iphone: problem reloading table data - iphone

Question

I am using custom label in table cell.everytime i visit again this page the label text getting more darker like it is behaving overwriting.
how can i fix this?
- (void)viewWillAppear:(BOOL)animated {
NSFetchRequest *request = [[NSFetchRequest alloc] init];
NSEntityDescription *entity = [NSEntityDescription entityForName:#"Note" inManagedObjectContext:context];
[request setEntity:entity];
[request release];
[self.tableView reloadData];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
}
// Set up the cell...
Note *noteItem = [resultController objectAtIndexPath:indexPath];
//[cell.textLabel setText:[noteItem noteTitle]];
//[cell.detailTextLabel setText:[dateFormatter stringFromDate:[noteItem creationDate]]];
[cell setAccessoryType:UITableViewCellAccessoryDisclosureIndicator];
cell.accessoryView=[[UIImageView alloc] initWithImage:[UIImage imageNamed:#"arrow.png"]];
UILabel *newLabel = [[UILabel alloc] initWithFrame:CGRectMake(5, 5, 200, 19)];
newLabel.text = [noteItem noteTitle];
[newLabel setBackgroundColor:[UIColor clearColor]];
[cell addSubview:newLabel];
[newLabel release];
UILabel *detailLabel = [[UILabel alloc] initWithFrame:CGRectMake(5, 20, 200, 26)];
detailLabel.text = [dateFormatter stringFromDate:[noteItem creationDate]];
[detailLabel setFont:[UIFont fontWithName:#"Helvetica" size:12.0]];
[detailLabel setBackgroundColor:[UIColor clearColor]];
[cell addSubview:detailLabel];
[detailLabel release];
[cell setBackgroundColor:[UIColor clearColor]];
[cell setAlpha:0.6];
return cell;
}

Answer 1

Create UILabel in
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
}
and Assign Its Value outside of this condition

Answer 2

your cellForRowAtIndexPath method should look like-
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
nameLabelFrame = CGRectMake(5, 5, 200, 19);
countLabelFrame = CGRectMake(5, 20, 200, 26);
UILabel *lblTemp;
lblTemp = [[UILabel alloc] initWithFrame:nameLabelFrame];
lblTemp.tag = 1;
[cell.contentView addSubview:lblTemp];
[lblTemp release];
lblTemp = [[UILabel alloc] initWithFrame:countLabelFrame];
lblTemp.tag = 2;
[cell.contentView addSubview:lblTemp];
[lblTemp release];
}
// Set up the cell...
Note *noteItem = [resultController objectAtIndexPath:indexPath];
UILabel *newLabel = (UILabel *)[cell viewWithTag:1];
newLabel.text = [noteItem noteTitle];
[newLabel setBackgroundColor:[UIColor clearColor]];
UILabel *detailLabel = (UILabel *)[cell viewWithTag:2];
detailLabel.text = [dateFormatter stringFromDate:[noteItem creationDate]];
[detailLabel setFont:[UIFont fontWithName:#"Helvetica" size:12.0]];
[detailLabel setBackgroundColor:[UIColor clearColor]];
[cell setAccessoryType:UITableViewCellAccessoryDisclosureIndicator];
cell.accessoryView=[[UIImageView alloc] initWithImage:[UIImage imageNamed:#"arrow.png"]];
[cell setBackgroundColor:[UIColor clearColor]];
[cell setAlpha:0.6];
return cell;
}

Answer 3

You should check if the cell == nil. If so, then add all the labels again, otherwise, they have already been added.