我正在实现一个隐藏的搜索栏。

在隐藏搜索栏的功能中,所有命令都可以正常运行,但通过命令带回该栏按钮的命令除外。

另外,UISearchBar.showCancelButton也无法正常工作,因此我不得不手动实现取消按钮。 (我已将搜索栏的委托设置为self)

这是代码:

func dismissSearch() {
    searchBar.text = ""
    view.endEditing(true)
    tagSearchResults = [Tag]()
    TagSearchFeed?.collectionView.reloadData()
    searchResultsContainer.isHidden = true
    hideSearchBar()
}



func showSearchBar() {
    searchBar.alpha = 0
    navigationItem.titleView = searchBar
    let cancelButton = UIBarButtonItem(title: "Cancel", style: .plain, target: self, action: #selector(searchBarCancelButtonClicked))
    cancelButton.tintColor = .white
    navigationItem.setRightBarButton(cancelButton, animated: true)
    navigationItem.setLeftBarButton(nil, animated: true)
    UIView.animate(withDuration: 0.5, animations: {
        self.searchBar.alpha = 1
    }, completion: { finished in
        self.searchBar.becomeFirstResponder()
    })
    self.searchResultsContainer.isHidden = false
}

func hideSearchBar() {
    navigationItem.setRightBarButton(self.searchButton, animated: true)
    navigationItem.setLeftBarButton(self.menuButton, animated: true)
    UIView.animate(withDuration: 0.3, animations: {
        self.navigationItem.titleView = nil
    }, completion: { finished in

    })

}

@objc func searchBarCancelButtonClicked() {
    dismissSearch()
}


我该如何解决这些问题?

最佳答案

事实证明,那些条形按钮项为零,我将出口更改为强壮,现在可以使用了。
从:

@IBOutlet var weak searchButton: UIBarButtonItem!
@IBOutlet var weak menuButton: UIBarButtonItem!


至:

@IBOutlet var searchButton: UIBarButtonItem!
@IBOutlet var menuButton: UIBarButtonItem!

关于ios - navigationItem.set_BarButton不起作用-swift,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/51021051/

10-10 21:12