So I have a table view and a Custom VC.
then I have an object exercises with detailImage as property.
How can I get the indexPath.row from the table row action into my prepareForSegue function?
this returns nil: self.tableView.indexPathForSelectedRow
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "detailsSegue" {
if let indexPath = self.tableView.indexPathForSelectedRow {
let destinationController = segue.destinationViewController as! DetailViewController
print(self.exercises[indexPath.row].image)
destinationController.detailImage = self.exercises[indexPath.row].image
print ("send")
}
}
}
Instead of this in your code:
if let indexPath = self.tableView.indexPathForSelectedRow {
Try this:
if let indexPath = self.tableView.indexPathForSelectedRow() {
After playing around with the sender object in editActionsForRowAtIndexPath
I got it to work. It's maybe a dirty solution but it works.
override func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [UITableViewRowAction]? {
let detailsAction = UITableViewRowAction(style: .Default, title: "Details", handler: {(action:UITableViewRowAction!, indexPath:NSIndexPath!) -> Void in
self.performSegueWithIdentifier("detailsSegue", sender: indexPath) //sender is the indexPath
}
)
and then in the prepareForSegue
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "detailsSegue" {
let indexPath = sender!
let destinationController = segue.destinationViewController as! DetailViewController
print(self.exercises[indexPath.row].image)
There is probably a better way..Anyone to comment?
Related
I am adding values from the first TableView var savedUrls to the first section of var detailsInSection in second TableView. In prepareForSegue, Xcode shows " unresolved Identifier for 'indexPath'. How should I revise the codes?
In first View Controller:
var folderNames = [String]()
var savedUrls = [String]()
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
let url = savedUrls[indexPath.row]
self.performSegueWithIdentifier(segueToDetailsTable, sender: url)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == segueToDetailsTable {
let detailsVC = segue.destinationViewController as! DetailsViewController
detailsVC.detailsInSection[0].append(savedUrls[indexPath.row])
}
}
In Second View Controller:
var sectionTitles = ["WebSite", "Date Saved", "Document Used","Add Notes"]
var detailsInSection = [[String]() , [NSDate]() , [AnyObject]() , String]() ]
indexPath is not a variable defined or passed into prepareForSegue. You are on the right track though. Since you pass the url as the sender in performSegue..., you don't need an indexPath to reference the url. You can check that the sender was a String and use sender as the url that was selected.
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
let url = savedUrls[indexPath.row]
self.performSegueWithIdentifier(segueToDetailsTable, sender: url)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if let url = sender as? String where segue.identifier == segueToDetailsTable {
let detailsVC = segue.destinationViewController as! DetailsViewController
detailsVC.detailsInSection[0].append(url)
}
}
Pass the index path in didSelectRow... as sender parameter and get the url later
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
self.performSegueWithIdentifier(segueToDetailsTable, sender: indexPath)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == segueToDetailsTable {
let indexPath = sender as! NSIndexPath
let url = savedUrls[indexPath.row]
let detailsVC = segue.destinationViewController as! DetailsViewController
detailsVC.detailsInSection[0].append(url)
}
}
When I segue my UIImageView from my NewsTableViewController.swift, the image does not appear in my NewsDetailTableViewController.swift.
Here is an image of my simulator:
Here is an image of my Main.storyboard:
Here is my prepareForSegue() method code:
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?){
if segue.identifier == "showDetail" {
if let indexPath = tableView.indexPathForSelectedRow {
let destinationController = segue.destinationViewController as! NewsDetailTableViewController
destinationController.item = items[indexPath.row]
let newsImage = UIImageView(image: UIImage(named: detailImages[indexPath.row]))
destinationController.image = newsImage
}
}
}
It is also worth mentioning that my image in my NewsTableViewController.swift is set to 0x0, and in my NewsDetailTableViewController.swift, it is set to 600x216. I don't know if this would matter or not. If you desire any code, please do feel free to ask.
FYI, I use Swift.
