当您在开发新的应用程序时，有时候从占位视图开始然后逐渐替换它们更容易。而不是使用简单的UIView，PAPlaceholder提供了一个看起来更好的占位视图，可以显示其尺寸和可选标题。

它还提供了一个占位视图控制器，它将自动创建占位视图。当您使用视图容器，如UITabBarController或UISplitViewController时，这很有用。

在iOS 7的早期阶段使用这个尤其有用，因为在iOS 7中，许多系统视图（如导航栏或标签栏）实际上是透明的，内容视图延伸到它们后面。PAPlaceholderView上的箭头显示了视图的边缘，您可以根据需要确定边缘。

将PAPlaceholder添加到您的项目中

将PAPlaceholder添加到项目的最简单方法就是使用CocoaPods。只需将以下行添加到您的Podfile中

    pod 'PAPlaceholder'

如果您更喜欢手动集成，只需将PAPlaceholder/*.{m,h}复制到您的项目中。

使用代码创建占位视图

您可以在可以使用UIView的地方使用PAPlaceholderView。例如，在loadView

- (void)loadView {
    self.view = [[PAPlaceholderView alloc] initWithFrame:[UIScreen mainScreen].bounds];
}

在Storyboard或XIB中创建占位视图

只需将UIView拖动到视图中，然后将类更改为PAPlaceholderView。或者拖动到UIViewController上，然后将类更改为PAPlaceholderViewController。包含的示例项目在Storyboard中展示了这一点。

变更日志

0.2

• 为PAPlaceholderView.*添加了Mac OS X支持

0.1

• 初始发布

联系

想要了解此库和其他库的更新，请关注我的Twitter（@denishennessy）或App.net（@denishennessy）。

如果您遇到错误，或者想到了一个极好的新功能，那么在GitHub上打开一个问题可能是分享的最佳方式。实际上，最佳方式是向我发送一个pull request...

对于其他任何事情，电子邮件始终有效： [email protected]

许可证（BSD)

Copyright (c) 2014, Denis Hennessy (Peer Assembly - http://peerassembly.com)
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