在开发过程中android开发是用的16进制的颜色 有时候为了方便统一 UI给的就是16进制的颜色.
废话不多说 上代码 : 我是给UIcolor添加的类目 (分类) 用的小伙伴 直接copy代码就可以用了.
代码如下 :
1.h文件
#import@interface UIColor (LWCColor)
//16进制转10进制方法
+ (UIColor *) colorWithHexString: (NSString *)color;
@end
2.m文件
#import "UIColor+LWCColor.h"
@implementation UIColor (LWCColor)
+ (UIColor *) colorWithHexString: (NSString *)color
{
NSString *cString = [[color stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];
// String should be 6 or 8 characters
if ([cString length] < 6) {
return [UIColor clearColor];
}
// 判断前缀
if ([cString hasPrefix:@"0X"])
cString = [cString substringFromIndex:2];
if ([cString hasPrefix:@"#"])
cString = [cString substringFromIndex:1];
if ([cString length] != 6)
return [UIColor clearColor];
// 从六位数值中找到RGB对应的位数并转换
NSRange range;
range.location = 0;
range.length = 2;
//R、G、B
NSString *rString = [cString substringWithRange:range];
range.location = 2;
NSString *gString = [cString substringWithRange:range];
range.location = 4;
NSString *bString = [cString substringWithRange:range];
// Scan values
unsigned int r, g, b;
[[NSScanner scannerWithString:rString] scanHexInt:&r];
[[NSScanner scannerWithString:gString] scanHexInt:&g];
[[NSScanner scannerWithString:bString] scanHexInt:&b];
return [UIColor colorWithRed:((float) r / 255.0f) green:((float) g / 255.0f) blue:((float) b / 255.0f) alpha:1.0f];
}
@end
