如何重新加载 ui 视图的内容 Swift [英] How to reload a ui view's content Swift

问题描述

我有一个视图控制器，里面有滚动视图，滚动视图有一个视图.因此，视图有很多按钮和标签，这些按钮和标签根据来自 api 的数据显示.按下按钮后我有一个按钮，我想重新加载视图(它的内容).

I have a view controller which has scroll view in it, and the scroll view has a view. So, view has a lot of buttons and labels which are being showed depending on data which comes from api. And I have a button after pressing it, I want to reload a views (it's content).

推荐答案

一种简单的 hack 并且不推荐的方法是这样做

one of the easy hack and NOT the recommended way is to do

self.view.setNeedsLayout()

你也可以做 self.viewDidLoad() 或 self.viewWillAppear(true)

你可以使用的不同推荐方法如下

well the different recommended approaches you can use are the following

委托KVO通知

另一种方法是使用 tableView 和用户 reloadData()

The other way would be to use a tableView and user reloadData()

委托:https://www.andrewcbancroft.com/2015/04/08/how-delegation-works-a-swift-developer-guide

KVO:https://cocoacasts.com/key-value-observing-kvo-and-swift-3/

通知:http://dev.iachieved.it/iachievedit/notifications-and-userinfo-with-swift-3-0/

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