Swift 实现导航栏文字的无限滚动

1.项目中引入第三方框架MarqueeLabel,地址如下:

https://github.com/search?utf8=✓&q=MarqueeLabel&type=Repositories&ref=searchresults

2.那上代码吧:

import UIKit

import MarqueeLabel_Swift

class MarqueeTitleView: UIView {

init(frame: CGRect, title: String) {

super.init(frame: frame)

let label = MarqueeLabel(frame: frame)

label.text = title

label.textColor = .whiteColor()

label.font = UIFont.boldSystemFontOfSize(17)

label.textAlignment = .Center

label.scrollDuration = 10

label.trailingBuffer = 30

label.fadeLength = 10

label.animationCurve = .EaseInOut

self.addSubview(label)

}

required init?(coder aDecoder: NSCoder) {

fatalError("init(coder:) has not been implemented")

}

}

注:导入框架后自定义一个view将上面代码粘贴替换.

3.控制器中代码:

class BaseViewController: UIViewController {

override func viewDidLoad() {

super.viewDidLoad()

self.navigationItem.leftBarButtonItem = UIBarButtonItem(imageName: "nav_back", target: self, action: #selector(back))

let width = view.frame.width - 120

let titleView = MarqueeTitleView(frame: CGRect(x: 0, y: 0, width: width, height: 30), title: "这个地方是你要导航栏上title滚动的文字")

navigationItem.titleView = titleView

}

}

4.好了,赶快去试试吧,惊喜等你发现.