［基本解决］Swift在TableView添加section和row行然后滚动

想要实现，在append了对应的item后，再去滚动：

            gContactViewController?.contactTableView.beginUpdates()
            let itemIndexPath:NSIndexPath = NSIndexPath(forRow: indexInSection, inSection: sectionIdx)
            print("itemIndexPath=\(itemIndexPath)")

            //check is append or insert
            gContactViewController?.contactTableView.insertRowsAtIndexPaths(
                [itemIndexPath],
                withRowAnimation: UITableViewRowAnimation.Automatic)
            gContactViewController?.contactTableView.endUpdates()

gContactViewController?.contactTableView.scrollToRowAtIndexPath(itemIndexPath, atScrollPosition: UITableViewScrollPosition.Middle, animated: true)

但是运行失败。

swift tableview append section scroll

Programmatic UITableView Scrolling – Grok Swift

ios – How do i automatically scroll in a table view? Using swift – Stack Overflow

swift tableview append section

ios – Adding sections, separated by dates, to UITableView in Swift – Stack Overflow

Add Rows to Table View Tutorial in iOS8 with Swift – iOScreator

swift tableview append row

Inserting and Deleting Rows and Sections

insertRowsAtIndexPaths(_:withRowAnimation:) – UITableView Class Reference

［基本搞懂］swift中UITableView中如何只刷新某个section的某个单独的行