iPhone开发之将16进制颜色转换成UIColor

最新推荐文章于 2025-08-04 11:09:44 发布

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本文介绍了一个Objective-C方法，用于将十六进制颜色字符串转换为UIColor对象。该方法通过解析输入的十六进制颜色代码，分别提取红色、绿色和蓝色的值，并将其转换为适合UIColor使用的浮点数格式。

- (UIColor *)getColor:(NSString *)hexColor
{
	unsigned int red,green,blue;
	NSRange range;
	range.length = 2;
	
	range.location = 0;
	[[NSScanner scannerWithString:[hexColor substringWithRange:range]] scanHexInt:&red];
	
	range.location = 2;
	[[NSScanner scannerWithString:[hexColor substringWithRange:range]] scanHexInt:&green];
	
	range.location = 4;
	[[NSScanner scannerWithString:[hexColor substringWithRange:range]] scanHexInt:&blue];
	
	return [UIColor colorWithRed:(float)(red/255.0f) green:(float)(green / 255.0f) blue:(float)(blue / 255.0f) alpha:1.0f];
}

[self.view setBackgroundColor:[self getColor:@"FF0000"]];