//字符串转颜色 - (UIColor *) colorWithHexString: (NSString *) stringToConvert { NSString *cString = [[stringToConvert stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString]; if ([cString length] < 6) return [UIColor whiteColor]; if ([cString hasPrefix:@"#"]) cString = [cString substringFromIndex:1]; if ([cString length] != 6) return [UIColor whiteColor]; NSRange range; range.location = 0; range.length = 2; NSString *rString = [cString substringWithRange:range]; range.location = 2; NSString *gString = [cString substringWithRange:range]; 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]; } //颜色转字符串 - (NSMutableArray *) changeUIColorToRGB:(UIColor *)color { const CGFloat *cs = CGColorGetComponents(color.CGColor); NSString *r = [NSString stringWithFormat:@"%@", [self ToHex:cs[0] * 255]]; NSString *g = [NSString stringWithFormat:@"%@", [self ToHex:cs[1] * 255]]; NSString *b = [NSString stringWithFormat:@"%@", [self ToHex:cs[2] * 255]]; return [NSString stringWithFormat:@"#%@%@%@", r, g, b]; } //十进制转十六进制 - (NSString *)ToHex:(int)tmpid { NSString *endtmp = @""; NSString *nLetterValue; NSString *nStrat; int ttmpig = tmpid % 16; int tmp = tmpid / 16; switch (ttmpig) { case 10: nLetterValue = @"A"; break; case 11: nLetterValue = @"B"; break; case 12: nLetterValue = @"C"; break; case 13: nLetterValue = @"D"; break; case 14: nLetterValue = @"E"; break; case 15: nLetterValue = @"F"; break; default:nLetterValue = [[NSString alloc] initWithFormat:@"%i", ttmpig]; } switch (tmp) { case 10: nStrat = @"A"; break; case 11: nStrat = @"B"; break; case 12: nStrat = @"C"; break; case 13: nStrat = @"D"; break; case 14: nStrat = @"E"; break; case 15: nStrat = @"F"; break; default:nStrat = [[NSString alloc] initWithFormat:@"%i", tmp]; } endtmp = [[NSString alloc] initWithFormat:@"%@%@", nStrat, nLetterValue]; return endtmp; }