JXPagingView
JXPagingView copied to clipboard
pujiaxin33
JXPagerListContainerViewController计算出来的生命周期在手指切换的时候是错误的
bug提交前阅读 1.请先仔细阅读文档，尤其是【其他注意事项】文档，里面有常见问题的解决方案； 2.请先搜索已有的Issues，尝试找到相同问题的讨论； 3.请先阅读相关类的API、源码，尝试从源码找到答案； 4.如果以上步骤都未能解决你的疑问，欢迎提交ISSUE；
bug描述 生命周期在用手指切换tab的时候全部错误了
以下两段代码计算生命周期有问题，而且是必现的，我尝试修复，短时间解决不了，麻烦作者给点思路或者给修复下
-
(void)scrollViewDidScroll:(UIScrollView *)scrollView { ...... [self listDidAppearOrDisappear:scrollView]; }
-
(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView { // NSLog(@"2222222"); if (self.willDisappearIndex != -1) { [self listWillAppear:self.willDisappearIndex]; [self listWillDisappear:self.willAppearIndex]; [self listDidAppear:self.willDisappearIndex]; [self listDidDisappear:self.willAppearIndex]; self.willDisappearIndex = -1; self.willAppearIndex = -1; } if (self.delegate && [self.delegate respondsToSelector:@selector(listContainerViewWDidEndScroll:)]) { [self.delegate listContainerViewWDidEndScroll:self]; } }
版本号 1.JXPagingView版本号：2.0.12 2.OC还是Swift版本 OC 3.手机系统版本号：13.6.1 4.手机型号：iphone xs max
复现步骤
- 遇到问题的相关效果、类是：JXPagerListContainerView 2.具体的操作步骤是：比如作者的Demo，第一个例子打开，正常下面三个tab，你左右切换，或者点头部切换都是没问题，生命周期都是正常的，但是如果你能力tab切换到爱好tab，切过去的时候手指一直按照不松开，也就是手指拖动整个屏幕宽度的距离，等切换到第二个tab的时候，生命周期调用的是前一个tab的，以下代码会出问题吗，整个生命周期就混乱了。
截图、GIF 提供bug出现时的截图或者GIF。
可以看到已经用手指切换到了第二个tab，但是你看下面回调的生命周期是错误的，下表是0
`- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView {
if (self.willDisappearIndex != -1) {
CGFloat currentIndexPercent = scrollView.contentOffset.x/scrollView.bounds.size.width;
NSInteger disappearIndex = self.willDisappearIndex;
NSInteger appearIndex = self.willAppearIndex;
if (self.willAppearIndex > self.willDisappearIndex) {
if (currentIndexPercent >= (self.willAppearIndex)) {
NSLog(@"EEEEEEEEEEEEEE");
[self listWillAppear:appearIndex];
[self listWillDisappear:disappearIndex];
[self listDidAppear:appearIndex];
[self listDidDisappear:disappearIndex];
self.willDisappearIndex = -1;
self.willAppearIndex = -1;
}else{
[self listWillAppear:disappearIndex];
[self listWillDisappear:appearIndex];
[self listDidAppear:disappearIndex];
[self listDidDisappear:appearIndex];
self.willDisappearIndex = -1;
self.willAppearIndex = -1;
}
}else {
if (currentIndexPercent <= (self.willAppearIndex)) {
NSLog(@"FFFFFFFFFFFFFFFFF");
[self listWillAppear:appearIndex];
[self listWillDisappear:disappearIndex];
[self listDidAppear:appearIndex];
[self listDidDisappear:disappearIndex];
self.willDisappearIndex = -1;
self.willAppearIndex = -1;
}else{
[self listWillAppear:disappearIndex];
[self listWillDisappear:appearIndex];
[self listDidAppear:disappearIndex];
[self listDidDisappear:appearIndex];
self.willDisappearIndex = -1;
self.willAppearIndex = -1;
}
}
}
if (self.delegate && [self.delegate respondsToSelector:@selector(listContainerViewWDidEndScroll:)]) {
[self.delegate listContainerViewWDidEndScroll:self];
}
}` 我直接在这个方法这样写了，我没有看得很细，您看下是否就可以，我看你的代码是直接不管就回滚到之前的index，我这边做了判断，看下是否可以，我目前看来生命周期就正常了，看你是否可以优化下，修复这个Bug，生命周期对我来说太重要了，我可能考虑不全，麻烦您看下
