How to enable/disable scrolling in UITableView?

问题

I know about this command:

self.tableView.scrollEnabled = true

The question is: I want to lock scrolling according to the scrollView position. For this I do:

let topEdge = scrollView.contentOffset.y
    let followersViewEdge = CGRectGetHeight(self.profileView.frame) - 50

    if topEdge >= followersViewEdge {
        self.tableView.scrollEnabled = true
    }

it works, but the problem is that it does not lock or unlock the scrolling immediately. For locking or unlocking the UITableView scrolling I need to release my finger from the screen and scroll again. In this case it works.

I want to make it immediately, so it locks and unlocks the scrolling while I'm swiping on the screen. How can I do it?

UPDATE

My code works. It's not a problem. Problem is that I need to make these changes immediately, without releasing my finger from the screen.

So, do not answer me how to lock scrolling! I know how to do this.

回答1:

Select tableview
choose Attribute insepector
In scroll view section, uncheck Scrolling Enabled property

回答2:

Force the contentOffset to your max value while scrolling :

let topEdge = scrollView.contentOffset.y
let followersViewEdge = CGRectGetHeight(self.profileView.frame) - 50

if topEdge >= followersViewEdge {
    self.tableView.contentOffset.y = followersViewEdge
}

回答3:

You need to setting up the pan gesture recognizer for your table view and keep listening listener.

By you approach can lock it.

    if topEdge >= followersViewEdge {
        self.tableView.scrollEnabled = true
    }

By the pan gesture recognizer, you can lock/unlock it.

    if(self.tableView.scrollEnabled) {
        self.tableView.scrollEnabled = false
    } else {
        self.tableView.scrollEnabled = true
    }

Example

     // Added the Pan Recognizer for capture the touches
    UIPanGestureRecognizer *panReconizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panReconizer:)];
    panReconizer.maximumNumberOfTouches = panReconizer.minimumNumberOfTouches = 1;
    [self.tableView addGestureRecognizer:panReconizer];


    - (void)panReconizer:(UIPanGestureRecognizer *)pan {
         NSLog(@" ..............  pan detected!! ...................");
         if(self.tableView.scrollEnabled) {
            self.tableView.scrollEnabled = false
        } else {
            self.tableView.scrollEnabled = true
        }
    }

来源：https://stackoverflow.com/questions/35721849/how-to-enable-disable-scrolling-in-uitableview

标签

ios

swift

uitableview

scrollview