仿美团的demo增加正在刷新的监听

正在刷新时不允许左右滑动scrollView切换

HVScrollView(仿爱奇艺)/HVScrollView(仿爱奇艺)/ViewController.m

@@ -95,6 +95,7 @@ - (void)scrollViewDidScroll:(UIScrollView *)scrollView {
 
 }
 
+
 - (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView {
     if (scrollView == self.scrollView) {
         NSInteger index = scrollView.contentOffset.x / scrollView.frame.size.width;

HVScrollView(仿美团)/HVScrollView(仿美团).xcodeproj/xcuserdata/libo.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Bucket
+   type = "1"
+   version = "2.0">
+</Bucket>

HVScrollView(仿美团)/HVScrollView(仿美团)/SubControllers/BaseViewController.h

@@ -9,11 +9,18 @@
 #import <UIKit/UIKit.h>
 #import "MyHeaderView.h"
 
+typedef NS_ENUM(NSInteger,RefreshingState) {
+    RefreshingStateRefreshing,  // 正在刷新
+    RefreshingStateEndRefresh,  // 结束刷新
+};
+
 @interface BaseViewController : UIViewController
 @property (nonatomic, strong) UIScrollView *scrollView;
 @property (nonatomic, strong) MyHeaderView *headerView;
 @property (nonatomic, assign) CGPoint lastContentOffset;
 
 @property (nonatomic, assign) BOOL isFirstViewLoaded;
 
+@property (nonatomic, assign) BOOL refreshState;
+
 @end

HVScrollView(仿美团)/HVScrollView(仿美团)/SubControllers/BaseViewController.m

@@ -24,6 +24,7 @@ - (void)viewDidLoad {
     [self.view addSubview:self.tableView];
     self.scrollView = self.tableView;
 
+
     self.tableView.mj_header = [MJRefreshNormalHeader headerWithRefreshingBlock:^{
         // 下拉刷新
         [self downPullUpdateData];
@@ -34,11 +35,17 @@ - (void)viewDidLoad {
     }];
 }
 
+
 // 下拉刷新
 - (void)downPullUpdateData {
+
+    [[NSNotificationCenter defaultCenter] postNotificationName:@"isRefreshing" object:@(RefreshingStateRefreshing)];
+
     // 模拟网络请求，1秒后结束刷新
     dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
         self.rowCount = 20;
+        [[NSNotificationCenter defaultCenter] postNotificationName:@"isRefreshing" object:@(RefreshingStateEndRefresh)];
+
         [self.tableView.mj_header endRefreshing];
     });
 }
@@ -47,9 +54,13 @@ - (void)downPullUpdateData {
 - (void)upPullLoadMoreData {
     self.rowCount = 30;
     [self.tableView reloadData];
+    [[NSNotificationCenter defaultCenter] postNotificationName:@"isRefreshing" object:@(RefreshingStateRefreshing)];
+
     // 模拟网络请求，1秒后结束刷新
     dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
         self.rowCount = 20;
+        [[NSNotificationCenter defaultCenter] postNotificationName:@"isRefreshing" object:@(RefreshingStateEndRefresh)];
+
         [self.tableView.mj_footer endRefreshing];
     });
 }
@@ -61,10 +72,6 @@ - (void)scrollViewDidScroll:(UIScrollView *)scrollView {
     self.lastContentOffset = scrollView.contentOffset;
 }
 
-- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView {
-    self.lastContentOffset = scrollView.contentOffset;
-}
-
 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
     return self.rowCount;
 }

HVScrollView(仿美团)/HVScrollView(仿美团)/ViewController.m

@@ -62,12 +62,38 @@ - (void)viewDidLoad {
     // 先将第一个子控制的view添加到scrollView上去
     [self.scrollView addSubview:self.childViewControllers[0].view];
 
-
     // 监听子控制器发出的通知
     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(subScrollViewDidScroll:) name:@"SubScrollViewDidScroll" object:nil];
+    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(refreshing:) name:@"isRefreshing" object:nil];
 
 }
 
+#pragma mark - 刷新通知
+- (void)refreshing:(NSNotification *)noti {
+    RefreshingState state = [noti.object integerValue];
+    if (state == RefreshingStateRefreshing) {
+        self.scrollView.userInteractionEnabled = NO;
+    } else {
+        self.scrollView.userInteractionEnabled = YES;
+    }
+}
+
+// self.scrollView的代理方法
+
+- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
+
+    BaseViewController *baseVc = self.childViewControllers[_selectedIndex];
+    if (scrollView == self.scrollView) {
+        // 如果scrollView的内容很少，在屏幕范围内，则自动回落
+        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
+            if (baseVc.scrollView.contentSize.height < kScreenH && [baseVc isViewLoaded]) {
+                [baseVc.scrollView setContentOffset:CGPointMake(0, -kScrollViewBeginTopInset) animated:YES];
+            }
+        });
+    }
+}
+
+
 // 子控制器上的scrollView已经滑动的代理方法所发出的通知方法(核心)
 - (void)subScrollViewDidScroll:(NSNotification *)noti {