setScreenBrightness method

  1. @override
Future<void> setScreenBrightness(
  1. double brightness
)
override

Set screen brightness with double value.

The value should be within 0.0 - 1.0. Otherwise, RangeError.range will be throw.

This method is useful for user to change screen brightness.

When _channel.invokeMethod fails to get current brightness, it throws PlatformException with code and message:

Code: -2, Message: Unexpected error on null brightness Cannot read parameter from method channel map, or parameter is null

Code: -1, Message: Unable to change screen brightness Compare changed value with set value fail

Code: -10, Message: Unexpected error on activity binding Unexpected error when getting activity, activity may be null

Implementation

@override
Future<void> setScreenBrightness(double brightness) async {
  if (!brightness.isInRange(minBrightness, maxBrightness)) {
    throw RangeError.range(brightness, minBrightness, maxBrightness);
  }

  await pluginMethodChannel.invokeMethod(
      methodNameSetScreenBrightness, {"brightness": brightness});
}