flutter 改变状态栏系统的字体颜色

 // 状态栏字体白色
  static const SystemUiOverlayStyle light = SystemUiOverlayStyle(
    systemNavigationBarColor: Color(0xFF000000),
    systemNavigationBarDividerColor: null,
    statusBarColor: null,
    systemNavigationBarIconBrightness: Brightness.light,
    statusBarIconBrightness: Brightness.light,
    statusBarBrightness: Brightness.dark,
  );

//  状态栏字体黑色
  static const SystemUiOverlayStyle dark = SystemUiOverlayStyle(
    systemNavigationBarColor: Color(0xFF000000),
    systemNavigationBarDividerColor: null,
    statusBarColor: null,
    systemNavigationBarIconBrightness: Brightness.light,
    statusBarIconBrightness: Brightness.dark,
    statusBarBrightness: Brightness.light,
  );

2.在main.dart中 runApp（）方法下写，这样就可以全局状态栏字体颜色都是白色了，如果不一样的页面可以直接将这个引入到需要的页面，改成其他的颜色

    //白色
    SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle.light);