我正在尝试将UIBarButton项添加到导航栏.
这是我的导航栏类声明：
import UIKit
class NavigationBarController: UINavigationController {
override func viewDidLoad() {
super.viewDidLoad()
configureToolbar()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// #pragma mark - Navigation bar data source
func configureToolbar() {
let toolbarButtonItems = [
searchBarButtonItem
]
toolbar.setItems(toolbarButtonItems,animated: true)
}
var searchBarButtonItem: UIBarButtonItem {
return UIBarButtonItem(barButtonSystemItem: .Search,target: self,action: "barButtonItemClicked:")
}
}
编译器没有错误,但我得到的只是一个简单的导航栏.
如何显示UIBarButtonItem？
要将项添加到NavigationController的NavigationBar或添加到ViewController的NavigationBar,您需要首先浏览NavigationItem.尝试这个：
self.navigationItem.setRightBarButtonItems(navigationBarButtonItemsArray,animated: true) // Or if you just want to insert one item. self.navigationItem.setRightBarButtonItem(UIBarButtonItem(barButtonSystemItem: .Search,action: "barButtonItemClicked:"),animated: true)
要将按钮切换到左侧,只需将setRightBarButtonItem替换为setLeftBarButtonItem或setLeftBarButtonItems.
