59 lines
2.1 KiB
Objective-C
Executable File
59 lines
2.1 KiB
Objective-C
Executable File
//
|
||
// GKDYScrollView.m
|
||
// GKDYVideo
|
||
//
|
||
// Created by QuintGao on 2018/9/23.
|
||
// Copyright © 2018 QuintGao. All rights reserved.
|
||
//
|
||
|
||
#import "GKDYScrollView.h"
|
||
|
||
@implementation GKDYScrollView
|
||
|
||
#pragma mark - 解决全屏滑动时的手势冲突 与 左滑push手势冲突
|
||
// 当UIScrollView在水平方向滑动到第一个时，默认是不能全屏滑动返回的，通过下面的方法可实现其滑动返回。
|
||
- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer {
|
||
if ([self panBack:gestureRecognizer]) {
|
||
return NO;
|
||
}
|
||
return YES;
|
||
}
|
||
|
||
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
|
||
{
|
||
if ([self panBack:gestureRecognizer]) {
|
||
return YES;
|
||
}
|
||
|
||
return NO;
|
||
}
|
||
|
||
- (BOOL)panBack:(UIGestureRecognizer *)gestureRecognizer {
|
||
if (gestureRecognizer == self.panGestureRecognizer) {
|
||
CGPoint point = [self.panGestureRecognizer translationInView:self];
|
||
UIGestureRecognizerState state = gestureRecognizer.state;
|
||
|
||
// 设置手势滑动的位置距屏幕左边的区域
|
||
CGFloat locationDistance = self.bounds.size.width;
|
||
|
||
if (state == UIGestureRecognizerStateBegan || state == UIGestureRecognizerStatePossible) {
|
||
CGPoint location = [gestureRecognizer locationInView:self];
|
||
if (point.x > 0 && location.x < locationDistance && self.contentOffset.x <= 0) {
|
||
return YES;
|
||
}
|
||
|
||
// 临界点：scrollView滑动到最后一屏时的x轴位置，可根据需求改变
|
||
CGFloat criticalPoint = self.frame.size.width;
|
||
|
||
// point.x < 0 代表左滑即手指从屏幕右边向左移动
|
||
// 当UIScrollview滑动到临界点时，则不再相应UIScrollview的滑动左滑手势，防止与左滑手势冲突
|
||
if (point.x < 0 && self.contentOffset.x + criticalPoint >= self.contentSize.width) {
|
||
return YES;
|
||
}
|
||
}
|
||
}
|
||
return NO;
|
||
}
|
||
|
||
@end
|