makeKeyAndVisible

最新推荐文章于 2022-07-28 16:57:39 发布
转载 最新推荐文章于 2022-07-28 16:57:39 发布 · 5.7k 阅读 · 0

本文深入探讨了iOS开发中用于管理窗口显示的便捷方法makeKeyAndVisible，解释其作用、可用性及与其他窗口管理方法的关系。

Makes the receiver the key window and makes that window visible.

- (void)makeKeyAndVisible

Discussion

This is a convenience method to make the receiver the main window and displays it in front of other windows. You can also hide and reveal a window using the inheritedhidden UIView property.

Availability
  • Available in iPhone OS 2.0 and later.

我不知道为什么，不过有人搜索makeKeyAndVisible方法。其实我这种懒人一般不会刨根问底，有些方法照打就好，那些白给的方法有些就别动就好了。

我们看看这个每个程序都有的方法吧：

[window makeKeyAndVisible];

由于iPhone是单窗口程序，所以也就只有这么一个Window对象，而且是UIWindow，不是NSWindow。而根据文档上所说：

“这个是便捷方法，去使被使用对象的主窗口显示到屏幕的最前端。你也可以使用hiddenUIView方法隐藏这个窗口”

所以基本上来说，对于编程者的区别仅仅在于在其前添加代码，或在其后添加代码。



【三种加载自定义控制器的方式 Objective-C语言】
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【三种加载自定义控制器的方式 Objective-C语言】
window.rootViewController = navController window.makeKeyAndVisible() navController.setViewControllers([mainVC], animated: true). 短暂黑屏如何解决
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window.makeKeyAndVisible() navController.setViewControllers([mainVC], animated: false) ``` 这样，在视图控制器切换时就不会出现动画效果，从而避免了短暂的黑屏。 2. 在切换视图控制器前添加一个半透明的...
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最新发布
09-29
.makeKeyAndVisible() ``` - 创建窗口并设置 `splitViewController` 为根控制器，显示应用界面。 #### 5. 实现代理方法 ```swift func splitViewController(_ splitViewController: UISplitViewController, ...
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由于提供的引用内容未直接涉及非越狱iPhone通过局域网接收Windows命令实现系统级上划手势操作，利用私有API作用于第三方App并允许后台运行的相关信息，以下基于一般的技术知识进行分析。 在非越狱的iPhone上，苹果...
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在iOS开发中，MVVM架构与响应式编程框架（如ReactiveObjC）的结合，能够有效降低视图层与业务逻辑之间的耦合度，同时提升代码的可维护性和可测试性。以下是一个基于Objective-C、ReactiveObjC和UIKit的示例，展示...
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makeKeyAndVisible的作用 [self.window makeKeyAndVisible] 由于iPhone是单窗口程序，所以也就只有这么一个Window对象，而且是UIWindow，不是NSWindow。而根据文档上所说：“这个是便捷方法，去使被使用对象的主窗口显示到屏幕的最前端。你也可以使用hiddenUIView方法隐藏这个窗口”所以基本上来说，对于编程者的区别仅仅在于在其...
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