swift tableview change reloadData to insertRows - swift

Question

trying to change method to update the data, because with reloadData have lag
let oldIns = insertCounter
insertCounter += Int(INSERT_MESSAGES) // +40
var indexPaths = [IndexPath]()
for section in (oldIns..<insertCounter) {
indexPaths.append(IndexPath(row: 2, section: section))
}
tableView.beginUpdates()
tableView.insertRows(at: indexPaths, with: .automatic)
tableView.endUpdates()
but i have error
The number of sections contained in the table view after the update
(80) must be equal to the number of sections contained in the table
view before the update (40), plus or minus the number of sections
inserted or deleted (0 inserted, 0 deleted)
func numberOfSections(in tableView: UITableView) -> Int {
return min(insertCounter, Int(dbmessages.count))
}
//---------------------------------------------------------------------------------------------------------------------------------------------
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 5
}
//---------------------------------------------------------------------------------------------------------------------------------------------
func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
return RCMessages().sectionHeaderMargin
}
//---------------------------------------------------------------------------------------------------------------------------------------------
func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
return RCMessages().sectionFooterMargin
}
//---------------------------------------------------------------------------------------------------------------------------------------------
func tableView(_ tableView: UITableView, willDisplayHeaderView view: UIView, forSection section: Int) {
view.tintColor = UIColor.clear
}
//---------------------------------------------------------------------------------------------------------------------------------------------
func tableView(_ tableView: UITableView, willDisplayFooterView view: UIView, forSection section: Int) {
view.tintColor = UIColor.clear
}
//---------------------------------------------------------------------------------------------------------------------------------------------
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
if (indexPath.row == 0) {
return RCSectionHeaderCell.height(indexPath, messagesView: self)
}
if (indexPath.row == 1) {
return RCBubbleHeaderCell.height(indexPath, messagesView: self)
}
if (indexPath.row == 2) {
let rcmessage = self.rcmessage(indexPath)
if (rcmessage.type == RC_TYPE_STATUS) { return RCStatusCell.height(indexPath, messagesView: self) }
if (rcmessage.type == RC_TYPE_TEXT) { return RCTextMessageCell.height(indexPath, messagesView: self) }
}
if (indexPath.row == 3) {
return RCBubbleFooterCell.height(indexPath, messagesView: self)
}
if (indexPath.row == 4) {
return RCSectionFooterCell.height(indexPath, messagesView: self)
}
return 0
}
//---------------------------------------------------------------------------------------------------------------------------------------------
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if (indexPath.row == 0) {
let cell = tableView.dequeueReusableCell(withIdentifier: "RCSectionHeaderCell", for: indexPath) as! RCSectionHeaderCell
cell.bindData(indexPath, messagesView: self)
return cell
}
if (indexPath.row == 1) {
let cell = tableView.dequeueReusableCell(withIdentifier: "RCBubbleHeaderCell", for: indexPath) as! RCBubbleHeaderCell
cell.bindData(indexPath, messagesView: self)
return cell
}
if (indexPath.row == 2) {
let rcmessage = self.rcmessage(indexPath)
if (rcmessage.type == RC_TYPE_STATUS) {
let cell = tableView.dequeueReusableCell(withIdentifier: "RCStatusCell", for: indexPath) as! RCStatusCell
cell.bindData(indexPath, messagesView: self)
return cell
}
if (rcmessage.type == RC_TYPE_TEXT) {
let cell = tableView.dequeueReusableCell(withIdentifier: "RCTextMessageCell", for: indexPath) as! RCTextMessageCell
cell.bindData(indexPath, messagesView: self)
let numSections = self.tableView.numberOfSections
if numSections == 1 {
updateTableContentInset()
}
return cell
}
}
if (indexPath.row == 3) {
let cell = tableView.dequeueReusableCell(withIdentifier: "RCBubbleFooterCell", for: indexPath) as! RCBubbleFooterCell
cell.bindData(indexPath, messagesView: self)
return cell
}
if (indexPath.row == 4) {
let cell = tableView.dequeueReusableCell(withIdentifier: "RCSectionFooterCell", for: indexPath) as! RCSectionFooterCell
cell.bindData(indexPath, messagesView: self)
return cell
}
return UITableViewCell()
}
How can i correct insert new row in tableview?
Before does like this
insertCounter += Int(INSERT_MESSAGES)
tableView.reloadData()

Answer 1

It's a pretty simple code line:
tableView.insertRows(at: [IndexPath(row: 0, section: 0)], with: .top)
This will insert the new row at the top of the table view. Then you would reload the data. This should fix the problem.