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优化ScrollView的CurrentPage状态更新 #14

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优化ScrollView的CurrentPage状态更新 #14

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优化ScrollView的CurrentPage状态更新
szmichaelyb Jun 20, 2018
846343d
Merge branch 'master' into develop
szmichaelyb Sep 20, 2021
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68 changes: 54 additions & 14 deletions DHGuidePageHUD/DHGuidePageHUD/DHGuidePageHUD.m
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Original file line number Diff line number Diff line change
Expand Up @@ -90,34 +90,72 @@ - (instancetype)dh_initWithFrame:(CGRect)frame imageNameArray:(NSArray<NSString
}
return self;
}
#pragma mark - ------------UIScrollView代理方方法------------
//- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollview {
// int page = scrollview.contentOffset.x / scrollview.frame.size.width;
// [self.imagePageControl setCurrentPage:page];
// if (self.imageArray && page == self.imageArray.count-1 && self.slideInto == NO) {
// [self buttonClick:nil];
// }
// if (self.imageArray && page < self.imageArray.count-1 && self.slideInto == YES) {
// self.slideIntoNumber = 1;
// }
// if (self.imageArray && page == self.imageArray.count-1 && self.slideInto == YES) {
// UISwipeGestureRecognizer *swipeGestureRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:nil action:nil];
// if (swipeGestureRecognizer.direction == UISwipeGestureRecognizerDirectionRight){
// self.slideIntoNumber++;
// if (self.slideIntoNumber == 3) {
// [self buttonClick:nil];
// }
// }
// }
//}

#pragma mark - UIScrollViewDelegate
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollview {
int page = scrollview.contentOffset.x / scrollview.frame.size.width;
if (self.imageArray && page == self.imageArray.count-1 && self.slideInto == NO) {
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
// 不在这里设置currentPage --- 因为当滑动比较快速的时候，就出现currentPage更新比较慢
// [self.imagePageControl setCurrentPage:page];
// 这里就不用四舍五入了，因为在scroll滚动减速完成时才执行（相当于scroolView滚动静止的那一刻），四舍五入和不四舍五入，效果都一样
int img_count = (int)self.imageArray.count;
int page = (int)(scrollView.contentOffset.x / scrollView.frame.size.width);
if (self.imageArray && page == img_count - 1 && self.slideInto == NO) {
[self buttonClick:nil];
}
if (self.imageArray && page < self.imageArray.count-1 && self.slideInto == YES) {
if (self.imageArray && page < img_count - 1 && self.slideInto == YES) {
self.slideIntoNumber = 1;
}
if (self.imageArray && page == self.imageArray.count-1 && self.slideInto == YES) {
UISwipeGestureRecognizer *swipeGestureRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:nil action:nil];
if (swipeGestureRecognizer.direction == UISwipeGestureRecognizerDirectionRight){
if (self.imageArray && page == img_count - 1 && self.slideInto == YES) {
UISwipeGestureRecognizer * swipeGestureRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:nil action:nil];
if (swipeGestureRecognizer.direction == UISwipeGestureRecognizerDirectionRight) {
self.slideIntoNumber++;
if (self.slideIntoNumber == 3) {
[self buttonClick:nil];
// [self handleSingleTapFrom];
}
}
}
}

- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
// 四舍五入,保证pageControl状态跟随手指滑动及时刷新

// 这里也不能设置currentPage，状态无法及时更新
//- (void)scrollViewWillBeginDecelerating:(UIScrollView *)scrollView
//{
// int page = (int)(scrollView.contentOffset.x / scrollView.frame.size.width);
// [self.imagePageControl setCurrentPage:page];
//}

// 2018-06-20 修改:新增一个代理方法，专门用来设置currentPage
- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
// int page = (int)(scrollView.contentOffset.x / scrollView.frame.size.width);
// [self.imagePageControl setCurrentPage:page];

// 四舍五入，保证pageControl状态跟随手指滑动刷新
[self.imagePageControl setCurrentPage:(int)((scrollView.contentOffset.x / scrollView.frame.size.width) + 0.5f)];
}

#pragma mark - EventClick
- (void)buttonClick:(UIButton *)button {
- (void)buttonClick:(UIButton *)button
{
[UIView animateWithDuration:DDHidden_TIME animations:^{
self.alpha = 0;
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(DDHidden_TIME * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
Expand All @@ -126,12 +164,14 @@ - (void)buttonClick:(UIButton *)button {
}];
}

- (void)removeGuidePageHUD {
- (void)removeGuidePageHUD
{
[self removeFromSuperview];
}

/**< APP视频新特性页面(新增测试模块内容) */
- (instancetype)dh_initWithFrame:(CGRect)frame videoURL:(NSURL *)videoURL {
- (instancetype)dh_initWithFrame:(CGRect)frame videoURL:(NSURL *)videoURL
{
if ([super initWithFrame:frame]) {
self.playerController = [[MPMoviePlayerController alloc] initWithContentURL:videoURL];
[self.playerController.view setFrame:frame];
Expand Down