Awake() not called when inactive gameobject

if a prefab is inactive, the prefab Awake() not called after instantiated.

 set gameobject active after instantiating it or set prefab active.

 but you can call your own method in inactive gameobject.
 Inactive Gameobject means that there is nothing in unity scene world. Unity API not called. Awake(), Start(), Update(), OnCollision() and so on...

using Random = UnityEngine.Random;

using Random = UnityEngine.Random;

UITableView: changing footer view's size programmatically doesn't work

myTable.tableFooterView = myFooterView; 

Re-assign your footer view to the table. The table will recognize it has a new footer and re-do whatever layout needs to occur for the proper size of the footer.

https://stackoverflow.com/questions/6672528/uitableview-changing-footer-views-size-programmatically-doesnt-work

Why do headers and footers follow movement of row when deleting it?

https://stackoverflow.com/questions/29942070/why-do-headers-and-footers-follow-movement-of-row-when-deleting-it

Simply return headerCell.contentView instead of headerCell and your problem will be resolved.

Dynamically Sized Table View Header or Footer Using Auto Layout

override func viewDidLayoutSubviews() {
    super.viewDidLayoutSubviews()
    // Dynamic sizing for the header view
    if let headerView = tableView.tableHeaderView {
        let height = headerView.systemLayoutSizeFittingSize(UILayoutFittingCompressedSize).height
        var headerFrame = headerView.frame

        // If we don't have this check, viewDidLayoutSubviews() will get
        // repeatedly, causing the app to hang.

        if height != headerFrame.size.height {
            headerFrame.size.height = height
            headerView.frame = headerFrame
            tableView.tableHeaderView = headerView
        }
    }
}

http://collindonnell.com/2015/09/29/dynamically-sized-table-view-header-or-footer-using-auto-layout/

notice: distributing ad hoc ipa

Building adhoc ipa file, You must check "Manually manage signing".
and you just choose its adhoc app provisioning file and certificate

(x) Automatically manage signing
(o) Manually manage signing

uitableview header top spacing issue

self.automaticallyAdjustScrollViewInsets = false