从 storyboard/xib 文件修改 UIImage 渲染模式 [英] Modify UIImage renderingMode from a storyboard/xib file

问题描述

是否可以从故事板或 xib 编辑器中修改 UIImage 的 renderingMode?

Is it possible to modify a UIImage's renderingMode from a storyboard or xib editor?

目标是将 tintColor 应用到特定的 UIImageView 对象.

The goal is to apply tintColor to the particular UIImageView object.

推荐答案

以下是在 .xib 或故事板文件中执行此操作的方法:

Here's how you can do it in .xib or storyboard files:

(Obj-C) 在 UIImageView 上创建一个类别:

(Obj-C) Create a category on UIImageView:

@interface UIImageView (Utils)

- (void)setImageRenderingMode:(UIImageRenderingMode)renderMode;

@end

@implementation UIImageView (Utils)

- (void)setImageRenderingMode:(UIImageRenderingMode)renderMode
{
    NSAssert(self.image, @"Image must be set before setting rendering mode");
    self.image = [self.image imageWithRenderingMode:renderMode];
}

@end

(Swift 4) 为 UIImageView 创建一个扩展:

(Swift 4) Create an extension for UIImageView:

extension UIImageView {
    func setImageRenderingMode(_ renderMode: UIImage.RenderingMode) {
        assert(image != nil, "Image must be set before setting rendering mode")
        // AlwaysOriginal as an example
        image = image?.withRenderingMode(.alwaysOriginal)
    }
}

然后在xib文件中的Identity Inspector中，添加一个runtime属性:

Then in the Identity Inspector in the xib file, add a runtime attribute:

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