如何设置段控件以更改 table 视图单元格中的集合单元格项?
How to set a segment control to change collection cell item in table view cell?
我在 table 视图单元格中创建了一个集合视图,并在 table 视图的导航栏上添加了一个段控件。当段出口和操作在 table 视图控制器上时,如何更改收集单元格项目?
我在 table 视图控制器上试过这个但是得到这个错误:
当集合视图中只有 1 个部分时,请求第 2147483647 部分之前的项目数
@IBAction func mySegAction(_ sender: UISegmentedControl) {
switch mySeg.selectedSegmentIndex
{
case 0:
print("0")
case 1:
print("1")
let indexPath = IndexPath()
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionViewCell", for: indexPath) as! CategoryCollectionViewCell
cell.cateLabel.text! = nameArray2[indexPath.row]
default:
break;
}
}
Table 查看单元控制器:
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionViewCell", for: indexPath) as! CategoryCollectionViewCell
cell.cateLabel.text! = nameArray[indexPath.row]
// I tried this code but fail
if AddViewController().mySeg?.selectedSegmentIndex == 1 {
cell.cateLabel.text! = nameArray2[indexPath.row]
}
return cell
}
我想在 Segment
更改后将 cateLabel.text! = nameArray[indexPath.row]
更改为 nameArray2[indexPath.row]
,如何操作?
在 Action 上调用 tableView.reloadData()
并在 cellForRowAt
上调用 collectionView.reloadData()
@IBAction func mySegAction(_ sender: UISegmentedControl) {
switch mySeg.selectedSegmentIndex{
case 0:
segment = 0
UserDefaults.standard.setValue(segment, forKey:"segment")
UserDefaults.standard.synchronize()
case 1:
segment = 1
UserDefaults.standard.setValue(segment, forKey:"segment")
UserDefaults.standard.synchronize()
default:
break;
}
self.tableView.reloadData()
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if indexPath.row == 1{
let cell1 = tableView.dequeueReusableCell(withIdentifier: "AddViewCell2", for: indexPath)
return cell1
}else if indexPath.row == 2{
let cell2 = tableView.dequeueReusableCell(withIdentifier: "AddViewCell3", for: indexPath)
return cell2
}else if indexPath.row == 3{
let cell3 = tableView.dequeueReusableCell(withIdentifier: "AddViewCell4", for: indexPath)
return cell3
}else if indexPath.row == 4{
switch segment {
case 0:
let cell4 = tableView.dequeueReusableCell(withIdentifier: "AddViewCell5", for: indexPath) as! AddViewCell
cell4.collectionView.reloadData()
return cell4
case 1:
let cell4 = tableView.dequeueReusableCell(withIdentifier: "AddViewCell5", for: indexPath) as! AddViewCell
cell4.collectionView.reloadData()
return cell4
default:
break
}
}
let cell = tableView.dequeueReusableCell(withIdentifier: "AddViewCell1", for: indexPath)
return cell
}
在 table 视图单元格上 class:
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionViewCell", for: indexPath) as! CategoryCollectionViewCell
let segment = UserDefaults().value(forKey: "segment") as! Int
//print("segment here")
//print(segment)
switch segment {
case 0:
cell.cateLabel.text! = nameArray[indexPath.row]
cell.cateImg.image = imageName[indexPath.row]
case 1:
cell.cateLabel.text! = nameArray2[indexPath.row]
cell.cateImg.image = imageName[indexPath.row]
default:
break;
}
return cell
}
我在 table 视图单元格中创建了一个集合视图,并在 table 视图的导航栏上添加了一个段控件。当段出口和操作在 table 视图控制器上时,如何更改收集单元格项目?
我在 table 视图控制器上试过这个但是得到这个错误: 当集合视图中只有 1 个部分时,请求第 2147483647 部分之前的项目数
@IBAction func mySegAction(_ sender: UISegmentedControl) {
switch mySeg.selectedSegmentIndex
{
case 0:
print("0")
case 1:
print("1")
let indexPath = IndexPath()
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionViewCell", for: indexPath) as! CategoryCollectionViewCell
cell.cateLabel.text! = nameArray2[indexPath.row]
default:
break;
}
}
Table 查看单元控制器:
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionViewCell", for: indexPath) as! CategoryCollectionViewCell
cell.cateLabel.text! = nameArray[indexPath.row]
// I tried this code but fail
if AddViewController().mySeg?.selectedSegmentIndex == 1 {
cell.cateLabel.text! = nameArray2[indexPath.row]
}
return cell
}
我想在 Segment
更改后将 cateLabel.text! = nameArray[indexPath.row]
更改为 nameArray2[indexPath.row]
,如何操作?
在 Action 上调用 tableView.reloadData()
并在 cellForRowAt
collectionView.reloadData()
@IBAction func mySegAction(_ sender: UISegmentedControl) {
switch mySeg.selectedSegmentIndex{
case 0:
segment = 0
UserDefaults.standard.setValue(segment, forKey:"segment")
UserDefaults.standard.synchronize()
case 1:
segment = 1
UserDefaults.standard.setValue(segment, forKey:"segment")
UserDefaults.standard.synchronize()
default:
break;
}
self.tableView.reloadData()
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if indexPath.row == 1{
let cell1 = tableView.dequeueReusableCell(withIdentifier: "AddViewCell2", for: indexPath)
return cell1
}else if indexPath.row == 2{
let cell2 = tableView.dequeueReusableCell(withIdentifier: "AddViewCell3", for: indexPath)
return cell2
}else if indexPath.row == 3{
let cell3 = tableView.dequeueReusableCell(withIdentifier: "AddViewCell4", for: indexPath)
return cell3
}else if indexPath.row == 4{
switch segment {
case 0:
let cell4 = tableView.dequeueReusableCell(withIdentifier: "AddViewCell5", for: indexPath) as! AddViewCell
cell4.collectionView.reloadData()
return cell4
case 1:
let cell4 = tableView.dequeueReusableCell(withIdentifier: "AddViewCell5", for: indexPath) as! AddViewCell
cell4.collectionView.reloadData()
return cell4
default:
break
}
}
let cell = tableView.dequeueReusableCell(withIdentifier: "AddViewCell1", for: indexPath)
return cell
}
在 table 视图单元格上 class:
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionViewCell", for: indexPath) as! CategoryCollectionViewCell
let segment = UserDefaults().value(forKey: "segment") as! Int
//print("segment here")
//print(segment)
switch segment {
case 0:
cell.cateLabel.text! = nameArray[indexPath.row]
cell.cateImg.image = imageName[indexPath.row]
case 1:
cell.cateLabel.text! = nameArray2[indexPath.row]
cell.cateImg.image = imageName[indexPath.row]
default:
break;
}
return cell
}