How to NOT use dequeueReusableCellWithIdentifier? - objective-c

Question

I have a small table view, maybe 10 items max, and I do not want to use the dequeueReusableCellWithIdentifier method. The reason is, each time I'm scrolling the table view, I have the first row in place of the last row, which take few second to update back to get update back with the last row.
I'm using a prototype cell and i try to remove the :
JsonTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
but it return blank cells in table view.
So here is my code :
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *CellIdentifier = #"Cell";
JsonTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell=[[JsonTableViewCell alloc]initWithStyle:
UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
I also try to keep the
JsonTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
and configure the cell like:
if (cell == nil) {
cell.title.text = titleStrip;
}
but in this case, I've got the prototype cell as it is in the storyboard. It's not blank, but not filled with data.
Anybody can tell me what I am doing wrong?
UPDATE **** 10.10.2014 *******
Here is maybe the all code would help :
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return myObject.count;
}
(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *CellIdentifier = #"Cell";
JsonTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell=[[JsonTableViewCell alloc]initWithStyle:
UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0ul);
dispatch_async(queue, ^{
NSDictionary *tmpDict = [myObject objectAtIndex:indexPath.row];
NSMutableString *text;
text = [NSMutableString stringWithFormat:#"%#",
[tmpDict objectForKeyedSubscript:title]];
NSMutableString *detail;
detail = [NSMutableString stringWithFormat:#"%# ",
[tmpDict objectForKey:content]];
NSURL *url = [NSURL URLWithString:[tmpDict objectForKey:thumbnail]];
NSData *data = [NSData dataWithContentsOfURL:url];
UIImage *img = [[UIImage alloc]initWithData:data];
NSString *titleStrip = [[text description] stringByReplacingOccurrencesOfString:#""withString:#""];
NSString *detailStrip = [[detail description] stringByReplacingOccurrencesOfString:#""withString:#""];
dispatch_sync(dispatch_get_main_queue(), ^{
cell.titreNews.text = titleStrip;
cell.detailNews.textAlignment = NSTextAlignmentJustified;
cell.detailNews.text = detailStrip;
UIImage *image0 = [UIImage imageNamed:#"video.png"];
if (img != nil) {
cell.imageNews.image = img;
}
else {
cell.imageNews.image = image0;
}
});
});
[cell setAccessoryType:UITableViewCellAccessoryNone];
return cell;
}

Answer 1

This block of code is never called because you instantiate a cell before it (cell is never nil).
if (cell == nil) {
cell.title.text = titleStrip;
}
Don't call the dequeue methods if you aren't using them. Change your method to this:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
//Don't even try to dequeue, just create new cell instance
JsonTableViewCell *cell = [[JsonTableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
cell.title.text = titleStrip;
return cell;
}

Answer 2

First of all, welcome to Stack Overflow!
Second, I highly recommend against disabling dequeuing. Apple is famously strict when it comes to expected behaviors, and trying to re-work a basic UI element like a TableView to work in a different way could easily get your app rejected. Plus, dequeuing is a good thing, which helps keep memory usage down and streamlines things in general. It's far, far better to find a way to design your own code so it works with the dequeuing process as it is intended to work.
That being said, as I understand it all you need to do is omit the dequeueReusableCellWithIdentifier line, and it should work. cell will be nil each time, and will thus get re-initialized each time from scratch.