Display multiple custom cells in a UITableView? - objective-c

Question

I am using Xcode 4.2 on SnowLeopard, and my project is using storyboards. I am trying to implement a UITableView with 2 different custom cell types, sessionCelland infoCell. I can get the 2 types to appear within the same list, but now I have a new problem?! The sessionCell is displayed once, and then X number of infoCells are displayed after it - just as I wanted - except that the first infoCell is always overwritten by the sessionCell!
- (NSInteger)tableView:(UITableView *)tableView
numberOfRowsInSection:(NSInteger)section
{
return [self.people count];
}
//inside cellForRowAtIndexPath
if(indexPath.row == 0) {
cell = [tableView dequeueReusableCellWithIdentifier:#"sessionCell"];
} else {
cell = [tableView dequeueReusableCellWithIdentifier:#"infoCell"];
}
...
return cell;
I've tried to say return array count + 1, or even hardcoded return 7 (it fits my example) but both are incorrect!
myObject *person = [self.people objectAtIndex:indexPath.row];
Or does my problem lie in the above line? I've even tried indexPath.row+1...
Any help would be greatly appreciated!!

Answer 1

If I understand your question correctly, the first infoCell (second UITableView row) should display the first person object's data, right?
Then it seems you want:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *sessionCellID = #"sessionID";
static NSString *infoCellID = #"infoID";
if( indexPath.row == 0 ) {
SessionCellClass *cell = nil;
cell = (SessionCellClass *)[tableView dequeueReusableCellWithIdentifier:sessionCellID];
if( !cell ) {
// do something to create a new instance of cell
// either alloc/initWithStyle or load via UINib
}
// populate the cell with session model
return cell;
}
else {
InfoCellClass *cell = nil;
cell = (InfoCellClass *)[tableView dequeueReusableCellWithIdentifier:infoCellID];
if( !cell ) {
// do something to create a new instance of info cell
// either alloc/initWithStyle or load via UINib
// ...
// get the model object:
myObject *person = [[self people] objectAtIndex:indexPath.row - 1];
// populate the cell with that model object
// ...
return cell;
}
}
and you need to return [[self people] count] + 1 for the row count:
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [[self people] count] + 1;
}
so that the n'th row shows the (n-1)th data.

Answer 2

if you look at the if else section it shows that the first row is an "sessionCell" and all other rows are "infoCells" what i think you want to do is make the first row an sessionCell, the second row an infoCell and all of the other rows peopleCells
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [self.people count] + 2; // Added two for sessionCell & infoCell
}
//inside cellForRowAtIndexPath
if(indexPath.row == 0) {
cell = [tableView dequeueReusableCellWithIdentifier:#"sessionCell"];
} else if (indexPath.row == 1 {
cell = [tableView dequeueReusableCellWithIdentifier:#"infoCell"];
} else {
cell = [tableView dequeueReusableCellWithIdentifier:#"personCell"];
Person *person = [self.people objectAtIndex:index.path.row - 2];
}
...
return cell;
Better yet, I would try to make two different sell sections, one for info and one for people
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 2;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return section == 0 ? 2 : self.people.count
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell = nil;
if (indexPath.section == 0) {
if(indexPath.row == 0) {
cell = [tableView dequeueReusableCellWithIdentifier:#"sessionCell"];
// configure session cell
} else if (indexPath.row == 1 {
cell = [tableView dequeueReusableCellWithIdentifier:#"infoCell"];
// configure info cell
}
} else {
cell = [tableView dequeueReusableCellWithIdentifier:#"infoCell"];
Person *person = [self.people objectAtIndexPath:indexPath.row];
// configure person cell
}
return cell;
}