CODEWITHSUNDEEP
iosiphoneuicollectionview
Nisha
Nisha

Reputation: 354

UICollectionview set cell height based on image height

Hii i want set height of UICollectionView cell based on image i get from url. can any one help me? i have checked some libraries in that they have given random height to cell. In this one random height given to cell. when i try to give image height like this it is giving result. space is coming between cells.

and also tried like this but not working space is coming between cell rows. see this

Upvotes: 2

Views: 2097

Answers (2)

Illya Krit
Illya Krit

Reputation: 945

You can set the height as variable 

 func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAtIndexPath indexPath: NSIndexPath) -> CGSize {
             return CGSize(width: 100, height: myHeight)
        } 
}

If your image is downloaded, call: MyCollectionView.collectionViewLayout.invalidateLayout()

The question is old, but still actual

Upvotes: 0

Tanvi Jain
Tanvi Jain

Reputation: 937

    Write in ViewDidLoad Method

    for (int i=0; i<[imageURLArray count]; i++)
        {
             //Declare Globally
            IMGArray1=[[NSMutableArray alloc] init];

            NSURLRequest *urlRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:[imageURLArray objectAtIndex:i]]];
            NSOperationQueue *urlQue = [[NSOperationQueue alloc] init];
            [NSURLConnection sendAsynchronousRequest:urlRequest queue:urlQue completionHandler:^(NSURLResponse *response,
                                                                                                 NSData *MoblieDatadata, NSError *error)
             {
                 if ([MoblieDatadata length] >0 && error == nil)
                 {
                     UIImage *image = [[UIImage alloc]initWithData:MoblieDatadata];
                     [IMGArray1 addObject:image];

                 }
                 else if ([MoblieDatadata length] == 0 && error == nil)
                 {

                     NSLog(@"Nothing was downloaded.");



                 }
                 else if (error != nil)
                 {
                     NSLog(@"Error happened = %@", error);
                     dispatch_async(dispatch_get_main_queue(), ^{


                     });
                 }
             }];


    -(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView
                     cellForItemAtIndexPath:(NSIndexPath *)indexPath
    {
        examplemycell *myCell = [collectionView
                                        dequeueReusableCellWithReuseIdentifier:@"cell"
                                        forIndexPath:indexPath];

        UIImage *image;
        int row = [indexPath row];

        image = [UIImage imageNamed:IMGArray1[row]];

        myCell.imageView.image = image;

        return myCell;
    }
    #pragma mark -
    #pragma mark UICollectionViewFlowLayoutDelegate

    -(CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
    {
        UIImage *image;
        int row = [indexPath row];

        image = [UIImage imageNamed:IMGArray1[row]];

        return image.size;
    }

//For setting spacing between collectionview cells
//use the delegate method like

- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionView *)collectionViewLayout minimumInteritemSpacingForSectionAtIndex:(NSInteger)section  
  {
    return 10; // This is the minimum inter item spacing, can be more
  }

And Use this for verticle line spacing between cells

- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section
{
    return 5;
}

Upvotes: 1

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