我有一个独特的情况,如果我可以在声明后将属性添加到ThemeData变量中,则可以节省很多时间。
当前,我的ThemeData是在themes.dart文件中声明的:
ThemeData lightTheme() {
return ThemeData(
scaffoldBackgroundColor: Colors.white,
fontFamily: "Open Sans",
appBarTheme: appBarTheme(),
textTheme: textTheme(),
inputDecorationTheme: inputDecorationTheme(),
visualDensity: VisualDensity.adaptivePlatformDensity,
);
}
TextTheme textTheme() {
return TextTheme(
headline1: TextStyle(
color: Color(0xFF000000),
//fontSize: getProportionateScreenWidth(25) I would like to declare this in a different file
fontWeight: FontWeight.normal),
)
}
ThemeData随后在main.dart中以典型主题使用:lightTheme()作为MaterialApp属性
然后我想在我使用headline1 textTheme的body.dart文件中更改headline1 TextTheme的fontSize:
Text(
'Hello,',
textAlign: TextAlign.left,
style: Theme.of(context).textTheme.headline1, //I want to add a line for fontSize here
),
我该怎么做?非常感谢您的帮助:)
答案 0 :(得分:1)
将.copyWith()
用作:
style: Theme.of(context).textTheme.headline1.copyWith(fontSize: 17)