Huang-Libo

//
//  YTKAnimatingRequestAccessory.h
//  Ape_uni
//
//  Created by Chenyu Lan on 10/30/14.
//  Copyright (c) 2014 Fenbi. All rights reserved.
//

#import <Foundation/Foundation.h>
#import <YTKBaseRequest.h>

Huang-Libo

- (UIViewController *)topViewController{
  return [self topViewController:[UIApplication sharedApplication].keyWindow.rootViewController];
}

- (UIViewController *)topViewController:(UIViewController *)rootViewController
{
  if (rootViewController.presentedViewController == nil) {
    return rootViewController;
  }
  

Huang-Libo

// `dispatch_once' singleton initialisation
+ (id)sharedInstance {
    static EOCClass *sharedInstance = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        sharedInstance = [[self alloc] init];
    });
    return sharedInstance;
}

Huang-Libo

/// 参考 WeexSDK `WXConvert.m` 中的 `+UIColor:` 方法 （且在其基础上添加了对 #rrggbbaa 格式的支持）
/// @param colorString 颜色字符串, 支持以下格式:
///         #fff
///         #rrggbb
///         #rrggbbaa
///         rgb(r,g,b)
///         rgba(r,g,b,a)
+ (UIColor *)colorWithColorString:(NSString *)colorString {
    // 1. check cache
    static NSCache *colorCache;

Huang-Libo

/// 获取 url 的顶级域名. 比如, a.example.com 的顶级域名是 example.com
- (NSString *)topLevelDomainNameFromUrl:(NSURL *)url {
    if (url.absoluteString.length == 0) {
        return nil;
    }
    
    NSString *topLevelDomainName = @"";
    NSString *host = url.host;
    NSArray *subStrings = [host componentsSeparatedByString:@"."];
    NSUInteger count = subStrings.count;