Collection View

Collection View

1 )  First set CollectionView in Your Storyboard ...

2 )  Write Coding in ViewController.h File...

@interface ViewController : UIViewController<UICollectionViewDataSource,UICollectionViewDelegate>

{

    __weak IBOutlet UICollectionView *objCollectionView;

    

}

@end

3 )  Write Coding in ViewController.m File...

@implementation ViewController

- (void)viewDidLoad

{

    [super viewDidLoad];

    

    [objCollectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:@"Cell"];

    [objCollectionView setAllowsMultipleSelection:YES];

 

}

- (void)didReceiveMemoryWarning

{

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section

{

    return 60;

}

- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView

{

    return 1;

}

- (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView viewForSupplementaryElementOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath

{

    

    UICollectionReusableView *reusableview = nil;

    

    return reusableview;

}

- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath

{

    return CGSizeMake(72, 72);

}

// The cell that is returned must be retrieved from a call to -dequeueReusableCellWithReuseIdentifier:forIndexPath:

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath

{

    static NSString *identifier=@"Cell";

    

    UICollectionViewCell *objCollection=(UICollectionViewCell *)[collectionView dequeueReusableCellWithReuseIdentifier:identifier forIndexPath:indexPath];

    

    objCollection.backgroundView=[[UIImageView alloc] initWithImage:[UIImage imageNamed:[NSString stringWithFormat:@"%d.png", [indexPath row] % 16]]];

    

    return objCollection;

    

}

- (void) selectCellForCollectionView:(UICollectionView *)collection atIndexPath:(NSIndexPath *)indexPath

{

    [collection selectItemAtIndexPath:indexPath animated:YES scrollPosition:UICollectionViewScrollPositionNone];

    [self collectionView:collection didSelectItemAtIndexPath:indexPath];

}

- (void) deselectCellForCollectionView:(UICollectionView *)collection atIndexPath:(NSIndexPath *)indexPath

{

    [collection deselectItemAtIndexPath:indexPath animated:YES];

    [self collectionView:collection didDeselectItemAtIndexPath:indexPath];

}

@end