[iOS] Stub used for quick UICollectionView integration

iOSUICollectionViewStub

// ViewController.h

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController <UICollectionViewDelegate, UICollectionViewDataSource>

@property (weak, nonatomic) IBOutlet UICollectionView *collectionView;

@end

// ViewController.m

#import "PermissionsViewController.h"

@interface PermissionsViewController ()

@end

@implementation PermissionsViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    self.collectionView.delegate = self;
    self.collectionView.dataSource = self;

    // [self.collectionView registerNib:[UINib nibWithNibName:@"CustomCollectionViewCell" bundle:nil] forCellWithReuseIdentifier:@"CustomCollectionViewCell"];
    
    [self.collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:@"UICollectionViewCell"];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
}

#pragma mark - UICollectionView delegate methods

- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
    return 20;
}

- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
{
    return CGSizeMake(200, 200);
}

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
    UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"UICollectionViewCell" forIndexPath:indexPath];
    
    cell.backgroundColor = [UIColor whiteColor];
    
    return cell;
}

// Custom UICollectionViewCell
//- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
//{
//    CustomCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"CustomCollectionViewCell" forIndexPath:indexPath];
//    
//    cell.backgroundColor = [UIColor whiteColor];
//    
//    return cell;
//}

- (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout insetForSectionAtIndex:(NSInteger)section
{
    return UIEdgeInsetsMake(5, 5, 5, 5);
}

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

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

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
{

}

@end