init method
Implementation
SilToast init(GlobalKey<NavigatorState> navigatorKey,
{Color? backgroundColor, TextStyle? textStyle}) {
_instance.navigatorKey = navigatorKey;
// 背景颜色
backgroundColor ??= Color.fromRGBO(0, 0, 0, 0.6);
_instance.backgroundColor = backgroundColor;
// 文本样式
textStyle ??= TextStyle(
color: Colors.white,
fontSize: 14,
fontWeight: FontWeight.normal,
decoration: TextDecoration.none);
_instance.textStyle = textStyle;
return _instance;
}