推动视图控制器两次 [英] Pushing View Controller Twice

问题描述

在我的应用中，我遇到以下错误的问题：

Within my app I'm having an issue with the following error:

Pushing the same view controller instance more than once is not supported

这是一个来自少数用户的错误报告。我们试图复制它但不能（双击按钮等）。这是我们用来打开视图控制器的行：

It's a bug report that's comeback from a few users. We've tried to replicate it but can't (double tapping buttons etc). This is the line we use to open the view controller:

let storyboard = UIStoryboard(name: "Main", bundle: nil)
let editView = storyboard.instantiateViewControllerWithIdentifier("EditViewController") as! EditViewController
editView.passedImage = image
editView.navigationController?.setNavigationBarHidden(false, animated: false)
if !(self.navigationController!.topViewController! is EditViewController) {
   self.navigationController?.pushViewController(editView, animated: true)
}

任何人都有任何想法？我已经完成了一些研究并且我们已经涵盖了Stack上的大多数答案，因此对于如何调查而言有点不知所措。

Anybody have any ideas? I've done a bit of research and most answers on Stack we've covered so are at a bit of a loss for how to investigate.

推荐答案

试试这个以避免两次推送同一个VC：

Try this to avoid pushing the same VC twice:

if !(self.navigationController!.viewControllers.contains(editView)){
    self.navigationController?.pushViewController(editView, animated:true)
}

这篇关于推动视图控制器两次的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！