'NSInvalidArgumentException'-[UIViewController tableView：numberOfRowsInSection：]-无法识别的选择器已发送到实例

Question

I know this is dublicate question (and extremely sorry), but I've tried everything I've found on SO so far, but I am still receiving error this error:

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UIViewController tableView:numberOfRowsInSection:]: unrecognized selector sent to instance 0x7fc4a9705960'

Let me clarify the parts clearly with images, so we can produce a good answer for solving related problem.

This is the folder view ( ViewController - main view, and TableView1 is child):

My TableView1.xib file has:

.

I have also edited my TableView1.swift :

override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
      return 1
}

override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return 10
}

---

In my Main.Storyboard :

When I select View Controller ( ) it looks like this:

• 1. 
• 2. 

However, when I clicked on the View ( ):

• 1. 
• 2. 

What am I doing wrong or missing on the way?

More Info:

Answer 1

-[UIViewController tableView:numberOfRowsInSection:]:

So as per the error log you have somewhere type mismatch when you set deletegate and datasource.Its happening because on xib you say the tableview1.xib should implement datasource and delegate.But in ViewController1.swift you are mistakenly referencing to UIViewController. now you see UIViewController is just unknown about implementing delegate and datasource.As it dont find (obviously) it crashes. so:

let controller : UIViewController = UIViewController(nibName: "TableView1", bundle: nil)

changed to:

let controller : UITableViewController = UITableViewController(nibName: "TableView1", bundle: nil)

should work.

Answer 2

Did you call this function else where?

    override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return 10

}

It looks like this function being called besides the delegate.

Answer 3

No clue about Swift, but ObjC on iOS...

The Exception says that the class UIViewController can't handle the message [UIViewController tableView:numberOfRowsInSection:]. This indicates, that at some point, the dataSource is changed to "super".

Do you need the "override"? You're not overriding a message implementation, since UIViewController doesn't implement one.