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let kscreenwidth = UIScreen.main.bounds.size.width //屏幕的高 let kscreenhei...
self.window = UIWindow(frame: UIScreen.main.bounds) self.window?.backgro...
import UIKit class DetailViewController: UIViewController{ var lable :UI...
import UIKitclass ViewController: UIViewController { //屏幕的宽 let kscree...
今天学习了UI func application(_ application: UIApplication, didFinishLaunchin...