绘图背景颜色 &边框与背景 PNG [英] Drawing backgroundcolor & border Vs Background PNGs

问题描述

我的 iPad 应用程序的大多数按钮都需要特定的 RGB 十六进制颜色.

I want specific RGB hex color for most of the buttons for my iPad Application.

我所做的是:我已经在我的项目中实现了 UIButton 子类，它模拟了所需的背景颜色、文本颜色和按钮边框 - 然后我在项目中需要 UIButton 的任何地方使用它.

What I have done is: I have implemented UIButton Subclass in my project which emulates the required background color, text color & border for buttons - and then I use it everywhere in my project where I need UIButton.

我的 UI/UX 设计师不提供 PNG，而是坚持要求我模仿具有十六进制代码的相同颜色的网站按钮.我更像是一个背景 PNG 粉丝.

My UI/UX designer do not provide PNGs instead he insist that I imitate the same color web site buttons are having with Hex codes. I am more of a background PNGs fan.

现在，您可能想知道这个问题与编程的关系是，我正在访问 .layer.borderWidth &.layer.borderColor 子类中的属性，最终会在任何地方使用.

Now, relation of this question to programming as you might wonder is that, I am accessing .layer.borderWidth & .layer.borderColor property in Subclass which eventually gets used everywhere.

那么，这种方法比使用背景 PNG 对应用程序有好处吗?

So, is this approach doing any good to the Application instead of using background PNGs?

注意 (如果相关):所有按钮的大小相同.

Note (if relevant): All the buttons are of same size.

推荐答案

你可以自己从颜色制作UIImage并设置你的Button图片:

you can make UIImage from color by yourself and set yourButton image:

+ (UIImage *)imageFromColor:(UIColor *)color {
    CGRect rect = CGRectMake(0, 0, 1, 1);
    UIGraphicsBeginImageContext(rect.size);
    CGContextRef context = UIGraphicsGetCurrentContext();
    CGContextSetFillColorWithColor(context, [color CGColor]);
    CGContextFillRect(context, rect);
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return image;
}

您还需要将HEX RGB颜色代码转换为UIColor

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