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我的故事板中有一個UIScrollView垂直滾動。在這個scrollView裏面，我編程創建了一個水平的UIScrollView。UIScrollView內UIScrollView問題
垂直scrollView被稱爲滾動。水平的UIScrollView被稱爲scrollInfo。由於某些原因，我無法註冊使用水平scrollInfo的時候。任何想法，爲什麼這不工作？
這是我viewDidLoad中：
scrollInfo = [[UIScrollView alloc] initWithFrame:CGRectMake(0,
155,self.view.frame.size.width, self.view.frame.size.height/4)];
//This will create a scrollview of device screen frame
scrollInfo.scrollEnabled = YES;
NSInteger numberOfViews = 3;
for (int i = 0; i < numberOfViews; i++) {
CGFloat xOrigin = i * self.view.frame.size.width;
UIView *awesomeView = [[UIView alloc] initWithFrame:CGRectMake(xOrigin, 0,
self.view.frame.size.width, self.view.frame.size.height/4)];
awesomeView.backgroundColor = [UIColor colorWithRed:0.5/i green:0.5 blue:0.5
alpha:1];
[scrollInfo addSubview:awesomeView];
}
// 3 views added horizontally to the UIScrollView by using xOrigin.
scrollInfo.contentSize = CGSizeMake(self.view.frame.size.width * numberOfViews,
self.view.frame.size.height/4);
[scroller addSubview:scrollInfo];
//Add scrollview to viewcontroller
scrollInfo.pagingEnabled = YES;
pageControl = [[UIPageControl alloc] init]; //SET a property of UIPageControl
pageControl.frame = CGRectMake(0,200,self.view.frame.size.width,
self.view.frame.size.height/8);
pageControl.numberOfPages = 3; //as we added 3 diff views
pageControl.currentPage = 0;
[scroller addSubview:pageControl];
這裏是我的scrollViewDidScroll方法：
- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
if ([mainTableView isEqual: scrollView]) {
if (mainTableView.contentOffset.y > 0) {
// yourTableView is not on top.
NSLog(@"not top");
}
else {
// yourTableView is already on top.
NSLog(@"is top");
[UIView animateWithDuration:0.5f delay:0
options:UIViewAnimationOptionCurveLinear animations:^{
scroller.contentOffset = CGPointMake(0, 0);
} completion:NULL];
}
}
else {
CGFloat pageWidth = self.view.frame.size.width;
int page = floor((scrollInfo.contentOffset.x - pageWidth/2)/pageWidth) +
1; //this provide you the page number
pageControl.currentPage = page;// this displays the white dot as current page
NSLog(@"page");
}
}