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[操作系统]iOS 十六进制的颜色值转换为UIColor


UIColor+Hex.h里面中

#import <UIKit/UIKit.h>@interface UIColor (Hex)+ (UIColor *) colorWithHexString: (NSString *)color;@end

 

UIColor+Hex.m里面中

#import "UIColor+Hex.h"@implementation UIColor (Hex)#pragma mark - 颜色转换 iOS中十六进制的颜色转换为UIColor+ (UIColor *) colorWithHexString: (NSString *)hexString{  NSString *cString = [[hexString stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];    //hexString应该6到8个字符  if ([cString length] < 6) {    return [UIColor clearColor];  }    //如果hexString 有@"0X"前缀  if ([cString hasPrefix:@"0X"])    cString = [cString substringFromIndex:2];    //如果hexString 有@"#""前缀  if ([cString hasPrefix:@"#"])    cString = [cString substringFromIndex:1];  if ([cString length] != 6)    return [UIColor clearColor];    //RGB转换  NSRange range;  range.location = 0;  range.length = 2;    //R  NSString *rString = [cString substringWithRange:range];    //G  range.location = 2;  NSString *gString = [cString substringWithRange:range];    //B  range.location = 4;  NSString *bString = [cString substringWithRange:range];    //  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

使用方法:

//1、添加头文件#import "UIColor+Hex.h"//2、在需要的地方 [UIColor colorWithHexString:@"十六进制"]//eg:[self.view setBackgroundColor:[UIColor colorWithHexString:@"#11489B"]];