Question

我已通过故事板添加了自定义导航栏。我期待屏幕上的内容自动向下移动。但它完全覆盖了屏幕顶部的内容..是否有一行清晰的代码可以自动在导航栏和视图本身之间创建间距？

Answer 1

你可能听说过Cocpods，我觉得这是一个更好的方法去cutom导航栏。您只需要实现协议并提供导航栏所需的规范仔细阅读以下内容

https://cocoapods.org/pods/resizable-navigation-bar

Answer 2

只需从viewDidLoad调用此方法：

func createNavBar() {

        let leftNavigationButton =  UIButton()
        leftNavigationButton.setImage(UIImage(named: "ic_back.png"), forState: .Normal)
        leftNavigationButton.frame = CGRectMake(10, 10, 20, 15)
        leftNavigationButton.addTarget(self, action: "onBackButtonPressed:", forControlEvents: UIControlEvents.TouchUpInside)
        let customBarItem = UIBarButtonItem(customView: leftNavigationButton)
        self.navigationItem.leftBarButtonItem = customBarItem;

        //set TitleAppIcon
        let GR = UITapGestureRecognizer(target: self, action: Selector("headerLogoTapAction:"))
        let imageView = UIImageView(frame: CGRect(x: 90, y: 0, width: ((UIScreen.mainScreen().bounds.width)/3), height: 40))
        imageView.contentMode = .ScaleAspectFit
        let image = UIImage(named: "yourimag.png") //or set title 
        imageView.image = image
        imageView.addGestureRecognizer(GR)
        imageView.userInteractionEnabled = true
        navigationItem.titleView = imageView
    }

希望这会帮助你

添加覆盖屏幕内容的自定义导航栏

2 个答案: