我在VC1上有一个UICollectionViewCell，单元格包含一个图像，一个标签和3个按钮。
当我点击单元格时。这会触发我didSelectItemAtIndexPath将我带到编辑项目屏幕。
如何访问每个按钮并将其与我点击的单元格相关联？
因此，如果我添加了6个单元格，并且我单击单元格1，按钮1，它会将我带到一个包含该人信息的生物页面。如果我点击单元格2按钮1，它会带我到相同的生物VC，但与我点击的单元格有不同的信息。
我的困惑在于在何处或如何设置它？
谢谢！
import UIKit
import Parse
class TrainersViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate, AddNewTrainerViewControllerDelegate {
var trainers: [TrainerArray]
required init?(coder aDecoder: NSCoder) {
trainers = [TrainerArray]()
super.init(coder: aDecoder)
loadTrainerItems()
}
//connection to the collection view
@IBOutlet weak var collectionView: UICollectionView!
func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
print("selected")
saveTrainerItems()
}
func numberOfSectionsInCollectionView(collectionView: UICollectionView) -> Int {
return 1
}
func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return trainers.count
}
func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCellWithReuseIdentifier("TrainerCell", forIndexPath: indexPath)
var buttonOne = cell.viewWithTag(10)
buttonOne = indexPath.row
let trainer = trainers[indexPath.row]
configureTrainerForCell(cell, withTrainerArray: trainer)
return cell
}
func configureTrainerForCell(cell: UICollectionViewCell, withTrainerArray trainer: TrainerArray) {
if trainer.trainerImage == nil {
let label = cell.viewWithTag(1000) as! UILabel
trainer.trainerImage = UIImage(named: "defaultImage")
label.text = trainer.name
} else {
let image = cell.viewWithTag(2000) as! UIImageView
image.image = trainer.trainerImage
let label = cell.viewWithTag(1000) as! UILabel
label.text = trainer.name
}
}
override func viewDidLoad() {
super.viewDidLoad()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
//This method adds a new trainer to the trainer array
func addNewTrainerViewController(controller: AddNewTrainerViewController, didFinishAddingItem item: TrainerArray) {
let newRowIndex = trainers.count
trainers.append(item)
let indexPath = NSIndexPath(forRow: newRowIndex, inSection: 0)
let indexPaths = [indexPath]
collectionView.insertItemsAtIndexPaths(indexPaths)
dismissViewControllerAnimated(true, completion: nil)
saveTrainerItems()
}
func addNewTrainerViewController(controller: AddNewTrainerViewController, didFinishDeletingItem item: TrainerArray) {
if let index = trainers.indexOf(item) {
let indexPath = NSIndexPath(forRow: index, inSection: 0)
let indexPaths = [indexPath]
if let _ = collectionView.cellForItemAtIndexPath(indexPath) {
self.trainers.removeAtIndex(index)
self.collectionView.deleteItemsAtIndexPaths(indexPaths)
}
}
dismissViewControllerAnimated(true, completion: nil)
saveTrainerItems()
}
//This Method Edits a Trainer
func addNewTrainerViewController(controller: AddNewTrainerViewController, didFinishEditingItem trainer: TrainerArray) {
if let index = trainers.indexOf(trainer) {
let indexPath = NSIndexPath(forRow: index, inSection: 0)
if let cell = collectionView.cellForItemAtIndexPath(indexPath){
configureTrainerForCell(cell, withTrainerArray: trainer)
}
}
saveTrainerItems()
dismissViewControllerAnimated(true, completion: nil)
}
func addNewTrainerViewControllerDidCancel(controller: AddNewTrainerViewController) {
dismissViewControllerAnimated(true, completion: nil)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "AddTrainer" {
let navigationController = segue.destinationViewController as! UINavigationController
let controller = navigationController.topViewController as! AddNewTrainerViewController
controller.delegate = self
} else if segue.identifier == "EditTrainer" {
