Hide a label of a cell in a table view in iOS - ios

Question

I want to hide a label of a cell in a tableview.
(void)handleSwipeRight:(UISwipeGestureRecognizer *)gestureRecognizer
{
//Get location of the swipe
CGPoint location = [gestureRecognizer locationInView:self.tableView];
//Get the corresponding index path within the table view
NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint:location];
//Check if index path is valid
if(indexPath)
{
//Get the cell out of the table view
UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:indexPath];
//Update the cell or model
displayLabel.hidden = TRUE;
[cell setNeedsDisplay];
}
}
This code is hiding the label in the last cell as I failed to specify the code to hide the swiped cell's label.
Help to specify the swiped cell label to hide.
displayLabel.hidden = TRUE;
I need a replacement for this code.

Answer 1

You can try below code its working perfectly on my side:
- (void)viewDidLoad
{
UISwipeGestureRecognizer *recog = [[UISwipeGestureRecognizer alloc]initWithTarget:self
action:#selector(handleSwipeRight:)];
recog.delegate = self;
[recog setDirection:UISwipeGestureRecognizerDirectionRight];
[testTable addGestureRecognizer:recog];
// add the swipe gesture recognizer to tableview;
[super viewDidLoad];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return 7;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath
*)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:CellIdentifier] autorelease];
UILabel *aLabel = [[[UILabel alloc]init]autorelease];
aLabel.frame = CGRectMake(5, 0, 100, 40);
aLabel.text = [NSString stringWithFormat:#"aLabel %d",indexPath.row+1];
aLabel.tag = 1;//tag the labels
[cell.contentView addSubview:aLabel];
UILabel *bLabel = [[[UILabel alloc]init]autorelease];
bLabel.frame = CGRectMake(110, 0, 100, 40);
bLabel.text = [NSString stringWithFormat:#"bLabel %d",indexPath.row+1];
bLabel.tag = 2;//tag the label
[cell.contentView addSubview:bLabel];
UILabel *cLabel = [[[UILabel alloc]init]autorelease];
cLabel.frame = CGRectMake(215, 0, 100, 40);
cLabel.text = [NSString stringWithFormat:#"cLabel %d",indexPath.row+1];
cLabel.tag = 3;//tag the label
[cell.contentView addSubview:cLabel];
}
return cell;
}
-(void)handleSwipeRight:(UISwipeGestureRecognizer *)gestureRecognizer
{
//Get location of the swipe
CGPoint location = [gestureRecognizer locationInView:testTable];
//Get the corresponding index path within the table view
NSIndexPath *indexPath = [testTable indexPathForRowAtPoint:location];
//Check if index path is valid
if(indexPath)
{
//Get the cell out of the table view
UITableViewCell *cell = [testTable cellForRowAtIndexPath:indexPath];
for (id label in cell.contentView.subviews)
{
if ([label isMemberOfClass:[UILabel class]])
{
UILabel *referedLabel = (UILabel*)label;
if (referedLabel.tag == 2) //tag of bLabel;
{
referedLabel.hidden = YES;
}
}
}
}
}

Answer 2

I think displayLabel is pointing to label in last cell of your table. Where you are setting value to displayLabel.
UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:indexPath];
//Update the cell or model
//You should get label from cell here. Currently displayLabel may be pointing to label in last cell, if I am correct you are assigning value to displaylabel in cellForRowAtIndexPath or in any other method.
displayLabel.hidden = TRUE;
[cell setNeedsDisplay];

Answer 3

Change your method to this:
-(void)handleSwipeRight:(UISwipeGestureRecognizer *)gestureRecognizer
{
//Get location of the swipe
CGPoint location = [gestureRecognizer locationInView:self.tableView];
//Get the corresponding index path within the table view
NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint:location];
//Check if index path is valid
if(indexPath)
{
// If you created a custom cell with a
// displayLabel property, change the pointer
// type from UITableViewCell to that type
UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:indexPath];
cell.displayLabel.hidden = YES;
// Use the following three lines instead, if your cell style is "Subtitle"
// cell.textLabel.hidden = YES;
// cell.imageView.hidden = YES;
// cell.detailTextLabel.hidden = YES;
[cell setNeedsDisplay];
}
}