常用方法

添加協(xié)議 <UICollectionViewDelegate,UICollectionViewDataSource,UICollectionViewDelegateFlowLayout>

#pragma mark - 懶加載
- (UICollectionView *)collectionView {
    if (_collectionView == nil) {
        UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc] init];
        layout.scrollDirection = UICollectionViewScrollDirectionVertical;
        layout.itemSize = CGSizeMake(Main_Screen_Width * 0.5 , 190 * kScreenHeightRatio);
        _collectionView = [[UICollectionView alloc] initWithFrame:CGRectMake(0, Navi_Height + 50, Main_Screen_Width , Main_Screen_Height - Navi_Height - 50) collectionViewLayout:layout];
        _collectionView.backgroundColor = [UIColor colorWithHexString:@"#F6F7F8"];
        _collectionView.dataSource = self;
        _collectionView.delegate = self;
        _collectionView.pagingEnabled = NO;
        _collectionView.scrollsToTop = NO;
        _collectionView.showsHorizontalScrollIndicator = NO;
        layout.minimumLineSpacing = 0;
        layout.minimumInteritemSpacing = 0;
        _collectionView.contentOffset = CGPointMake(0, 0);
        [_collectionView registerClass:[UKListenStudentCollectionViewCell class] forCellWithReuseIdentifier:@"UKListenStudentCollectionViewCell"];
        //注冊頭視圖
        [_collectionView registerClass:[UICollectionReusableView class] forSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:@"headview"];
    }
    return _collectionView;
}

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

- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
    UKStudentListenWorkListModel *model = self.dataM[section];
    return 10;
}

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

- (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView viewForSupplementaryElementOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath
{
    if (self.data.count) {
        UICollectionReusableView *headerView = [collectionView dequeueReusableSupplementaryViewOfKind:kind withReuseIdentifier:@"headview" forIndexPath:indexPath];
        return headerView;
    }
    return nil;
}

- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout minimumInteritemSpacingForSectionAtIndex:(NSInteger)section
{
    return 0;
}

- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section
{
    return 0;
}

- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout referenceSizeForHeaderInSection:(NSInteger)section{
    return CGSizeMake(Main_Screen_Width, 44);
}

- (void)collectionView:(UICollectionView *)collectionView willDisplayCell:(UICollectionViewCell *)cell forItemAtIndexPath:(NSIndexPath *)indexPath {
}

- (void)collectionView:(UICollectionView *)collectionView didEndDisplayingCell:(UICollectionViewCell *)cell forItemAtIndexPath:(NSIndexPath *)indexPath {
}

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

}