修改 AppBar中的 brightness属性 是个 枚举 有 Dark, 和 Brightness 两个属性bash
/// Describes the contrast of a theme or color palette.
enum Brightness {
/// The color is dark and will require a light text color to achieve readable
/// contrast.
///
/// For example, the color might be dark grey, requiring white text.
dark,
/// The color is light and will require a dark text color to achieve readable
/// contrast.
///
/// For example, the color might be bright white, requiring black text.
light,
}
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未使用AppBar 可使用 SystemUiOverlayStyle 更改状态栏颜色ui
return AnnotatedRegion<SystemUiOverlayStyle>(
value: SystemUiOverlayStyle.dark,
child: Material(child: Scaffold(body: loginMain(),),),
);
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记得导入 下面这个头文件spa
import 'package:flutter/services.dart';
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