在viewController中使用不同數目的單元格的多個集合視圖

Question

似乎有類似的問題here但它並沒有解決我的問題。

我創造了我的viewController 2個collectionViews如下：

let y = self.view.frame.height 
titleView = UIView(frame : CGRect(x: 0 , y: 50 , width: self.view.frame.width, height: y - 100)) 

let middle = CGPoint(x: 10, y: titleView.bounds.height/10) 
let frame = CGRect(origin: middle , size: CGSize(width: self.view.frame.width - 20 , height: 70)) 
let layout = UICollectionViewFlowLayout() 
fontCollection = UICollectionView(frame: frame, collectionViewLayout: layout) 
fontCollection.dataSource = self 
fontCollection.delegate = self 
fontCollection.register(UICollectionViewCell.self, forCellWithReuseIdentifier: "fontsIdentifier") 
fontCollection.backgroundColor = UIColor.white 
// Do any additional setup after 

colorCollection = UICollectionView(frame: frame, collectionViewLayout: layout) 
//colorCollection.frame.origin.y = fontCollection.frame.origin.y + (2 * fontCollection.frame.height) 
colorCollection.dataSource = self 
colorCollection.delegate = self 
colorCollection.register(UICollectionViewCell.self, forCellWithReuseIdentifier: "colorsIdentifier") 
colorCollection.backgroundColor = UIColor.white 
// Do any additional setup after 

這些都是我UICollectionViewDataSource方法：

func numberOfSections(in collectionView: UICollectionView) -> Int { 
    collectionView.reloadData() 
    collectionView.collectionViewLayout.invalidateLayout() 
    return 1 
} 

public func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell { 
    if(collectionView == self.colorCollection){ 
     let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "colorsIdentifier", for: indexPath) 
     cell.backgroundColor = .darkGray 
     return cell 
    } else { 
     let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "fontsIdentifier", for: indexPath) 
     cell.backgroundColor = .gray 
     return cell 
    } 
} 

然後我用一個segmented control兩個collectionViews之間切換。 一切按所需的高達這個point.However時，我想分配不同數量的細胞要麼collectionView的我得到這個錯誤：

UICollectionView收到與不存在的索引 路徑的單元佈局屬性： {長度= 2，路徑= 0 - 6}

這是我的numberOfItemsInSection方法

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

    if(collectionView == self.colorCollection){ return 9 } 
    else if(collectionView == self.fontCollection){ return 6 } 

    return 0 
} 

我做錯了什麼？我錯過了什麼？

Answer 1

正如@ Rajesh73在評論中指出的，問題在於將一個佈局分配給collectionViews。所以我給了這兩個collectionViews不同的佈局，並解決了這個問題。

因此與

let fontsLayout =  UICollectionViewFlowLayout() 
    fontCollection =  UICollectionView(frame: frame,collectionViewLayout: fontsLayout) 
    let colorsLayout =  UICollectionViewFlowLayout() 
colorsCollection =  UICollectionView(frame: frame collectionViewLayout: colorsLayout) 

更換

let layout =    UICollectionViewFlowLayout() 
    fontCollection =   UICollectionView(frame: frame, collectionViewLayout: layout) 
    colorCollection =  UICollectionView(frame: frame, collectionViewLayout: layout) 

解決的問題。