How to Make the scroll of a TableView inside ScrollView behave naturally

Question

I need to do this app that has a weird configuration.

As shown in the next image, the main view is a UIScrollView. Then inside it should have a UIPageView, and each

Answer 1

After many trials and errors, this is what worked best for me. The solution has to solve two needs 1) determine who's scrolling property should be used; tableView or scrollView? 2) make sure that the tableView doesn't give authority to the scrollView until it has reached the top of it's table/content.

In order to see if the scrollview should be used for scrolling vs the tableview, i checked to see if the UIView right above my tableview was within frame. If the UIView is within frame, it's safe to say the scrollView should have authority to scroll. If the UIView is not within frame, that means that the tableView is taking up the entire window, and therefor should have authority to scroll.

func scrollViewDidScroll(_ scrollView: UIScrollView) {

    if scrollView.bounds.intersects(UIView.frame) == true {
     //the UIView is within frame, use the UIScrollView's scrolling.   

        if tableView.contentOffset.y == 0 {
            //tableViews content is at the top of the tableView.

        tableView.isUserInteractionEnabled = false
       tableView.resignFirstResponder()
        print("using scrollView scroll")

        } else {

            //UIView is in frame, but the tableView still has more content to scroll before resigning its scrolling over to ScrollView.

            tableView.isUserInteractionEnabled = true
            scrollView.resignFirstResponder()
            print("using tableView scroll")
        }

    } else {

        //UIView is not in frame. Use tableViews scroll.

        tableView.isUserInteractionEnabled = true
       scrollView.resignFirstResponder()
        print("using tableView scroll")

    }

}

hope this helps someone!

Answer 2

None of the answers here worked perfectly for me. Each one had it's owned nuanced problem (needing to do a repeated swipe when one scrollview hit it's bottom, or the scroll indicator not looking correct, etc), so figured I'd throw in another answer.

Ole Begemann has a great write up on doing this exactly https://oleb.net/blog/2014/05/scrollviews-inside-scrollviews/

Despite being an old post, the concepts still apply to the current APIs. Additionally, there is a maintained (Xcode 9 compatible) Objective-C implementation of his approach https://github.com/eyeem/OLEContainerScrollView

Answer 3

I tried the solution marked as the correct answer, but it was not working properly. The user need to click two times on the table view for scroll and after that I was not able to scroll the entire screen again. So I just applied the following code in viewDidLoad():

tableView.addGestureRecognizer(UISwipeGestureRecognizer(target: self, action: #selector(tableViewSwiped)))
scrollView.addGestureRecognizer(UISwipeGestureRecognizer(target: self, action: #selector(scrollViewSwiped)))

And the code below is the implementation of the actions:

func tableViewSwiped(){
    scrollView.isScrollEnabled = false
    tableView.isScrollEnabled = true
}

func scrollViewSwiped(){
    scrollView.isScrollEnabled = true
    tableView.isScrollEnabled = false
}

Answer 4

CGFloat tableHeight = 0.0f;

YourArray =[response valueForKey:@"result"];

tableHeight = 0.0f;
for (int i = 0; i < [YourArray count]; i ++) {
    tableHeight += [self tableView:self.aTableviewDoc heightForRowAtIndexPath:[NSIndexPath indexPathForRow:i inSection:0]];
}

self.aTableviewDoc.frame = CGRectMake(self.aTableviewDoc.frame.origin.x, self.aTableviewDoc.frame.origin.y, self.aTableviewDoc.frame.size.width, tableHeight);

Answer 5

I think there are two options.

Since you know the size of the scroll view and the main view, you are unable to tell whether the scroll view hit the bottom or not.

if (scrollView.contentOffset.y >= (scrollView.contentSize.height - scrollView.frame.size.height)) {
    // reach bottom
}

So when it hit; you basically set

[contentScrollView setScrollEnabled:NO];

and other way around for your tableView.

The other thing, which is more precise I think, is to add Gesture to your views.

UITapGestureRecognizer *tapRecognizer = [[UITapGestureRecognizer alloc]
initWithTarget:self action:@selector(respondToTapGesture:)];

// Specify that the gesture must be a single tap
tapRecognizer.numberOfTapsRequired = 1;

// Add the tap gesture recognizer to the view
[self.view addGestureRecognizer:tapRecognizer];

// Do any additional setup after loading the view, typically from a nib

So when you add Gesture, you can simply control the active view by changing setScrollEnabled in the respondToTapGesture.

Answer 6

If you are facing problem with the nested scrolling issue , here tis the simplest solution for it .

1. go to your design screen
2. select your scroll view and then disable bounce on scroll
3. if your view uses table view inside scroll view then disable bounce on scroll of the table view as well
4. run and check it is solved

check how to disable bounce on scroll of a scroll view

check how to disable bounce on scroll of a tableview view