showSimpleDialog method
Implementation
Future<void> showSimpleDialog(String tip,{String? title,String? cancelText}) async {
await showCupertinoDialog(
context: this,
builder: (c) {
return CupertinoAlertDialog(
title: Text(title ?? "提示"),
content: Text(tip),
actions: [
CupertinoDialogAction(onPressed: pop, child: Text(cancelText??'Cancel'))
],
);
},);
}