From 5b4a6ad8c4908f2d66ffc33fc4af2dcc210ad0f2 Mon Sep 17 00:00:00 2001
From: linzuhan <767678362@qq.com>
Date: Thu, 29 Nov 2018 22:29:28 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=E5=85=A8=E5=B1=8F=E8=BF=94?=
 =?UTF-8?q?=E5=9B=9E=E6=89=8B=E5=8A=BF=E7=9A=84=E6=94=AF=E6=8C=81?=
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---
 .../WMMenuView/WMScrollView+ScrollBack.h      | 17 ++++++++++
 .../WMMenuView/WMScrollView+ScrollBack.m      | 32 +++++++++++++++++++
 2 files changed, 49 insertions(+)
 create mode 100644 WMPageController/WMMenuView/WMScrollView+ScrollBack.h
 create mode 100644 WMPageController/WMMenuView/WMScrollView+ScrollBack.m

diff --git a/WMPageController/WMMenuView/WMScrollView+ScrollBack.h b/WMPageController/WMMenuView/WMScrollView+ScrollBack.h
new file mode 100644
index 0000000..13f0a19
--- /dev/null
+++ b/WMPageController/WMMenuView/WMScrollView+ScrollBack.h
@@ -0,0 +1,17 @@
+//
+//  WMScrollView+ScrollBack.h
+//  KXLive
+//
+//  Created by 林祖涵 on 2018/11/29.
+//  Copyright © 2018 ibobei. All rights reserved.
+//
+
+#import "WMScrollView.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface WMScrollView (ScrollBack)
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/WMPageController/WMMenuView/WMScrollView+ScrollBack.m b/WMPageController/WMMenuView/WMScrollView+ScrollBack.m
new file mode 100644
index 0000000..2fc409a
--- /dev/null
+++ b/WMPageController/WMMenuView/WMScrollView+ScrollBack.m
@@ -0,0 +1,32 @@
+//
+//  WMScrollView+ScrollBack.m
+//  KXLive
+//
+//  Created by 林祖涵 on 2018/11/29.
+//  Copyright © 2018 ibobei. All rights reserved.
+//
+
+#import "WMScrollView+ScrollBack.h"
+
+@implementation WMScrollView (ScrollBack)
+
+#pragma mark - <UIGestureRecognizerDelegate>
+
+- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer
+{
+    if ([gestureRecognizer isKindOfClass:[UIPanGestureRecognizer class]]) {
+        UIPanGestureRecognizer *tmpGesture = (UIPanGestureRecognizer *)gestureRecognizer;
+        CGPoint translation = [tmpGesture translationInView:tmpGesture.view];
+        /* 当scrollView滑到初始位置时，再滑动就让返回手势生效
+         * translation.x > 0 表示向右滑动 translation.x <= 0 表示向左滑动
+         */
+        if (self.contentOffset.x <= 0
+            && translation.x > 0) {
+            return NO;
+        }
+    }
+    
+    return YES;
+}
+
+@end