UIAction 工作表未在 iPad 中单击条形按钮项目时关闭

Posted 2023-03-14

【中文标题】UIAction 工作表未在 iPad 中单击条形按钮项目时关闭

【英文标题】：UIAction sheet not dismissing on bar button item click in iPad

【发布时间】：2017-08-02 11:29:41

【问题描述】：

我以编程方式创建了一个带有左右栏按钮项的导航栏。单击右侧UIBarButtonItem 时，将显示操作表，然后如果我单击左键，则操作表仍然存在。它不会解雇。但是，如果我点击视图控制器中的其他任何地方，动作表就会被取消。该问题仅适用于 iPad。这是右栏按钮单击时调用的函数。

func showActionButtons()
    
        actionSheetController = UIAlertController(title: Constants.kPleaseSelect, message: nil, preferredStyle: .actionSheet)

        let cancelActionButton = UIAlertAction(title: Constants.kCancel, style: .cancel)  action -> Void in
        
        actionSheetController.addAction(cancelActionButton)

        let cameraActionButton = UIAlertAction(title: "Camera", style: .default)  action -> Void in
            //open camera
            self.checkCamera()
        
        actionSheetController.addAction(cameraActionButton)


        let galleryActionButton = UIAlertAction(title: "Gallery", style: .default)  action -> Void in

            //open gallery
            self.checkGallery()
        
        actionSheetController.addAction(galleryActionButton)

        actionSheetController.popoverPresentationController?.barButtonItem = self.navigationItem.rightBarButtonItem

        self.present(actionSheetController, animated: true, completion: nil)
    

【问题讨论】：

显示你尝试过的代码

在 UIViewController 中你是否打开了 UIActionSheet？

在 ViewController 中，我有 2 个条形按钮项，单击右侧条形按钮显示操作表。单击左侧条形按钮项时，我无法关闭操作表。

@lakshmi - 只显示你尝试过的代码，UIbarbutton 没有任何 UIcontrols hiearchy，所以添加你的代码

试试这个： if (self.respondsToSelector(Selector("popoverPresentationController"))) self.popoverPresentationController?.passthroughViews = nil else // 对于ios8-pre版本，我们需要传递popoverController来自 segue self.popoverController?.passthroughViews = nil l

的引用

【参考方案1】：

//设置RightBar Item带图片

private func setRightBarSelectAllItem() 
    let image = UIImage(named: "ic_nav_select_all")?.withRenderingMode(.alwaysOriginal)
    let backItem = UIBarButtonItem(image: image, style: .plain, target: self, action: #selector(onBtnSelectAll(_:)))
    self.navigationItem.rightBarButtonItem = backItem
 

//IBAction

@IBAction func onBtnSelectAll(_ sender: UIBarButtonItem) 
    showActionSheet(sender: sender)

//动作表

private func showActionSheet(sender : UIBarButtonItem) 
    
    let alt = UIAlertController(title: nil, message: nil, preferredStyle: .actionSheet)
    let select = UIAlertAction(title: "Select", style: .default)  (act) in
        
    
    
    let selectAll = UIAlertAction(title: "Select All", style: .default)  (act) in
        
    
    
    let deleteAll = UIAlertAction(title: "Delete All", style: .destructive)  (act) in
        
    
    
    let cancel = UIAlertAction(title: "Cancel", style: .cancel)  (act) in
  
    
    
    alt.addAction(select)
    alt.addAction(selectAll)
    alt.addAction(deleteAll)
    alt.addAction(cancel)

    alt.popoverPresentationController?.barButtonItem = sender
    
    self.present(alt, animated: true, completion: nil)