| 标题 | IOS中十六进制的颜色转换为UIColor |
| 范文 | 可用类别写一个 方便使用 + (UIColor *) colorWithHexString: (NSString *)color { NSString *cString = [[colorstringByTrimmingCharactersInSet:[NSCharacterSetwhitespaceAndNewlineCharacterSet]] uppercaseString]; // String should be 6 or 8 characters if ([cString length] <6) { return [UIColorclearColor]; } // strip 0X if it appears if ([cString hasPrefix:@"0X"]) cString = [cStringsubstringFromIndex:2]; if ([cString hasPrefix:@"#"]) cString = [cStringsubstringFromIndex:1]; if ([cString length] !=6) return [UIColorclearColor]; // Separate into r, g, b substrings 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]; // Scan values unsigned int r, g, b; [[NSScannerscannerWithString:rString] scanHexInt:&r]; [[NSScannerscannerWithString:gString] scanHexInt:&g]; [[NSScannerscannerWithString:bString] scanHexInt:&b]; return [UIColorcolorWithRed:((float) r /255.0f) green:((float) g /255.0f) blue:((float) b /255.0f) alpha:1.0f]; } |
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