show static method

dynamic show(BuildContext context, { Widget? loading, int? duration, Color? color, bool closable = false, })

显示 Loading loading - 自定义的 Loading 视图 duration - 指定毫秒后，自动隐藏。如果为 null，则不自动隐藏 color - loading 时的背景颜色，默认为 Colors.black54 closable - 是否可以通过返回按钮关闭 loading

Display Loading loading-custom loading view duration-automatically hide after specified milliseconds. If null, do not hide automatically color-background color when loading, default is Colors.black54 closable-Is it possible to close loading via the back button

Implementation

static show(BuildContext context,
    {Widget? loading, int? duration, Color? color, bool closable = false}) {
  if (!_isShow) {
    _isShow = true;
    showGeneralDialog(
      context: context,
      pageBuilder: (BuildContext buildContext, Animation<double> animation,
          Animation<double> secondaryAnimation) {
        final Widget pageChild = Builder(builder: (context) {
          _cacheContext = context;
          Widget widget = loading ?? _loading ?? CupertinoActivityIndicator();
          return WillPopScope(
            onWillPop: () async {
              if (closable) {
                hide();
              }
              return Future.value(false);
            },
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [widget],
            ),
          );
        });
        return pageChild;
      },
      barrierDismissible: false,
      barrierLabel:
          MaterialLocalizations.of(context).modalBarrierDismissLabel,
      barrierColor: (color ?? _backgroundColor ?? Colors.black38),
      transitionDuration: const Duration(milliseconds: 150),
      transitionBuilder: (BuildContext context, Animation<double> animation,
          Animation<double> secondaryAnimation, Widget child) {
        return FadeTransition(
          opacity: CurvedAnimation(
            parent: animation,
            curve: Curves.easeOut,
          ),
          child: child,
        );
      },
      useRootNavigator: true,
      routeSettings: null,
    );
    if (duration != null) {
      _timer = Timer(Duration(milliseconds: duration), () {
        hide();
      });
    }
  }
}