CODEWITHSUNDEEP
iosobjective-c
Gianfranco Cotumaccio
Gianfranco Cotumaccio

Reputation: 57

How can I get the value of a label in a cell

I used a UICollectionView and I used the cells to place a label which I associate my value. When you plug the cell I want to take the text to the selected label and use it to do anything else. How can I do?

With this code, I can go back to the index exactly, but I can not take the contents of the cell and put it in a string. 

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath {
    NSString *CellIdentifier = @"Cell";
    CustomCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:CellIdentifier forIndexPath:indexPath];

    NSString *strColorCell = cell.lblCustomCell.text;
    NSLog(@"Indice della cella: %i %i %@", indexPath.item, indexPath.section * 2 + indexPath.row, strColorCell);
}

Upvotes: 2

Views: 2153

Answers (2)

Sergey Kalinichenko
Sergey Kalinichenko

Reputation: 726579

This line

CustomCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:CellIdentifier forIndexPath:indexPath];

does not give you the item that has been selected, it gives you an unused cell that has been recycled. You need to call

CustomCell *cell = [collectionView.dataSource collectionView:collectionView cellForItemAtIndexPath:indexPath];

to get the correct cell.

However, fundamentally, this is a wrong approach: you should use the indexPath to query the model for the text of the label, rather than asking the view. Take a look at the code of your collectionView:cellForItemAtIndexPath method, and find the place where you use indexPath to set the text of the label. The text comes from your model classes. You should do the same thing in your didSelectItemAtIndexPath method.

Upvotes: 5

mialkan
mialkan

Reputation: 342

assing tag value when you creating the UILabel

Then in your code you can get the label

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath {
    UICollectionViewCell *cell = [collectionView cellForItemAtIndexPath:indexPath];
    UILabel *custLabel = (UILabel*)[cell viewWithTag:labelTag];
    NSString *strColorCell = custLabel.text;
    NSLog(@"Indice della cella: %i %i %@", indexPath.item, indexPath.section * 2 + indexPath.row, strColorCell);
}

I hope this helps.

Upvotes: 1

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