自定义控件的故事板中的奇怪错误

Question

这是错误：

Base.lproj/Main.storyboard: error: IB Designables: Failed to update auto layout status: The agent raised a "NSInternalInconsistencyException" exception: could not dequeue a view of kind: UICollectionElementKindCell with identifier WalletCurrencyCollectionCell - must register a nib or a class for the identifier or connect a prototype cell in a storyboard

我在故事板中有钱包控制

钱包控件在 UICOllectionView 中有 4 个单元格，但它在故事板中给出了这个错误（但是当我启动代码时，一切正常，它只是在故事板中给出了错误）。但是如果我设置 number of cells = 0 ，它工作正常，所以问题出在集合视图 cell

这是单元格的结构

这里是钱包控件的结构

这里是钱包控制的代码：

import UIKit

class WalletCurrencyCollectionCell: UICollectionViewCell {
    @IBOutlet var labelAccount: UILabel!

}

@IBDesignable class WalletControl: UIView, UIPickerViewDelegate, UIPickerViewDataSource, UICollectionViewDelegate,     UICollectionViewDataSource, UICollectionViewDelegateFlowLayout {
@IBOutlet var labelInYourAccount: UILabel!
@IBOutlet var labelOtherAccounts: UILabel!
@IBOutlet var collectionViewMain: UICollectionView!

required init(coder aDecoder: NSCoder) {
    super.init(coder: aDecoder)!

    setup()
}

override init(frame: CGRect) {
    super.init(frame: frame)

    setup()
}

func setup() {
    view = loadViewFromNib()
    view.frame = bounds
    view.autoresizingMask = [.FlexibleHeight ,.FlexibleWidth]
    addSubview(view)

    // localizations
    labelInYourAccount.text = "wallet_label_inYourAccount".localized
}

override func awakeFromNib() {
    // register nib
    let collectionCellNib = UINib(nibName: "WalletCurrencyCollectionCell", bundle: nil)
    collectionViewMain.registerNib(collectionCellNib, forCellWithReuseIdentifier: "WalletCurrencyCollectionCell")

}

func loadViewFromNib() -> UIView {
    let bundle = NSBundle(forClass: self.dynamicType)
    let nib = UINib(nibName: "WalletControl", bundle: bundle)
    view = nib.instantiateWithOwner(self, options: nil)[0] as! UIView
    return view
}

override func intrinsicContentSize() -> CGSize {
//        return CGSizeMake(200, labelSuper.maxY + 10)
    let sizeOfView = viewContainerToMesherSize.systemLayoutSizeFittingSize(UILayoutFittingCompressedSize)
    return sizeOfView
}

// MARK: - Collection view

func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    // test
    return 4
}

func numberOfSectionsInCollectionView(collectionView: UICollectionView) -> Int {
    return 1
}

func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {

    let cell = collectionView.dequeueReusableCellWithReuseIdentifier("WalletCurrencyCollectionCell", forIndexPath: indexPath) as! WalletCurrencyCollectionCell

    // fill with information

    return cell
}

func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
    collectionView.deselectItemAtIndexPath(indexPath, animated: true)
}

func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAtIndexPath indexPath: NSIndexPath) -> CGSize {
    let width = collectionView.widthMy
    return CGSizeMake(width, 100)
}
}

所以我不明白为什么我在故事板中出现关于 nib 的错误，因为我注册了 nib。应用启动后一切正常。我该如何处理这个故事板错误（问题出在 UICollectionView 中，因为如果我设置单元格数 = 0 一切正常）？

Answer 1

我通过使用服务器响应计算单元格数解决了这个问题（如果没有关于钱包帐户的服务器响应，我 return 0），所以在这种情况下，故事板总是认为我有 0 个单元格，但我没有'有任何警告，当我启动应用程序时，一切仍然正常，因为我只是在 UICollectionView

中正确显示单元格

func help_getArrayOfUserCurrencyAccounts() -> [SCurrencyAccount] {
        if let currentUser = ApiManager.sharedInstance.userService_currentUser {
            return currentUser.arrayCurrencyAccounts
        }
        else {
            return [SCurrencyAccount]()
        }
    }

func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {

        let realAccountsCount = help_getArrayOfUserCurrencyAccounts().count
        if realAccountsCount > 0 {
            if realAccountsCount == 1 {
                return realAccountsCount
            }
            else {
                return realAccountsCount + 1 // so we can scroll through accounts
            }
        }
        else {
            return 0
        }
    }

自定义控件的故事板中的奇怪错误

Strange error in storyboard for custom control

ios

uicollectionview

uicollectionviewcell

swift

ibdesignable