Insert new row into a section of UITableView based on selected row in UIPickerView - Swift

Question

I have a custom inline UIPickerView (essentially just a expanding/collapsing UIPickerView) and there are 3 options (rows) in the picker view: "Weekly", "Monthly" and "Enter Manually". What I am trying to accomplish is that if a user chooses the row "Enter Manually", a new row is inserted below the row containing the custom UIPickerView (which would contain a custom TextInputCell I have created - but thats aside from the matter). The UITableView represents a form where the user can create an "event" so to speak. There are 4 sections and each section has a different amount of rows, some rows have expanding/collapsing UIPickerViews and others have custom UITextFields, and others have expanding/collapsing UIDatePickers. I only want this to happen for 1 particular UIPickerView, but I cannot seem to get it working. I had tried something like this in the didSelectRowAtIndexPath for when the UIPickerView is collapsed from selecting it's row:

   tableView.beginUpdates()
    if(cell.isKindOfClass(PickerCell)) {
        let pickerTableViewCell = cell as! PickerCell
        if(!pickerTableViewCell.isExpanded() && pickerTableViewCell.rightLabelText() == numClasses[2]) {
            alertOptions.insert("Number of Weeks", atIndex: 1)
            numberOfRowsAtSection[2] = 5
            tableView.insertRowsAtIndexPaths([
                NSIndexPath(forRow: alertOptions.count-3, inSection: 2)
                ], withRowAnimation: .Automatic)
        }
    }
    tableView.endUpdates()

The numClasses is an array with the UIPickerView row data:

let numClasses = ["Weekly", "Monthly", "Enter Manually"]

All the UITableView data is in separate arrays for each section like follows:

var numberOfRowsAtSection: [Int] = [3, 4, 4, 3]

let mainOptions = ["Client Name", "Invoicing Email", "Invoicing Address"]
let dateOptions = ["All Day", "Starts", "Ends", "Time Zone"]
var alertOptions = ["How Many Classes", "Shown on Calendar As", "Alert by Email", "Alert by Text"]
let billingOptions = ["Amount Charged", "Tax Included", "Billing Date"]

And then I suppose I would just put a condition for everything between tableBeginUpdates() and tableEndUpdates() to test if it was the right UIPickerView like:

if(pickerViewTableCell.pickerView == numClassesPicker.pickerView) { ... }

Is what I'm trying to do possible or am I on the right track? Help!

Here are some images for a better visual:

Prior to selecting "Enter Manually":

During selecting "Enter Manually", UIPickerView is expanded:

And after, with it now collapsed and "Enter Manually" Selected, What I'm going for here is to now have a new row between "How Many Classes" and "Show on Calendar As":

Answer 1

In alertOptions, just add a new object and reload the tableView after you are finished with the action in the pickerView.

Answer 2

其中一个主要问题是我没有使用tableView.reloadData()但除此之外，我最终编写的实现是：

        tableView.beginUpdates()

        if(cell.isKindOfClass(PickerCell)) {

            let pickerTableViewCell = cell as! PickerCell

            if(pickerTableViewCell.pickerView == numClassesPicker.pickerView && numberOfRowsAtSection[2] < 5) {

                let newRowIndex = alertOptions.count - 4
                let newNumRows = 5

                if(!pickerTableViewCell.isExpanded() && pickerTableViewCell.rightLabelText() == numClasses[2]) {

                    alertOptions.insert("Number of Weeks", atIndex: 1)
                    numberOfRowsAtSection[2] = newNumRows

                    tableView.insertRowsAtIndexPaths([NSIndexPath(forRow: newRowIndex, inSection: 2)],
                        withRowAnimation: .Automatic)
                    tableView.reloadData()
                }

            } else if(numberOfRowsAtSection[2] == 5) {

                let oldRowIndex = alertOptions.count - 5
                let numRows = 4

                alertOptions.removeAtIndex(1)
                numberOfRowsAtSection[2] = numRows

                tableView.deleteRowsAtIndexPaths([NSIndexPath(forRow: oldRowIndex, inSection: 2)],
                    withRowAnimation: .Automatic)
                tableView.reloadData()

            }
        }

        tableView.endUpdates()

然后在didSelectRowAtIndexPath tableView委托中我有一个条件来测试numberOfRowsAtSection[2]中有多少行，然后返回我想要的单元格类型