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swiftuitableviewuiscrollviewuiscrollviewdelegate

How to get UITableView last scroll position before show next UIViewController?

I have a question about UITableView.

Because I want to save the UITableView last position in my userdefault before showing next UIViewController.

And when I back to homePage I can read userdefault value to auto scroll to my saving position.

Why I ask this question, because when I back to homePage I'll refresh my viewcontroller and the layout will change, so I can't get exactly position before showing.

Have any idea to me? Thanks

Solution

  • By using contentOffset.

    Save it on leaving:

    float savedVerticalContentOffset = tableView.contentOffset.y;

    and then when you return and refresh just call:

    [tableView setContentOffset:CGPointMake(0, savedVerticalContentOffset)];