如何根据明暗模式将 appBar 标题图像设置为另一个图像？

Question

我正在尝试在启用暗模式时启用暗模式图像变体，并在启用光时启用亮背景图像。有什么办法可以在颤振中做到这一点

           onTap: () {
          if (Theme.of(context).brightness == Brightness.dark) {
            setBrightness(Brightness.light);
            setting.value.brightness.value = Brightness.light;
            AppBar(
              title: Image.asset('assets/img/gc.png', height: 100,));
          } else {
            setting.value.brightness.value = Brightness.dark;
            setBrightness(Brightness.dark);
            AppBar(
              title: Image.asset('assets/img/cgold.png', height: 100,),);
          }
          setting.notifyListeners();

((工作解决方案))

    title: Image.asset(Theme.of(context).brightness == Brightness.dark
        ? ('assets/img/gold.png')
        : ('assets/img/white.png'), height: 100,),

这只是简单地放在 appBar 小部件中 :)

Answer 1

试试看是否可行

bool light = true;

...
 Widget build(BuildContext context) {
    return MaterialApp(theme: light = true ? ThemeData.light() : ThemeData.dark(),
      ...
      AppBar(
              title: light = true ? Image.asset('assets/img/gc.png', height: 100,) : Image.asset('assets/img/cgold.png', height: 100,),)
      ...
    );
  }