如何在iPhone应用程序中调暗视图？ [英] How can I dim the view in an iPhone application?

问题描述

我看过许多iPhone应用程式会在更新或下载某个事件时让活动指示器调暗萤幕，让使用者知道它很忙。我知道如何做活动指示器，但我如何去做调光？如果可以，请发布示例代码。

I've seen a lot of iPhone apps that will dim the screen with an activity indicator when it's updating or downloading something to let the user know it's busy. I know how to do the activity indicator but how do I go about doing the dimming? Please post example code if you can.

推荐答案

好，我这样做是太创建另一个视图，低。然后我添加这个视图作为一个子视图。

Ok, the way I did this was too create another view and set the opacity very low. Then I add this view as a subview.

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