1. 利用系统的方法来创建UIBarButtonItem
//navigationController?.navigationBar.tintColor = UIColor.orange
navigationItem.leftBarButtonItem = UIBarButtonItem(title: "注册", style: UIBarButtonItemStyle.plain, target: self,action: #selector(BaseViewController.registerWillClick))
navigationItem.rightBarButtonItem = UIBarButtonItem(title: "登录", style: UIBarButtonItemStyle.plain, target: self,action: #selector(BaseViewController.logionWillClick))
2. 设置导航条和工具条的外观，因为外观设定全局有效，所以应该在程序一进来就设定，在AppDelegate里面设施
UINavigationBar.appearance().tintColor = UIColor.orange
UITabBar.appearance().tintColor = UIColor.orange
3.带图片的导航条内容 （一）
带图片的导航条内容
// MARK: 初始化导航条内容
private func setUpNav(){
navigationItem.leftBarButtonItem = UIBarButtonItem(image: UIImage(named:"navigationbar_friendattention"),style:UIBarButtonItemStyle.plain,target:self,action:#selector(HomeViewController.KK))
}
@objc private func KK(){
print("点击了左边")
}
4.带图片的导航条内容: 利用button （二）
带图片的导航条内容: 利用button
let leftBtn = UIButton()
leftBtn.setImage(UIImage(named: "navigationbar_friendattention"), for: UIControlState.normal)
leftBtn.setImage(UIImage(named: "navigationbar_friendattention_highlighted"), for: UIControlState.highlighted)
leftBtn.addTarget(self, action: #selector(HomeViewController.leftAction), for: UIControlEvents.touchUpInside)
// button自适应大小
leftBtn.sizeToFit()
navigationItem.leftBarButtonItem = UIBarButtonItem(customView:leftBtn)
// 2.定义右边的按钮
let rightBtn = UIButton()
rightBtn.setImage(UIImage(named: "navigationbar_pop"), for: UIControlState.normal)
rightBtn.setImage(UIImage(named: "navigationbar_pop_highlighted"), for: UIControlState.highlighted)
// button自适应大小
rightBtn.sizeToFit()
rightBtn.addTarget(self, action: #selector(HomeViewController.rightAction), for: UIControlEvents.touchUpInside)
navigationItem.rightBarButtonItem = UIBarButtonItem(customView:rightBtn)
@objc private func leftAction(){
print("点击了左边")
}
@objc private func rightAction(){
print("点击了右边")
}
5. UIBarButtonItem 在控制器里面的封装
1.封装
// MARK: 导航栏方法的封装
private func create(name: String,target: Any?, action: Selector) -> UIBarButtonItem{
let rightBtn = UIButton()
rightBtn.setImage(UIImage(named: name), for: UIControlState.normal)
rightBtn.setImage(UIImage(named: name + "_highlighted"), for: UIControlState.highlighted)
// button自适应大小
rightBtn.sizeToFit()
rightBtn.addTarget(target, action: action, for: UIControlEvents.touchUpInside)
return UIBarButtonItem(customView:rightBtn)
}
2.方法的实现
@objc private func leftActi1on(){
print("点击了左边")
}
3.调用
navigationItem.leftBarButtonItem = create(name: "navigationbar_friendattention", target: self, action: #selector(HomeViewController.leftActi1on))
6. UIBarButtonItem 类目的封装
// 1.类目的创建
import UIKit
extension UIBarButtonItem{
class func createBarbuttonItem(name: String,target: Any?, action: Selector) -> UIBarButtonItem{
let rightBtn = UIButton()
rightBtn.setImage(UIImage(named: name), for: UIControlState.normal)
rightBtn.setImage(UIImage(named: name + "_highlighted"), for: UIControlState.highlighted)
// button自适应大小
rightBtn.sizeToFit()
rightBtn.addTarget(target, action: action, for: UIControlEvents.touchUpInside)
return UIBarButtonItem(customView:rightBtn)
}
}
// 2. 调用类的封装来创建 UIBarButtonItem
navigationItem.leftBarButtonItem = UIBarButtonItem.createBarbuttonItem(name: "navigationbar_friendattention", target: self, action: #selector(HomeViewController.leftAction))
// 3.方法的实现
@objc private func leftAction(){
print("点击了左边")
}