swift中noticeOnStatusBar

代码如下:
调用方法:

 SwiftNoticeDemo.noticeOnStatusBar("你好么", autoClear: true, autoClearTime: 2)

SwiftNoticeDemo.swift代码如下:

import Foundation
import UIKit

class SwiftNoticeDemo:NSObject {
    
   static var windows = [UIWindow]()
  
    @discardableResult
    static func noticeOnStatusBar(_ text:String,autoClear:Bool,autoClearTime:Int) -> UIWindow {
        let frame = UIApplication.shared.statusBarFrame
        let window = UIWindow()
        window.backgroundColor = UIColor.purple
        let view = UIView()
        view.backgroundColor = UIColor.red
        let label = UILabel(frame: frame.height > 20 ? CGRect(x: frame.origin.x, y: frame.origin.y + frame.height - 17, width: frame.width, height: 20):frame)
        label.textAlignment = .center
        label.font = UIFont.systemFont(ofSize: 12)
        label.textColor = UIColor.white
        label.text = text
        view.addSubview(label)
        
        window.frame = frame
        view.frame = frame
        
        window.windowLevel = UIWindowLevelAlert
        window.isHidden = false
        window.addSubview(view)
        windows.append(window)
        
        
        var orgPoint = view.frame.origin
        orgPoint.y = -(view.frame.size.height)
        let destPoint = view.frame.origin
        
        view.frame = CGRect(origin: orgPoint, size: view.frame.size)
        UIView.animate(withDuration: 0.7, animations: {
            view.frame = CGRect(origin: destPoint, size: view.frame.size)
        }) { (true) in
            if autoClear {
                self.perform(.hideNotice, with: window, afterDelay: TimeInterval(autoClearTime))
                
            }
        }
        return window
    }
}



fileprivate extension Selector {
    static let hideNotice = #selector(SwiftNoticeDemo.hideNotice(_:))
}


@objc extension SwiftNoticeDemo {
    static func hideNotice(_ sender:AnyObject) {
        if let window = sender as? UIWindow {
            if let view = window.subviews.first {
                UIView.animate(withDuration: 0.8, animations: {
                    view.frame = CGRect(x: 0, y: -view.frame.height, width: view.frame.width, height: view.frame.height)
                    view.alpha = 0
                }) { boo in
                   if let index = windows.index(where:{(item) -> Bool in
                       return item == window
                   }) {
                    windows.remove(at: index)
                    }
                }
            }
        }
    }
}