show static method

void show(String message, { String title = "提示", ContextCallback? okCallback, VoidCallback? cancelCallback, bool cancelable = false, })

Implementation

static void show(String message, {String title="提示", ContextCallback? okCallback, VoidCallback? cancelCallback, bool cancelable = false}) {
  final context = _instance!.navigatorKey.currentState!.overlay!.context;
  List<Widget> actions = [];
  if(okCallback != null) {
    actions.add(FlatButton(
        onPressed: () {
          Navigator.of(context).pop();
          okCallback(context);
        },
        child: Text("确定")));
  }
  if(cancelCallback != null) {
    actions.add(FlatButton(onPressed: () {
      Navigator.of(context).pop();
      cancelCallback();
    }, child: Text("取消")));
  }
  final dialog = AlertDialog(
    title: Text(title),
    content: Text(message),
    actions: actions,
  );
  showDialog(context: context, barrierDismissible: cancelable, builder: (x) {
    return WillPopScope(
      onWillPop: () async => false,//关键代码
      child: dialog,
    );
  });
}