我有一些用于collectionView的代码
这是代码
func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView {
guard kind == UICollectionElementKindSectionHeader else {
return UICollectionReusableView()
}
let view = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: "Section", for: indexPath) as! section
if searchActive == true {
view.textLabel.text == ""
//reload data inside cellForItemAt indexPath: IndexPath
} else {
//header section
view.textLabel.text = categoryList[indexPath.section]
//reload data inside cellForItemAt indexPath: IndexPath
}
return view
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
//row section
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "Cell", for: indexPath) as! CollectionCell
let cellHeader = collectionView.dequeueReusableCell(withReuseIdentifier: "Section", for: indexPath) as! section
print (cellHeader.textLabel.text)
if searchActive == true {
_ = kingdomListArray.filter { (dic) -> Bool in
if filteredTableData[indexPath.row] == dic.sub_Category_Data {
cell.textLabel.text = dic.sub_Category_Data
}
return true
}
return cell
} else {
_ = kingdomListArray.filter { (dic) -> Bool in
if subCategoryList[indexPath.row] == dic.sub_Category_Data {
cell.textLabel?.text = dic.sub_Category_Data
}
return true
}
return cell
}
}
在此代码中，func collectionView(viewForSupplementaryElementOfKind)用于显示collection view内部的节标题，而问题是，func collectionView(viewForSupplementaryElementOfKind)将在func collectionView(cellForItemAt indexPath: IndexPath)之后运行
我想检测func collectionView(viewForSupplementaryElementOfKind中标头中的名称，然后为func collectionView(cellForItemAt indexPath: IndexPath)中每个标头名称过滤每个数据。
如何首先运行func collectionView(viewForSupplementaryElementOfKind)