Reuse error tableView with cell design programmatically - ios

Question

I have a problem with my tableView who I managed specially, i need to delete and add row really often. My cell are designed programmatically. I update my array who depend my cells and called self.tableView.reloadData() but this don't remove the cells I need and update the tableView like my array.
Cause to the reuse and my design of cell (programmatically) I need to check if the cell is always design or not. And the problem come from here.
When I called tableView.reloadData() my data are not properly reload, so I need to delete All view in the cells: indicate that the cells are not design, to design the new cell ... Of course I can just update the visible cells (with tableView.visibleCells), so this work but how can I update my other not-visible cells ?
Maybe I have an architecture problem? If so, what is the best way to delete and insert a row in the TableView with a indexPath defined? Or, how programmatically design the cell only one time?
Code:
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return user.lobbySurvey.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier:"Celll") as! CardCell
for survey in user.lobbySurvey{
let index = user.lobbySurvey.index(where: {
//get the current index is nedeed else the cells reuse lazy
$0 === survey
})
if indexPath.row == index{
var surveyState : UserSurvey.state
surveyState = survey.state
switch surveyState{
case .selectSurvey:
cell.drawCard(statutOfCard: .selectSurvey)
case .goSurvey:
cell.drawCard(statutOfCard: .goSurvey(picture: survey.picture))
case .surveyEnded:
print("survey Ended")
case .surveyWork:
print("survey in progress to vote")
case .surveyWaiting:
cell.drawCard(statutOfCard: .surveyWaiting(selfSurveyId: survey.id, timeLeft: survey.timeLeft, picture: survey.picture))
case .buyStack:
cell.drawCard(statutOfCard: .buyStack(supView : self.view))
}
}
}
cell.delegate = self
cell.delegateCard = self
cell.layer.backgroundColor = UIColor.clear.cgColor
cell.backgroundColor = .clear
tableView.backgroundColor = .clear
tableView.layer.backgroundColor = UIColor.clear.cgColor
return cell
}

Answer 1

You can have an array which is the model of your table:
NSMutableArray *model; (model can have identifier).
You can change this model whenever you want.
With this you can make your table dynamic just calling tableView.reloadData() and make whatever in cellForRow & heightForRow
- (CGFloat) tableView: (UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
CGFloat height;
YourModel *model = self.model[indexPath.row];
if ([model isKindOfClass:[SomeClassTableViewCellModel class]]) {
height = 50;
} else if([model.identifier isEqualToString:#"Whatever"]){
height = 0.0f;
else{
height = kHeightForNormalCells;
}
return height;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
YourModel *model = self.model[indexPath.row];
cell = [tableView dequeueReusableCellWithIdentifier:model.identifier forIndexPath:indexPath];
if ([cell isKindOfClass:[SomeClass class]]) {
NSLog(#"Configure Cell");
[cell setModel:model];
}
return cell;
}
Moreover, your cell should have a method setModel:
- (void)setModel:(SomeTableViewCellModel *)model {
_model = model;
self.label1.text = [NSString stringWithFormat:#"%#",model.value1];
self.label2.text = [NSString stringWithFormat:#"%#",model.value2];
}
Hope this helps you.