xiao66guo-XGPullup-and-down-the-refresh: Полностью настраиваемый исходный код для общего обновления с помощью раскрывающегося списка, достаточно импортировать один заголовочный файл.

#XGPullup-and-down-the-refresh 项目简介：

1️⃣用完全自定的方式来实现上拉加载更多、下拉刷新的功能；

2️⃣对上拉加载更多和下拉刷新功能已各自单独分离，可以单独使用；

3️⃣用Runtime运行时机制来监听刷新的状态；

4️⃣对细节的处理：用一个没有大小的FootView来把刷新控件的后面的分割线去掉；

5️⃣利用KVO来监听ScrollView滚动的位置来改变刷新控件的一个状态；

为ScollView添加的分类的相关代码：

//
//  UIScrollView+XGRefresh.m
//  XGRefresh
//
//  Created by 小果 on 16/9/28.
//  Copyright © 2016年 小果. All rights reserved.
//

#import "UIScrollView+XGRefresh.h"
#import <objc/runtime.h>

static const char *upRefreshKey = "upRefreshKey";
static const char *downRefreshKey = "downRefreshKey";

@implementation UIScrollView (XGRefresh)

-(void)setUpRefreshView:(XGPullupRefreshView *)upRefreshView{
    objc_setAssociatedObject(self, upRefreshKey, upRefreshView, 1);
}

-(XGPullupRefreshView *)upRefreshView{
    XGPullupRefreshView *upRefreshView = objc_getAssociatedObject(self, upRefreshKey);
    if (nil == upRefreshView) {
        upRefreshView = [[XGPullupRefreshView alloc] init];
        [self addSubview:upRefreshView];
        self.upRefreshView = upRefreshView;
    }
    return upRefreshView;
}

-(void)setDownRefreshView:(XGPullDownRefreshView *)downRefreshView{
    objc_setAssociatedObject(self, downRefreshKey, downRefreshView, 1);
}

-(XGPullDownRefreshView *)downRefreshView{
    XGPullDownRefreshView *downRefreshView = objc_getAssociatedObject(self, downRefreshKey);
    if (nil == downRefreshView) {
        downRefreshView = [[XGPullDownRefreshView alloc] init];
        [self addSubview:downRefreshView];
        self.downRefreshView = downRefreshView;
    }
    return downRefreshView;
}
@end

OSCHINA-MIRROR/xiao66guo-XGPullup-and-down-the-refresh

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