UICollectionView由Cell中的UIImagePickerControl按钮填充

Question

我有一个UICollectionView，它由一个Cell中的UIImagePickerControl按钮填充，我希望带有按钮的单元格显示整个时间，但我似乎无法显示它。 这是我的代码：

-(NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView
{
return 1;
}

-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
return [self.project.screens count];
}

 -(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
    if (indexPath.row == 1) {



    Screen* screen = [self.project.screens objectAtIndex:indexPath.row];
    static NSString* cellIdentifier = @"ImageCell";
    CollectionViewCell *cell =[collectionView dequeueReusableCellWithReuseIdentifier:cellIdentifier forIndexPath:indexPath];
    cell.screen = screen;
    cell.delegate = self;
    return cell;
    }else{

    static NSString* cellIdentifier = @"ButtonCell";
    CollectionViewCell *cell =[collectionView dequeueReusableCellWithReuseIdentifier:cellIdentifier forIndexPath:indexPath];
    cell.delegate =self;
    return cell;
    }
}

我的if语句中的代码应该是什么，以及如何将+1添加到

return [self.project.screens count];          

Answer 1

你几乎就在那里，

-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
//Number of elements + 1 for the button
return [self.project.screens count]+1;
}

并在

-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
if (indexPath.row == 1) {

Screen* screen = [self.project.screens objectAtIndex:indexPath.row];
static NSString* cellIdentifier = @"ImageCell";
CollectionViewCell *cell =[collectionView dequeueReusableCellWithReuseIdentifier:cellIdentifier forIndexPath:indexPath];
cell.screen = screen;
cell.delegate = self;
return cell;
}else{

static NSString* buttonCellIdentifier = @"ButtonCell";
CollectionViewCell *cell =[collectionView dequeueReusableCellWithReuseIdentifier:buttonCellIdentifier forIndexPath:indexPath];
cell.delegate =self;
return cell;
}
}