iOS 關於16進制RGB顏色設置問題

針對UI給的標註圖上，色值給的都是16進制的，如#ED145B,#000000等等， 那麼我們在代碼中應該怎麼使用這一色值呢？下面給出幾種方案以供參考！

1.
寫一個宏定義：

#define UGUColorFromRGB_0x(rgbValue) [UIColor \
colorWithRed:((float)((rgbValue & 0xFF0000) >> 16))/255.0 \
green:((float)((rgbValue & 0xFF00) >> 8))/255.0 \
blue:((float)(rgbValue & 0xFF))/255.0 alpha:1.0]

使用：

moreLabel.textColor = UGUColorFromRGB_0x(0x666666);

這樣就可以爲該控件設置字體顏色了

2.自己寫一個轉換方法 調用

#pragma mark - 16進制轉RGB
+ (UIColor *)getColorWithHexStr:(NSString *)hexColor {
    if([hexColor containsString:@"#"]){
        //去掉#
        hexColor = [hexColor substringFromIndex:1];
    }
    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:(red)/255.f green:(green)/255.f blue:(blue)/255.f alpha:1.f];
}

調用方法：

[_protocolBtn setTitleColor:[BSDTools getColorWithHexStr:@"000000"] forState:UIControlStateNormal];

這樣也是可以設置相應控件顏色的！