在iOS 7中的另一个ViewController上显示清晰的彩色ViewController [英] Display clear colored ViewController over another ViewController in iOS 7

问题描述

在iOS 7之前，根据这个流行的Stackoverflow 提问，显示一个具有清晰背景的ViewController是在主ViewController中执行以下操作：

Prior to iOS 7, according to this popular Stackoverflow question, the way to show a ViewController with a clear background was to do the following in the main ViewController:

    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
    UIViewController *vc = [storyboard instantiateViewControllerWithIdentifier:@"SecondViewController"];
    vc.view.backgroundColor = [UIColor clearColor];
    self.modalPresentationStyle = UIModalPresentationCurrentContext;
    [self presentViewController:vc animated:NO completion:nil];

然而，正如我最近在iOS 7中发现的那样（以及其他人对主要答案的评论） ，上述解决方案不再有效，而只是显示黑色模型控制器。我知道透明度主要用于iOS 7，因此透明视图控制器很有可能。我还没有发现这个问题的解决方法，并且想知道是否有人知道如何解决这个问题。谢谢！

However, as I have recently discovered with iOS 7 (and as commented by others to the main answer), the above solution no longer works, and instead just shows a black model controller. I know that transparency is largely used in iOS 7, so that transparent view controller is very likely possible. I haven't discovered a workaround to this issue yet, and was wondering if anyone knows how to resolve this problem. Thanks!

推荐答案

我只是按照原始解决方案在Interface Builder中应用了一些默认和自定义设置，在我看来它是加工。

I just followed the original solution and applied some default and custom settings in Interface Builder, and seems to me it is working.

• 您可以在此处查看： https://github.com/codedad/SO_IOS_viewcl_on_viewcl

• You can check it here: https://github.com/codedad/SO_IOS_viewcl_on_viewcl

重要部分（与问题代码非常相似） ：

Important section (quite similar to the question's code):

- (IBAction)click:(id)sender {
    NSLog(@"click");


    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
    UIViewController *vc = [storyboard instantiateViewControllerWithIdentifier:@"TopOverVc"];

    vc.view.backgroundColor = [UIColor clearColor];
    self.modalPresentationStyle = UIModalPresentationCurrentContext;
    [self presentViewController:vc animated:NO completion:nil];
}

• 同时请找到IB snaphot ：
  

  • Also pls find the IB snaphot:

    模拟器结果（按下按钮后）：

    And the simulator result (after pressing button):

    希望我没有误解你的问题中的sthing;）快乐的编码！

    Hope I did not misunderstand sthing in your question ;) Happy coding!

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