我有 navigation bar 和 search 按钮 . 单击它会显示 searchbar 并在取消按钮上单击它隐藏 . 但出于某种原因，如果 searchbar 被隐藏，那么导航栏titleview也会隐藏 . 什么可能导致这个？起初我实际上希望它从右边滑入 titleView 但我无法实现它所以我就这样做了 .
这是显示它并隐藏它的代码：
//Create searchbar
func createSearchBar(){
searchBar.showsCancelButton = true
searchBar.tintColor = UIColor(red:0.184, green:0.996, blue:0.855, alpha:1.00)
searchBar.placeholder = "Search brands"
searchBar.delegate = self
searchBar.hidden = false
searchBar.alpha = 0
navigationItem.titleView = searchBar
navigationItem.setLeftBarButtonItem(menuButton, animated: true)
navigationItem.setRightBarButtonItem(searchButtton, animated: true)
UIView.animateWithDuration(0.5, animations: {
self.searchBar.alpha = 1
}, completion: { finished in
self.searchBar.becomeFirstResponder()
})
}
//Searchbar hide
func hideSearchBar() {
navigationItem.setLeftBarButtonItem(menuButton, animated: true)
navigationItem.setRightBarButtonItem(searchButtton, animated: true)
searchBar.alpha = 0
UIView.animateWithDuration(1, animations: {
}, completion: { finished in
})
}
//Searchbar cancel button
func searchBarCancelButtonClicked(searchBar: UISearchBar) {
hideSearchBar()
searchBar.endEditing(true)
snusBrandsTableView.reloadData()
}
1 回答
如果要在隐藏
searchBar时设置navigationItemnavigationItem，则需要将titleView设置为nil，然后设置 Headers .