如何检测 UITableView 中的单元格选择 - Swift

Question

just wondering how I would go about implementing didSelectRowAtIndexPath or something similar into my app. I have a populated Table View with several dynamic cells and basically I want to change Views once a certain cell is selected.

I am able to get my head around it in Obj-C, but there is nothing on google to help me with Swift! Any help would be appreciated as I am still learning

Answer 1

You can use didSelectRowAtIndexPath in Swift.

func tableView(tableView: UITableView!, didSelectRowAtIndexPath indexPath: NSIndexPath!) {
    NSLog("You selected cell number: \(indexPath.row)!")
    self.performSegueWithIdentifier("yourIdentifier", sender: self)
}

For Swift 3 it's

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    NSLog("You selected cell number: \(indexPath.row)!")
    self.performSegueWithIdentifier("yourIdentifier", sender: self)
}

Just make sure you implement the UITableViewDelegate .

Answer 2

This is how I managed to segue from UITableView cells to other view controllers after implementing cellForRow, numberOfRowsInSection & numberOfSectionsInTable.

//to grab a row, update your did select row at index path method to:

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) { 
    NSLog("You selected cell number: \(indexPath.row)!");

    if indexPath.row == 1 {
        //THE SEGUE 
        self.performSegue(withIdentifier: "goToMainUI", sender: self)
    }
}

Will output: You selected cell number: \\(indexPath.row)!

Remember to match the identifier of your segue in story board to the identifier in the function, eg goToMainUI .

Answer 3

Use the following code to select cell at '0' index programmatically for collectionView.

self.collectionView.reloadData()
DispatchQueue.main.async {
  self.collectionView(self.collectionView, didSelectItemAt: IndexPath(item: 0, section: 0))
}