从UIImageView中删除图像 [英] Removing image from UIImageView

问题描述

我根据用户交互，使用图片加载 UIImageView 。当最初显示父视图时，未选择任何图像，并且图像视图为黑色。如果用户离开该视图并返回，则图像仍然存在。我试过了

I load a UIImageView with an image depending on user interaction. When the parent view is initially displayed, no image has been selected and the imageview is black. If the user leaves that view and comes back, the image is still there. I've tried

myImageView.image = nil;

如何删除图像，使 UIImageView 再次显示为黑色？

upon leaving the view but the image remains. How can I remove the image so the UIImageView appears black again?

UIImageView

UIImageView

通过IB连接。

推荐答案

将 UIImageView 设为：

myImageView.image = nil 

UIImageView 。在调用函数返回时加载图像？是你的 UIImageView 被声明和/或在你的主要函数的其他地方使用吗？

is the correct way to clear an UIImageView. Are you loading the image when your calling function returns? Is your UIImageView being declared, and/or used elsewhere in your main function?

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