreenBrightness(
  1. double value
)

Set screen brightness. The range of value is 0.0, 1.0

Implementation

static Future<void> setScreenBrightness(double value) {
  if (value < 0.0 || value > 1.0) {
    return Future.error(ArgumentError.value(
        value, "brightness value must be not null and in range [0.0, 1.0]"));
  } else if (Platform.isAndroid || Platform.isIOS) {
    return _channel.invokeMethod(
        "setBrightness", <String, dynamic>{'brightness': value});
  }
  return Future.value();
}