Data Lost after scroll in UITableView - uitableview

Question

I am trying to display plist data in tableview.
My problem is that after scrolling down i lost my previously fetched data.
Actually i am using custom cell so i think this is happen.
Code for Source and delegate of table is below.
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [tableData count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *kCellID = #"Cell";
OffersCustomCell *cell = (OffersCustomCell *)[mytableView dequeueReusableCellWithIdentifier:kCellID];
if (cell == nil)
{
NSString *path = [[NSBundle mainBundle] pathForResource:#"OffersList" ofType:#"plist"];
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:#"OffersCustomCell" owner:self options:nil];
cell = [nib objectAtIndex:0];
cell.titleLabel.font = [UIFont fontWithName:#"Formata-Regular" size:13.0f];
cell.saveLabel.font = [UIFont fontWithName:#"Formata-Bold" size:14.0f];
cell.nowLabel.font = cell.titleLabel.font;
cell.selectionStyle = UITableViewCellSelectionStyleNone;
}
NSDictionary *dict = [tableData objectAtIndex:indexPath.row];
NSLog(#"%#",dict);
cell.titleLabel.text = [dict objectForKey:#"title"];
cell.nowLabel.text = [dict objectForKey:#"price"];
cell.saveLabel.text = [dict objectForKey:#"rondel"];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[mytableView deselectRowAtIndexPath:indexPath animated:YES];
}

Answer 1

Did you set the height for each cell
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
CGFloat height = 0;
//calculate height for each cell
return height;
}
Use this UITableView delegate method to set height of the cells.

Answer 2

you can use another class that is store your data and reload time you used that class and restore your data correctly and efficiently.

Answer 3

I solved it. :)
only problem is no retaining memory for UItableview.
tableData = [[NSArray arrayWithObjects:[dic objectForKey:#"Response"], nil] retain];