在滚动视图内部的视图中，我有一个具有两个集合视图和两个视图控制器的视图控制器，以查看尚未添加的其他视图。我所有这些对象都在滚动视图之外，当我添加滚动视图并插入对象时，我得到了代码：
线程1：“ ***-[__ NSArrayM objectAtIndexedSubscript：]：索引1超出 界限[0 .. 0]“
启动应用程序时。我能够运行该应用程序，并且在完成启动屏幕的加载后，它会崩溃。
代码如下：
import UIKit
class HomeViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate, UICollectionViewDelegateFlowLayout {
@IBOutlet weak var t10MacInfCollectionView: UICollectionView!
@IBOutlet weak var t10MicroInfCollectionView: UICollectionView!
let T10Mac = "T10Mac"
let T10Mic = "T10Mic"
override func viewDidLoad() {
super.viewDidLoad()
t10MacInfCollectionView.reloadData()
t10MicroInfCollectionView.reloadData()
t10MacInfCollectionView.delegate = self
t10MicroInfCollectionView.delegate = self
t10MacInfCollectionView.dataSource = self
t10MicroInfCollectionView.dataSource = self
self.view.addSubview(t10MacInfCollectionView)
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
if collectionView == self.t10MacInfCollectionView {
return 10
}
return 10
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
if collectionView == self.t10MacInfCollectionView {
let cellA = collectionView.dequeueReusableCell(withReuseIdentifier: T10Mac , for: indexPath) as! T10MacroCollectionViewCell
return cellA
}
else {
let cellB = collectionView.dequeueReusableCell(withReuseIdentifier: T10Mic , for: indexPath) as! T10MicroCollectionViewCell
return cellB
}
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
if collectionView == self.t10MacInfCollectionView {
let cellA = collectionView.dequeueReusableCell(withReuseIdentifier: T10Mac, for: indexPath)
return CGSize(width: 125.0, height: 225.0)
}
else {
let cellB = collectionView.dequeueReusableCell(withReuseIdentifier: T10Mic, for: indexPath)
return CGSize(width: 125.0, height: 225.0)
}
}
}
如果还有其他需要查看的代码，请告诉我。我不明白为什么会收到此错误。
编辑：这是我的异常断点在说什么：
[CollectionView] An attempt to update layout information was detected while already in the process of computing the layout (i.e. reentrant call). This will result in unexpected behaviour or a crash. This may happen if a layout pass is triggered while calling out to a delegate. UICollectionViewFlowLayout instance is (<UICollectionViewFlowLayout: 0x7f986fc357c0>)