如何在iPhone翻转视图动画过渡期间控制背景颜色？ [英] How do I control the background color during the iPhone flip view animation transition?

问题描述

我有一些相当标准的翻转动作：

I have some pretty standard flipping action going on:

[UIView beginAnimations:@"swapScreens" context:nil];
[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:self.view cache:YES];
[UIView setAnimationDuration:1.0];
[self.view exchangeSubviewAtIndex:0 withSubviewAtIndex:1];
[UIView commitAnimations]; 

对Apple来说，这种动画风格非常容易使用。非常酷，我已经能够非常轻松地在整个应用程序中设置过渡，翻转，淡入等动画。

To Apple's credit, this style of animation is amazingly easy to work with. Very cool, and I've been able to animate transitions, flips, fades etc. throughout the app very easily.

问题：期间翻转过渡，翻转过程中两个视图后面可见的背景是白色的，我希望它是黑色的。我已经：

Question: During the flip transition, the background visible 'behind' the two views during the flip is white and I'd like it to be black. I've:

• 设置包含视图的背景（ self.view 以上） - 没有骰子。我真的认为这样可行。


• 将每个视图的背景设置为黑色 - 没有骰子。我不认为这会起作用，虽然你给出了不同的东西以便更好地理解：）


• Google就像疯了似的;继续登陆与Safari相关的列表。

• Set the background of the containing view (self.view above) - no dice. I really thought that would work.
• Set the background of each view to black - no dice. I didn't think this would work although you give different things a shot to understand better :)
• Google'd like crazy; keep landing on Safari-related listings.

提前致谢！

推荐答案

您可以使用颜色或图像。您可以添加视图来执行此操作：

You could use a color or an image. You can add a view to do it:

UIWindow *window = [appDelegate window];
UIView *bgView = [[UIView alloc] init];
[bgView setBackgroundColor:[UIColor blackColor]];
[window addSubView:bgView];

或直接在窗口上设置背景颜色：

Or set the background color on the window directly:

[[appDelegate window] setBackgroundColor:[UIColor blackColor]];

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