MainViewController 有没有办法知道何时调用了按下 IBAction 函数? [英] Is there a way for the MainViewController to know when a press IBAction function has been called?

问题描述

我有一个自定义 UIView，它有一个 press 方法.这是添加到主 Google mapView 的子视图.调用此方法时，我想在主 ViewController 中调用函数或设置全局变量.

I have a custom UIView which has a press method. This is a subview added to the main Google mapView. When this method is called, I would like to either call a function or set a global variable in the main ViewController.

任何反馈将不胜感激.

推荐答案

1. 内置NotificationCenter API，用于在调用press 方法时广播 通知.

1. Built-in NotificationCenter API to broadcast notifications whenever the press method is called.

let nofitication = NotificationCenter.default
nofitication.post(name: Notification.Name("pressMethodCalled"), object: nil)

注册通知:

nofitication.addObserver(self, selector: #selector(your_method_name), name: Notification.Name("pressMethodCalled"), object: nil)

1. 代表:一对一.在这里阅读更多 - https://medium.com/@jamesrochabrun/implementing-delegates-in-swift-step-by-step-d3211cbac3ef

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