let navigationController = segue.destinationViewController as! UINavigationController
let controller = navigationController.topViewController as! AddNewTrainerViewController
controller.delegate = self
if let indexPath = collectionView.indexPathForCell(sender as! UICollectionViewCell) {
controller.trainerToEdit = trainers[indexPath.row]
}
}
}
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
}
func documentsDirectory() -> String {
let paths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)
return paths[0]
}
func dataFilePath() -> String {
return (documentsDirectory() as NSString)
.stringByAppendingPathComponent("Trainers.plist")
}
func saveTrainerItems() {
let data = NSMutableData()
let archiver = NSKeyedArchiver(forWritingWithMutableData: data)
archiver.encodeObject(trainers, forKey: "TrainersArray")
archiver.finishEncoding()
data.writeToFile(dataFilePath(), atomically: true)
}
func loadTrainerItems() {
let path = dataFilePath()
if NSFileManager.defaultManager().fileExistsAtPath(path) {
if let data = NSData(contentsOfFile: path) {
let unarchiver = NSKeyedUnarchiver(forReadingWithData: data)
trainers = unarchiver.decodeObjectForKey("TrainersArray") as! [TrainerArray]
unarchiver.finishDecoding()
}
}
}
@IBAction func logOut(sender: AnyObject) {
let alert = UIAlertController(title: "Are You Sure You Want To Log Out?", message: "Please Enter Your Username", preferredStyle: UIAlertControllerStyle.Alert)
alert.addTextFieldWithConfigurationHandler { (textField) -> Void in
}
alert.addAction(UIAlertAction(title: "Log Out", style: UIAlertActionStyle.Default, handler: { (action) -> Void in
let textF = alert.textFields![0] as UITextField
if textF.text! != PFUser.currentUser()?.username {
self.displayGenericAlert("Incorrect Username!", message: "Please Enter a Valid Username")
} else if textF.text! == PFUser.currentUser()?.username {
PFUser.logOut()
_ = PFUser.currentUser()
self.dismissViewControllerAnimated(true, completion: nil)
}
}))
alert.addAction(UIAlertAction(title: "Cancel", style: UIAlertActionStyle.Default, handler: { (action) -> Void in
if action == true {
self.dismissViewControllerAnimated(false, completion: nil)
}}))
self.presentViewController(alert, animated: true, completion: nil)
}
func displayGenericAlert(title: String, message: String) {
let alert = UIAlertController(title: title, message: message, preferredStyle: UIAlertControllerStyle.Alert)
alert.addAction(UIAlertAction(title: "Ok", style: .Default, handler: { (action) -> Void in
}))
self.presentViewController(alert, animated: true, completion: nil)
}
@IBAction func bioSegueButton(sender: AnyObject) {
}
}
答案 0 :(得分：0)
您可以从索引'indexpath.row'获取数组中的数据。
答案 1 :(得分：0)
您可以在按钮上添加一个标签，该标签与其所在单元格的索引相对应。在cellForItemAtIndexPath中，您可以添加类似......
button.tag = indexPath.row
在按钮的选择器中，您可以访问它......
func buttonSelector(sender: UIButton) {
let index = sender.tag
let trainer = trainers[index]
}
编辑：
您可能在cellForRowAtIndexPath中执行的更完整版本：
func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCellWithReuseIdentifier("TrainerCell", forIndexPath: indexPath) as? MyCollectionViewCell
var buttonOne = cell?.button1
buttonOne?.tag = indexPath.row
let trainer = trainers[indexPath.row]
configureTrainerForCell(cell, withTrainerArray: trainer)
return cell!
}
您的收藏品查看单元格类：
class MyCollectionViewCell: UICollectionViewCell {
@IBOutlet weak var button1: UIButton! // connect this to the button in your interface builder's collection view cell.
// Do the same for any other subviews.
}
同样在界面构建器中，将集合视图单元原型的类更改为此新的自定义类。