在iOS 7和Objective c中使用UIColor类别 [英] Using a UIColor category in iOS 7 and Objective c

问题描述

我有一个UIColor + MyLayout.m文件，例如：

I have a UIColor+MyLayout.m file such as:

@implementation UIColor (Layout)

- (UIColor *) textBackground
{
    UIColor *lightGreen = [UIColor colorWithRed:0.0f/255.0f green:178.0f/255.0f     blue:238.0f/255.0f alpha:1.0f];

    return lightGreen;
}

@end

我添加了.h文件到我的viewcontroller.m，但如何将其调用为UIColor？

I have added the .h file to my viewcontroller.m, but how do I call this into a UIColor?

UIColor * myColor =？

UIColor *myColor = ?

推荐答案

如果您执行以下操作会更好：

Would be better if you do the following:

@implementation UIColor (Layout)

+ (UIColor *) textBackground {
    UIColor *lightGreen = [UIColor colorWithRed:0.0f/255.0f green:178.0f/255.0f        blue:238.0f/255.0f alpha:1.0f];
    return lightGreen;
}

@end

然后只需将其称为 UIColor * myColor = [UIColor textBackground];

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