tabBarController didSelect 没有被调用

问题描述

我遇到了问题

tabBarController(_ tabBarController: UITabBarController, didSelect viewController: UIViewController)

委托解雇.问题在于当我尝试使用 self.tabBarController?.selectedIndex 并以编程方式更改选项卡时.一旦我使用 selectedIndex 并返回上一个选项卡并单击 tabBarItem ，委托就不再触发.仅当我不使用 selectedIndex 时委托才会触发，但是一旦我使用它，即使我点击 tabBar 项目，didSelect 委托也不会再次触发.有什么建议?感谢您的帮助！

delegate firing. The problem lies when I try to use self.tabBarController?.selectedIndex and change a tab programmatically. Once I use selectedIndex and go back to a previous tab and click on the tabBarItem the delegate does not fire anymore. Delegate only fires if I do not use selectedIndex but once i use it the didSelect delegate never fires again even if I tap on the tabBar item. Any suggestions? Thanks for your help!

推荐答案

你需要像下面这样以编程方式调用委托例如.我需要选择位于第 4 个索引的 SettingsTab，我可以使用此代码实现.这里 didSelect 也以编程方式调用

You need to call delegate programmatically like belowFor eg. I need to select SettingsTab which is at 4th index, i can achieve using this code. Here didSelect is also called programmatically

if let tabbarC = self.tabBarController{
        tabbarC.selectedIndex = 4
        let setting = tabbarC.viewControllers![4]
        self.tabBarController(tabbarC, didSelect: setting)

}

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