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1つのビューコントローラ内に2つのコレクションビューがあります。 2番目のコレクションビューには、最初のコレクションビューのアイテムの選択に基づいてそのコンテンツを表示する必要があります。私はそれが表示されるデータを取得するポイントにはすべて働いているが、私はviewcontrollerは、データ（セルイメージ、説明書など）を表示していない再読み込みしていないためだと思う。どのように私は強制的にビューをリフレッシュすることができますか、またはより良い方法があるか、または2番目のコレクションビューに結果を表示していますか？クラスのcollectionviewからのcollentionviewの表示
完全なコードは以下の通りです：すべてのUIの更新がメインスレッド上で実行する必要があるため
import UIKit
import Parse
private let reuseIdentifierPart = "CellPart"
private let reuseIdentifierPiece = "CellPiece"
class JourneyViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate {
// passed packName from PackViewController
var selectedPack: String!
var selectedPart: String!
@IBOutlet var collectionViewPart: UICollectionView!
@IBOutlet var collectionViewPiece: UICollectionView!
struct partStruct {
var partName : String
var partDescription : String
var partTitle : String
var partImage : PFFile
var partID: String
}
struct pieceStruct {
var pieceName : String
//var pieceDescription : String
//var pieceTitle : String
var pieceImage : PFFile
}
var partArray = [partStruct]()
var pieceArray = [pieceStruct]()
var refreshView: UIViewController!
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
// if selected pack not nil
//--------------------------------------------- PART DISPLAY IN COLLECTION ----
if let partsToDisplay = selectedPack {
let partQuery = PFQuery(className: "Part")
//have to create PFObject from selectedPack
partQuery.whereKey("fromPack", equalTo: PFObject(outDataWithClassName: "Pack", objectId: selectedPack))
partQuery.findObjectsInBackground(block: { (objectsArray, error) in
if error != nil {
print(error!)
} else if let parts = objectsArray {
for object in parts {
let arrayName = object.object(forKey: "partName") as! String
let arrayDescription = object.object(forKey: "partDescription") as! String
let arrayTitle = object.object(forKey: "partTitle") as! String
let arrayImage = object.object(forKey: "partImage") as! PFFile
//let arrayPoint = object.object(forKey: "fromPack") as! String
let arrayID = object.objectId as String!
self.partArray.append(partStruct(partName: arrayName, partDescription: arrayDescription, partTitle: arrayTitle, partImage: arrayImage, partID: arrayID!))
}
self.partArray = self.partArray.sorted{ $0.partName < $1.partName }
self.collectionViewPart?.reloadData()
}
})
}
}//viewwillappear
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
if collectionView == self.collectionViewPart {
//--------------------------------------------- PIECE DISPLAY IN COLLECTION ----
print("I selected an item in the Parts stack")
selectedPart = self.partArray[indexPath.item].partID
print("i selected item \(selectedPart)")
if let piecesToDisplay = selectedPart {
let pieceQuery = PFQuery(className: "Piece")
//have to create PFObject from selectedPack
pieceQuery.whereKey("fromPart", equalTo: PFObject(outDataWithClassName: "Part", objectId: selectedPart))
pieceQuery.findObjectsInBackground(block: { (objectsArray, error) in
if error != nil {
print(error!)
} else if let pieces = objectsArray {
print(objectsArray?.count)
for object in pieces {
let arrayName = object.object(forKey: "pieceName") as! String
let arrayImage = object.object(forKey: "pieceImage") as! PFFile
self.pieceArray.append(pieceStruct(pieceName: arrayName, pieceImage: arrayImage))
}
self.pieceArray = self.pieceArray.sorted{ $0.pieceName < $1.pieceName }
self.collectionViewPiece?.reloadData()
}
})
} else {
// this is for selecting somehitng in the vertical stack
print("WERE GOING TO GO TO THE NEXT SCREEN AND PLAY THE SOUND FILE")
}
}
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
if collectionView == self.collectionViewPart {
//pass this to the piece query when selected
let selectedPart = self.partArray[indexPath.item].partName
//--------------------------------------------- PART HOW TO DISPLAY EACH ITEM ----
let cellPart: PartCollectionViewCell = collectionViewPart.dequeueReusableCell(withReuseIdentifier: reuseIdentifierPart, for: indexPath) as! PartCollectionViewCell
//cellPart.labelCell.text = self.packArray[indexPath.item].packDescription
//cellPart.labelCell.textColor = MyFunctions.UIColorFromHEX(hexValue: 0x0c1537)
cellPart.imageCellPart.file = self.partArray[indexPath.item].partImage
cellPart.imageCellPart.loadInBackground()
cellPart.imageCellPart.layer.masksToBounds = true
cellPart.imageCellPart.layer.cornerRadius = cellPart.imageCellPart.frame.height/2
cellPart.imageCellPart.layer.borderWidth = 3
cellPart.imageCellPart.layer.borderColor = MyFunctions.UIColorFromHEX(hexValue: 0x62aca2).cgColor
return cellPart
} else {
//--------------------------------------------- PIECE HOW TO DISPLAY EACH ITEM ----
let cellPiece: PieceCollectionViewCell = collectionViewPiece.dequeueReusableCell(withReuseIdentifier: reuseIdentifierPiece, for: indexPath) as! PieceCollectionViewCell
//cellPiece.labelCell.text = self.packArray[indexPath.item].packDescription
//cellPiece.labelCell.textColor = MyFunctions.UIColorFromHEX(hexValue: 0x0c1537)
cellPiece.imageCellPiece.file = self.pieceArray[indexPath.item].pieceImage
cellPiece.imageCellPiece.loadInBackground()
cellPiece.imageCellPiece.layer.masksToBounds = true
cellPiece.imageCellPiece.layer.cornerRadius = cellPiece.imageCellPiece.frame.height/2
cellPiece.imageCellPiece.layer.borderWidth = 3
cellPiece.imageCellPiece.layer.borderColor = MyFunctions.UIColorFromHEX(hexValue: 0x62aca2).cgColor
return cellPiece
}
}
// MARK: UICollectionViewDataSource
func numberOfSections(in collectionView: UICollectionView) -> Int {
return 1
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
if collectionView == self.collectionViewPart {
return self.partArray.count
} else {
return self.pieceArray.count
}
}
override func viewDidLoad() {
super.viewDidLoad()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
}//class
まず、代理人を自己に割り当てて、結果を書き込んでください。 – C0mrade