ios - UICollectionView Controller 和在准备 Segue 中传递 CloudKit 数据
<p><p>我已经成功地使用 CloudKit 记录中的数据和图像填充了 UICollectionViewController ，但是我在将所选单元格传递给详细信息 UIViewController 时遇到问题。到目前为止，这是我的代码 -</p>
<pre><code>override func numberOfSections(in collectionView: UICollectionView) -> Int {
return 1
}
override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return self.staffArray.count
}
override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> StaffCVCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: reuseIdentifier, for: indexPath) as! StaffCVCell
let staff: CKRecord = staffArray
let iconImage = staff.object(forKey: "staffIconImage") as? CKAsset
let iconData : NSData? = NSData(contentsOf:(iconImage?.fileURL)!)
let leaderNameCell = staff.value(forKey: "staffName") as? String
cell.leaderNameLabel?.text = leaderNameCell
cell.leaderImageView?.image = UIImage(data:iconData! as Data);
return cell
}
func prepare(for segue: UIStoryboardSegue, sender: StaffCVCell) {
if segue.identifier == "showStaffDetail" {
let destinationController = segue.destination as! StaffDetailsVC
if let indexPath = collectionView?.indexPath {
let staffLeader: CKRecord = staffArray
let staffID = staffLeader.recordID.recordName
destinationController.staffID = staffID
}
}
}
</code></pre>
<p>问题出现在线路上-</p>
<p>让 staffLeader: CKRecord = staffArray</p>
<p>我遇到错误的地方 -</p>
<blockquote>
<p>Value of type '(UICollectionViewCell) -> IndexPath?' has no member
'row'</p>
</blockquote>
<p>我尝试用单元格替换行，但这只会出现另一个错误 -</p>
<blockquote>
<p>Value of type '(UICollectionViewCell) -> IndexPath?' has no member
'cell'</p>
</blockquote>
<p>我确信我缺少一些基本的东西，但看不到它。任何指针都非常感谢。</p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>如果你的 segue 是通过触摸一个单元格来触发的，你需要下面的代码行:</p>
<pre><code>override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "showStaffDetail" {
let destinationController = segue.destination as! StaffDetailsVC
// Find the correct indexPath for the cell that triggered the segue
// And check that the sender is, in fact, a StaffCVCell
if let indexPath = collectionView?.indexPath(for: sender), let sender = sender as? StaffCVCell {
// Get your CKRecord information
let staffLeader: CKRecord = staffArray
let staffID = staffLeader.recordID.recordName
// Set any properties needed on your destination view controller
destinationController.staffID = staffID
}
}
}
</code></pre>
<p>请注意，我已将方法签名改回标准方法签名。</p></p>
<p style="font-size: 20px;">关于ios - UICollectionViewController 和在准备 Segue 中传递 CloudKit 数据，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/42815072/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/42815072/
</a>
</p>
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