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POUICollectionView and Custom Height
 

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  1. POUICollectionView and Custom Height
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    <p>i'm using a uiviewcontroller with inside a uicollectionvieww, and i searched on internet how i can customize the height of my total uicollectionview. For now i setup the uicollectionview with a height >= 1 (i'm using autolayout) Then in my .m file i tried with:</p> <pre><code>UICollectionViewFlowLayout *flowLayout = [[UICollectionViewFlowLayout alloc] init]; [flowLayout setItemSize:CGSizeMake(160, 160)]; [flowLayout setScrollDirection:UICollectionViewScrollDirectionVertical]; [flowLayout setMinimumInteritemSpacing:0]; [flowLayout setMinimumLineSpacing:0]; NSInteger itemCount = [self.collectionView numberOfItemsInSection:0]; [flowLayout setItemSize:CGSizeMake(self.collectionView.frame.size.width, 160 * itemCount)]; [self.collectionView setCollectionViewLayout:flowLayout]; NSLog(@"%f", self.collectionView.frame.size.height); </code></pre> <p>But in NSLog still show me the height to 1...how i can do for setup the height of my uicollectionview to a custom height(that is based on element in a section * 160). Any suggest ? Thanks.</p> <p><strong>EDIT:</strong> Where i create the cells:</p> <pre><code>-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath { GalleryCell *cell = (GalleryCell *)[collectionView dequeueReusableCellWithReuseIdentifier:@"GalleryCell" forIndexPath:indexPath]; NSDictionary *photo = [self.beachImages objectAtIndex:indexPath.row]; [cell.imageView setImageWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@", [photo objectForKey:@"original_url"]]] placeholderImage:[UIImage imageNamed:@"avatar-placeholder.png"]]; return cell; } </code></pre> <p><strong>EDIT:</strong> Maybe the problem is that i use autolayout ? Here my constraints: <a href="http://cl.ly/image/2l0M432w0U1V" rel="nofollow">http://cl.ly/image/2l0M432w0U1V</a> <strong>EDIT:</strong> I tried with adding constraint by code:</p> <pre><code>[self.collectionView removeConstraints:self.collectionView.constraints]; NSLayoutConstraint *con1 = [NSLayoutConstraint constraintWithItem:self.collectionView attribute:NSLayoutAttributeHeight relatedBy:0 toItem:nil attribute:NSLayoutAttributeNotAnAttribute multiplier:1 constant:320]; [self.collectionView addConstraints:@[con1]]; </code></pre> <p>But not show my cells...</p>
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    1. PTQuestion
    1. USChristopher Pickslay
    1. USRiccardo Rossi
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      1. POUICollectionView and Custom Height
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      1. VTUpMod
    2. VO
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    1. COYou never change the height of the `collectionView`. You just change the layout.
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      1. POUICollectionView and Custom Height
      1. USJustin Paulson
    2. COI can change how ?
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      1. USRiccardo Rossi
    3. COcollectionView.frame
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      1. POUICollectionView and Custom Height
      1. USPatrick Tescher
 

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