In prepareForSegue the IBOutlets of your destinationController have not been initialized yet. Just pass detailImages to another array property on NewsDetailTableViewController. Change your prepareForSegue to:
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?){
if segue.identifier == "showDetail" {
if let indexPath = tableView.indexPathForSelectedRow {
let destinationController = segue.destinationViewController as! NewsDetailTableViewController
destinationController.item = items[indexPath.row]
destinationController.imageNames = detailImages
}
}
}
Then in NewsTableViewController add the following code:
var imageNames:[String]?
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
//replace with whatever identifier you're using
var cell:UITableViewCell = self.tableView.dequeueReusableCellWithIdentifier("Cell") as UITableViewCell
cell.imageView?.image = self.imageNames[indexPath.row]?
return cell
}
I need to add a value to the selected row than in prepareForSegue that it does its action.But my prepareForSegue is doing the action before it.When i try to place the "performSegueWithIdentifier" it crashes,also i have added the id to the segue idenfifier in the storyboard.Im working with sqlite.
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
selectedRow = indexPath.row
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if(segue.identifier == "editSegue")
{
let viewController : WorkoutView = segue.destinationViewController as! WorkoutView
viewController.workoutInfoData = marrStudentData.objectAtIndex(selectedRow) as! WorkoutInfo
navigationItem.title = ""
}
}
You can fetch the selected indexPaths from tableView in your prepare for segue
func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if(segue.identifier == "editSegue")
{
if let indexPath = tableView.indexPathForSelectedRow{
let viewController : WorkoutView = segue.destinationViewController as! WorkoutView
viewController.workoutInfoData = marrStudentData.objectAtIndex(indexPath.row) as! WorkoutInfo
navigationItem.title = ""
}
}
}
I have collection view implemented but have an error for the segue. I am trying to hand the image to another view controller using a segue. This is the code for it.
func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath)
{
self.performSegueWithIdentifier("showImage", sender: self)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?)
{
if segue.identifier == "showImage"
{
let indexPaths = self.collectionView!.indexPathsForSelectedItems()!
let indexPath = indexPaths[0] as NSIndexPath
let vc = segue.destinationViewController as! NewViewController
vc.image = self.imageArray[indexPath.row]!
vc.title = self.appleProducts[indexPath.row]
}
}
}
However I am having an error at collectionView!.indexPathsForSelectedItemssaying that Could not find member indexPathsForSelectedItems. Why is this happening and how should it be changed. Thank you
I have mode some changes to your code
Add following changes in your code
func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath)
{
self.performSegueWithIdentifier("showImage", sender: indexPath)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?)
{
if segue.identifier == "showImage"
{
let indexPath : NSIndexPath = sender as! NSIndexPath
let vc = segue.destinationViewController as! NewViewController
vc.image = self.imageArray[indexPath.row]!
vc.title = self.appleProducts[indexPath.row]
}
}
I have a song page with recommended songs in a table view. When a user clicks on a recommended song, I want to essentially reload the song page with the new data. To do that, I'm using this method, with a segue from the cell to its own view controller:
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
let newSong = recommendedTitles[indexPath.row]
self.performSegueWithIdentifier("refreshSong", sender: newSong)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) {
if segue.identifier == "refreshSong" {
let newSong:String = sender as! String
let song = segue.destinationViewController as! SongViewController
song.search = newSong
}
}
But I'm getting an error at let newSong:String = sender as! String, that it could not cast value of type recommendationCell to NSString. Is the best way to do all of this with the aforementioned tableView methods?
You do not have to declare global variable.
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
self.performSegueWithIdentifier("refreshSong", sender: self)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) {
if segue.identifier == "refreshSong" {
let indexPath = tableView.indexPathForSelectedRow()
let song = segue.destinationViewController as! SongViewController
song.search = recommendedTitles[(indexPath?.row)!]
}
}
you try this. Take the variable newSong in declaration section
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
newSong = recommendedTitles[indexPath.row]
self.performSegueWithIdentifier("refreshSong", sender: nil)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) {
if segue.identifier == "refreshSong" {
let song = segue.destinationViewController as! SongViewController
song.search = newSong
}
}