January 2020
Intermediate to advanced
356 pages
6h 4m
Chinese
Content preview from Swift游戏开发经典实例
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使用外设
｜
303
if UIScreen.screens.count >= 2 {
//
接下来，我们从故事板中加载一个视图控制器，
//
这个视图控制器的
ID
名为
"ExternalScreen"
let viewController = self.storyboard?
.instantiateViewController(withIdentifier: "ExternalScreen")
//
获取最后一个
UIScreen
对象
if let connectedScreen = UIScreen.screens.last {
//
创建一个
UIWindow
，然后将
viewController
添加到这个
UIWindow
let window = UIWindow(frame: connectedScreen.bounds)
window.rootViewController = viewController
window.makeKeyAndVisible()
//
把
UIWindow
添加到
UIScreen
window.screen = connectedScreen
}
}
讨论
通过订阅
UIScreenDidConnect
通知和
UIScreenDidDisconnect
通知，我们可以知
道什么时候有新的显示器接入设备。当有新的显示器通过线缆或者
AirPlay
连接到
系统，或者当一个显示器断开连接时，就会通知这两个消息中的某一个。 ...
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and much more.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.