UIScrollView的左右滑動和側滑手勢衝突的解決辦法

轉載自：https://blog.csdn.net/kst_123/article/details/77762811

當ViewController中添加了一個全屏的UIScrollView的時候，UIScrollView的左滑手勢會和系統的左滑返回衝突，系統的左滑返回將會失效。解決辦法以下：

自定義一個CustomScrollView繼承於UIScrollView，而後重寫一下gestureRecognizerShouldBegin方法。

 

左邊側滑：

- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer
{
    CGPoint velocity = [(UIPanGestureRecognizer *)gestureRecognizer velocityInView:self];
    CGPoint location = [gestureRecognizer locationInView:self];
    
    if (velocity.x > 0.0f&&(int)location.x%(int)[UIScreen mainScreen].bounds.size.width<60) {
        return NO;
    }
    return YES;
}

 

右邊側滑：

- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer
{
    CGPoint velocity = [(UIPanGestureRecognizer *)gestureRecognizer velocityInView:self];
    CGPoint location = [gestureRecognizer locationInView:self];
    
    if (velocity.x > 0.0f&&(int)location.x%(int)[UIScreen mainScreen].bounds.size.width>[UIScreen mainScreen].bounds.size.width-60) {
        return NO;
    }
    return YES;
}

 

奉上一個自定義的UIScrollView的代碼：

DXCustomScrollView.h

#import <UIKit/UIKit.h>

@interface DXCustomScrollView : UIScrollView

@end

DXCustomScrollView.m

#import "DXCustomScrollView.h"

@interface DXCustomScrollView()

@end

@implementation DXCustomScrollView

- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer
{
    CGPoint velocity = [(UIPanGestureRecognizer *)gestureRecognizer velocityInView:self];
    CGPoint location = [gestureRecognizer locationInView:self];
    
    if (velocity.x > 0.0f&&(int)location.x%(int)[UIScreen mainScreen].bounds.size.width<60) {
        return NO;
    }
    return YES;
}

@end