iOS 7应用程序如何让自己透明地查看用户的主屏幕图像？ [英] How can an iOS 7 App make itself transparent to see a user's home screen image?

问题描述

我见过一些应用程序（例如Vesper或iPad的提醒应用程序）使用用户的主屏幕背景图像。这怎么可能？

I've seen some apps for example (Vesper, or iPad's reminders app) make use of a user's home screen background image. How is that possible?

制作透明的View或Window或（Gulp！Private API）必须是某种切割技巧？

It must be some sort of cleaver trick to make a transparent View or Window or (Gulp! Private API)?

任何人都有猜测的危险吗？

Anyone hazard a guess?

推荐答案

我自己没试过，但我听说私有方法 [[UIApplication sharedApplication] _setApplicationIsOpaque：NO] 可以做你想要的。

I haven't tried it myself, but I hear that the private method [[UIApplication sharedApplication] _setApplicationIsOpaque: NO] may do what you're after.

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