UICollectionView单元格未显示

Question

I have defined an UI for my App. There is a UICollectionView which is 100% defined in Main.StoryBoard . I have a fixed number of cells and each cell image has an image in it. I have setup the number of cell and image for each cell in Main.StoryBoard . However, when I launched the App, the UICollectionView is empty. It does not show any cell. What is wrong? Do I have to define a class for this UICollectionView ? Do I have to write any ObjectiveC Code?

Answer 1

- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
 return 5; // put your array count 
}

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
    UICollectionViewCell *cell;

    cell=[collectionView dequeueReusableCellWithReuseIdentifier:@"GIVEYOURCELL_IDENTITIFER" forIndexPath:indexPath];// same identifier storyboard cell

    UIImageView *thumbail = (UIImageView*) [cell viewWithTag:YOURCELLIMAGETAG]; // give tag here that you put in cell with imageview 

    thumbail.image = [UIImage imageNamed:@"ImageName"];// give your image here 
    return cell;
}

Main Point give UICollectionViewDataSource, UICollectionViewDelegate Delegates in your .h file and also from storyboard to your viewController.