解决自定义导航栏左侧按钮图标变形问题
1.创建底图View
2.把button添加到底图上
3.创建UIbarbuttonitem，customView = 底图view
4.设置导航栏的左侧item = 3
自定义导航栏
func setupNaviBarAnoutNextVc(nextVc:UIViewController,namePoor:String,poorBackSelector:Selector) {
//设置导航栏颜色
nextVc.navigationController?.navigationBar.barTintColor = .white
nextVc.navigationController?.navigationBar.isHidden = false
//导航栏阴影线的设置
nextVc.navigationController?.navigationBar.shadowImage = UIImage.init()
//穿透效果设置
nextVc.navigationController?.navigationBar.isTranslucent = false
let rootNaviitemColor =UIColor.darkGray
let fontSize =UIFont.systemFont(ofSize:19)
//title 属性
nextVc.navigationController?.navigationBar.titleTextAttributes = [NSAttributedString.Key.foregroundColor:rootNaviitemColor,NSAttributedString.Key.font : fontSize]
nextVc.navigationItem.title= namePoor
//解决导航栏leftbarbutton图片变形问题
let customBtn =UIButton.init(type: .custom)
customBtn.frame= CGRect.init(x:-5, y:0, width:44, height:44)
customBtn.addTarget(nextVc, action:poorBackSelector, for: .touchUpInside)
customBtn.setBackgroundImage(UIImage.init(named:"goback"), for:.normal)
let leftv =UIView.init(frame:CGRect.init(x:0, y:0, width:50, height:44))
leftv.addSubview(customBtn)
let lop =UIBarButtonItem.init(customView:leftv)
nextVc.navigationItem.leftBarButtonItem = lop
}
