iphone，ipad重复UIView - 克隆视图 [英] iphone, ipad Duplicate UIView - Cloned View

问题描述

如何复制UIView。要求是在视图中应该有两个视图，以便考虑View A和View B.更改一个视图也应该改变另一个视图。

How to Duplicate a UIView. requirement is there should be two views inside a view for ex consider View A and View B. changing one view also should change another view.

例如考虑在视图中添加了一个mpmediaplayer A意味着视图B应该显示在视图A中的相同视频，如果我移动任何视图A意味着转发视频，音量控制等。scond view shold显示相同的东西。

for example consider am added a mpmediaplayer in view A means view B should show same video which is there in view A and if i moving anything in view A means ie forwarding video, volume control etc.. the scond view shold display the same thing.

推荐答案

没有简单的方法来克隆视图然后通过一行代码更新两个视图。因为他们的底层CALayers是不同的。但是为了复制UIView，可以使用一种新的方法：
使用UIView的方法：

There is no easy way to clone a view and then to update two views by one line of code. Because their underlying CALayers are different. But for duplicating a UIView, here is a new method you can use: Use UIView's method:

- (UIView *)snapshotViewAfterScreenUpdates:(BOOL)afterUpdates

这是绘制视图的最快方法。在iOS 7中可用。

This is the fastest way to draw a view. Available in iOS 7.

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