UIPopoverPresentationController should have a non-nil sourceView or barButtonItem set before the pre

时光不染

于 2021-03-16 17:51:38 发布

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分类专栏： # iOS 文章标签： ios swift

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‘UIPopoverPresentationController should have a non-nil sourceView or barButtonItem set before the presentation occurs.’

Bug场景 :ios 开发，iPad调用分享，Alert等系统弹板崩溃闪退，iPhone正常

大致是iPad Present的时候，需要挂到某个view上
解决方案:Present之前添加以下代码

//alert 是你的UIAlertController UIActivityViewController等
let isPad = ( UIDevice.current.userInterfaceIdiom == .pad)
if isPad {
   alert.popoverPresentationController?.sourceView = self.view
   alert.popoverPresentationController?.sourceRect = CGRect(x: 0, y:Int(UIScreen.main.bounds.size.height), width: Int(UIScreen.main.bounds.size.width), height: 30)
   alert.popoverPresentationController?.permittedArrowDirections = UIPopoverArrowDirection.any
}