My tableview has custom sections and cells. Every time the user scroll to the bottom it will call the server and load additional datas. My problem is how do I detect the last section so it could load more data? Each section contain 1 to 3 rows. My willDisplay wasn't working properly and the refreshControl.beginRefreshing() indicator didn't show too. Thanks!
let refreshControl = UIRefreshControl()
//MARK - Header Sections
func numberOfSections(in tableView: UITableView) -> Int {
return tableData[segmentedControlIndex].count
}
func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
return 40
}
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
let cell = tableView.dequeueReusableCell(withIdentifier: "headerCell") as! HomeSectionTableViewCell
let model = events[segmentedControlIndex][section]
cell.setup(model: model)
.
.
.
return cell.contentView
}
//MARK - Cells
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return tableData[segmentedControlIndex][section].rows.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "detailCell") as! HomeTableViewDetailCell
.
.
.
cell.detailTitleLabel?.text = tableData[segmentedControlIndex][indexPath.section].rows[indexPath.row].detailTitleLabelString
cell.detailSubtitleLabel?.text = tableData[segmentedControlIndex][indexPath.section].rows[indexPath.row].detailSubtitleLabelString
return cell
}
func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
return 0.000001
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if let cell: HomeTableViewDetailCell = tableView.cellForRow(at: indexPath) as? HomeTableViewDetailCell {
cell.detailTitleLabel?.numberOfLines = cell.detailTitleLabel?.numberOfLines == 0 ? 1 : 0
tableView.reloadData()
}
}
//MARK - TableView add more data
func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
if indexPath.section == tableView.numberOfSections - 1 {
self.refreshControl.beginRefreshing()
self.page = self.page + 1
self.getMoreData() { result in
self.refreshControl.endRefreshing()
print("Load More Bets Data reload: \(result == true ? "Success":"Failure")")
}
}
}
Related
Is there are reason why there are height differences between what is shown and what has been set as a height? also there is a space between header and prototype cell which I cannot get rid of.
extension FirstTabThirdView: UITableViewDataSource , UITableViewDelegate {
func tableView (_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 3
}
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
let view = headerView
return view
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cellOne", for: indexPath)
cell.textLabel?.text = "hello"
return cell
}
}
I add custom tableView header. My section count is 2 and the header is not displaying at section 0. But showing properly at section 1.
func numberOfSections(in tableView: UITableView) -> Int {
return arrRouteDetials.count
}
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
if section == 0 {
headerRadioBtn.tag = section
headerRadioBtn.addTarget(self, action:#selector(RdAction(_sender: )), for: .touchUpInside)
return viewTblHeader
}else{
headerRadioBtn.tag = section
headerRadioBtn.addTarget(self, action:#selector(RdAction(_sender: )), for: .touchUpInside)
return viewTblHeader
}
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return arrOfSectionRowValue[section].count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "BranchUnloadingcell", for: indexPath) as! BranchUnloadingcell
cell.lblSerialNo.text = "\(indexPath.row + 1)"
cell.val = arrOfSectionRowValue[indexPath.section][indexPath.row]
return cell
}
func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
self.viewWillLayoutSubviews()
}
func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
return 74
}
Only the first element from the array is displayed in my spacing cells.
I have no problems displaying data in simple cells without spacing, but when I need spacing cells and change my code, only the first item is displayed
let test = ["1","2","3"]
func numberOfSections(in tableView: UITableView) -> Int {
return test.count
}
func tableView(_ tableView: UITableView, numberOfRowsInSection
section: Int) -> Int {
return 1
}
func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
let cellSpacingHeight: CGFloat = 10
return cellSpacingHeight
}
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
let headerView = UIView()
headerView.backgroundColor = UIColor.clear
return headerView
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "SellerPlacesCell", for: indexPath) as! SellerPlacesCell
cell.backgroundColor = UIColor.white.withAlphaComponent(0.5)
cell.namePlace.text = test[indexPath.row]
return cell
}
How to fix it?
if in
func tableView(_ tableView: UITableView, numberOfRowsInSection
section: Int) -> Int {
return 1
}
return 1
i replace return 1 to test.count have this:
Replace
cell.namePlace.text = test[indexPath.row]
with
cell.namePlace.text = test[indexPath.section]
the spacing is for the fact that you display sections , so you need to access the array with section not row
Tableview loading invisible rows as well , cellForRowAtIndexPath getting celled for hidden rows
func numberOfSections(in tableView: UITableView) -> Int {
return ordersArray.count;
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
let selectedOrder = ordersArray[indexPath.section]
return CGFloat(180 + (30 * selectedOrder.lineItems().count ));
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 2;
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if(indexPath.row == 1)
{
let deliveryShipChargesCustomCell =
tableView.dequeueReusableCell(withIdentifier: "DeliveryShipChargesCustomCell", for: indexPath) as! DeliveryShipChargesCustomCell
return deliveryShipChargesCustomCell;
}
else
{
let orderCustomCell = tableView.dequeueReusableCell(withIdentifier: "OrdersCustomCell" , for: indexPath) as! OrdersCustomCell
return orderCustomCell;
}
}
problem with this code snippet is that it gets load row that are not even visible for example if order array count is 10. and there are two rows in each section , initially tableview (_ tableView: UITableView, cellForRowAtIndexPath: IndexPath) gets called for 20 times.
Any thoughts?
I am implementing a UITableView to populate contact name of the persons. I have implemented pretty much every thing.
I need to delete the section header title of the section whose rows have been deleted by the user and does not contain any other rows. Is there some way to do that. Simply deleting the value from title array when index.item gives me a crash. Any idea on it..
func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return sortedUniqueFirstLetters[section]
}
func numberOfSections(in tableView: UITableView) -> Int {
return sections.count
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return sections[section].count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: cellId, for: indexPath) as! TableViewCell
cell.account = sections[indexPath.section][indexPath.row]
return cell
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 80
}
func tableView(_ tableView: UITableView, willDisplayHeaderView view: UIView, forSection section: Int){
view.tintColor = UIColor.setColor(Red: 223, Green: 220, Blue: 224, Alpha: 1)
let header = view as! UITableViewHeaderFooterView
header.textLabel?.textColor = UIColor.white
}
func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool {
return true;
}
func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
if editingStyle == .delete{
***if indexPath.item == 0{ //Trying to update title array when a section is empty
sortedUniqueFirstLetters.remove(at: indexPath.section) //Index out of range error here.
}***
sections[indexPath.section].remove(at: indexPath.item)
tableView.deleteRows(at: [indexPath], with: UITableViewRowAnimation.middle);
}
}
Here is the answer :
func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
if self.tableView(tableView, numberOfRowsInSection: section) > 0 {
return sortedUniqueFirstLetters[section]
} else {
return nil
}
}
You should also use the heightForHeaderInSction as well along with your titleForHEaderInSction method. Let me know if below code works for you:
func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
let numberOfRows = tableView.numberOfRows(inSection: section)
if numberOfRows == 0 {
return ""
}else{
return sortedUniqueFirstLetters[section]
}
}
func tableView (tableView:UITableView , heightForHeaderInSection section:Int) -> Float {
let title = self.tableView(tableView, titleForHeaderInSection: section)
if (title == "") {
return 0.0
}
return 80.0
}