dequeueReusableCellWithIdentifier with cells of different size - ios

Question

STEP 1 - this is working fine
I have UITableView that loads custom UITableViewCells
STEP 2 - this is kinda works
I change the UITableViewCell height so that all the data contained in the cell within a UITextView is visible
I manage to get the UItextView data and resize it by using the following code:
UITextView *dummy = [[UITextView alloc] init];
dummy.font = [UIFont systemFontOfSize:14];
dummy.text = cell.textView.text;
CGSize newSize = [dummy sizeThatFits:CGSizeMake(270.0f, 500.0f)];
//get the textView frame and change it's size
CGRect newFrame = cell.textView.frame;
newFrame.size = CGSizeMake(270.0f, fmaxf(newSize.height, 60));
cell.textView.frame = newFrame;
//resize the cell view I add +95 because my cell has borders and other stuff...
CGRect cellFrame = CGRectMake(0, 0, 320, newFrame.size.height+95);
cell.cellView.frame = cellFrame;
I then manage to set the UITableViewCell height using the delegate function heightForRowAtIndexPath:
Now when I run the code and scroll up and down the table cells the behavious isn't always as expected... i.e the cell size isn't always the right size, but if I scroll up and down it sometimes loads up the right size again.
I am thinking that perhaps the dequeueReusableCellWithIdentifier is the issue
cellIdentifier = #"tableCell";
ctTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier forIndexPath:indexPath];
Since I am recycling cells of different size with the same identifier...
Can anybody give me some guidelines on how best to solve this issue?
Thanks!!!

Answer 1

I would start by adding UITextView dynamically inside cellForRowAtIndexPath method. assumptions(data array contains the content to be displayed inside cell)
// Defines
#define CELL_TEXTVIEW_WIDTH = 320
#define CELL_TEXTVIEW_HEIGHT = 9999
#define PADDING = 5
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"tableCell";
ctTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier forIndexPath:indexPath];
if(cell == nil){
cell = [[tableView alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
NSString *_data = [data objectAtIndex:indexPath.row];
CGSize _data_contentsize = [_data sizeWithFont:[UIFont systemFontOfSize:14] constrainedToSize:CGSizeMake(CELL_TEXTVIEW_WIDTH, CELL_TEXTVIEW_HEIGHT) lineBreakMode:NSLineBreakModeWordWrap];
UITextView *dummy=[[UITextView alloc] initWithFrame:CGRectMake(5, 5, 290, _data_contentsize +(PADDING * 2))];
// add Font and text color for your textview here
[cell.contentView addSubview:dummy];
return cell;
}
After this calculate the height of the cell under heightForRowAtIndexPath method.

Answer 2

have you implemented following method ?
(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
https://developer.apple.com/library/ios/documentation/uikit/reference/UITableViewDelegate_Protocol/Reference/Reference.html#//apple_ref/occ/intfm/UITableViewDelegate/tableView:heightForRowAtIndexPath:
you should set height for each row , if they are different from each other