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- @interface MainViewController : UIViewController
- {
- @private
- UICollectionView *_collectionView;
- NSMutableArray *_results; // data source array
- }
- @end
- @interface MainViewController () <UICollectionViewDataSource, UICollectionViewDelegateFlowLayout>
- @property (nonatomic, retain) UICollectionView *collectionView;
- @property (nonatomic, retain) NSMutableArray *results;
- @end
- @implementation MainViewController
- @synthesize collectionView = _collectionView;
- @synthesize results = _results;
- - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
- {
- self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
- if (self) {
- // some init stuff - nothing to do with collection view.
- }
- return self;
- }
- - (void)loadView
- {
- self.results = [NSMutableArray array];
- UIImage *image1 = [UIImage imageNamed:@"img1.jpg"];
- UIImage *image2 = [UIImage imageNamed:@"img2.jpg"];
- [self.results addObject:image1];
- [self.results addObject:image2];
- self.collectionView.dataSource = self;
- self.collectionView.delegate = self;
- UICollectionViewFlowLayout *flowLayout = [[UICollectionViewFlowLayout alloc] init];
- UICollectionView *collectionView = [[UICollectionView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height) collectionViewLayout:flowLayout];
- self.collectionView = collectionView;
- [self.view addSubview:self.collectionView];
- [self.collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:@"Cell"];
- [self.collectionView reloadData];
- }
- - (NSInteger)collectionView:(UICollectionView *)view numberOfItemsInSection:(NSInteger)section
- {
- return [self.results count];
- }
- - (NSInteger)numberOfSectionsInCollectionView: (UICollectionView *)collectionView
- {
- return 1;
- }
- - (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
- {
- UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"Cell" forIndexPath:indexPath];
- cell.backgroundColor = [UIColor colorWithPatternImage:[self.results objectAtIndex:indexPath.row]];
- return cell;
- }
- - (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath {
- UIImage *image = [self.results objectAtIndex:indexPath.row];
- return CGSizeMake(image.size.width, image.size.height);
- }
- - (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout insetForSectionAtIndex:(NSInteger)section {
- return UIEdgeInsetsMake(50, 20, 50, 20);
- }
- self.collectionView = collectionView;
- self.collectionView.dataSource = self;
- self.collectionView.delegate = self;
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