多個UICollectionView在同一個ViewController

Question

我使用自定義UICollectionView佈局具有不同大小的單元格，我不能在這個部分。

在同一UIViewController中使用多個UICollectionView s是不錯的主意嗎？有什麼建議嗎？

Answer 1

很簡單

爲每UICollectionView代表

- (NSUInteger)maximumNumberOfColumnsForCollectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout 

- (CGFloat)collectionView:(UICollectionView*)collectionView layout:(UICollectionViewLayout*)collectionViewLayout 
heightForItemAtIndexPath:(NSIndexPath*)indexPath 

- (UICollectionViewCell*)collectionView:(UICollectionView*)collectionView 
cellForItemAtIndexPath:(NSIndexPath*)indexPath 
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath 
- (NSInteger)collectionView:(UICollectionView*)collectionView numberOfItemsInSection:(NSInteger)section` 
- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView*)collectionView` 

寫內部條件：

if (collectionView == myCollectionView1) 
    { 
    // do this 
    } 
    else if (collectionView == myCollectionView2) 
    { 
    // do this 
    } 

讓在

- (NSInteger)collectionView:(UICollectionView*)collectionView numberOfItemsInSection:(NSInteger)section 
{ 
    if (collectionView == myCollectionView1) 
    { 
    return 12; 
    } 
    else if (collectionView == myCollectionView2) 
    { 
    return 7; 
    } 
    return 0; 
} 

Answer 2

使用Tag屬性FO比方說r在一個View Controller中區分多個UICollectionView或UITableView。現在

firstCollectionView.tag = 1; 
secondCollectionView.tag = 2; 
and so on ... 

，在委託方法使用，如果檢查UICollectionView

-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView 
    cellForItemAtIndexPath:(NSIndexPath *)indexPath 
{ 
    if(collectionView.tag == 1) 
    { 
    //cell for first UICollectionView or CollectionView with tag equal to 1 
    } 
    else if(collection.tag == 2) 
    { 
    //cell for second UICollectionView or CollectionView with tag equal to 2 
    } 
} 

使用相同的技術在其他委託方法。

Answer 3

-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{ 
    if (collectionView ==_tbl_Catogary) { 
     return 10; 
    } 
    if (collectionView == _tbl_SubCatogary) { 
     return 4; 
    } 
    if (collectionView == _tbl_NearbyAds) { 
     return 8; 
    } 
    else 
     return 21; 
} 
-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath 
{ 
    UICollectionViewCell *mycell; 
    if(collectionView == _tbl_Catogary){ 
     CatogaryCVC *cell = (CatogaryCVC *)[collectionView dequeueReusableCellWithReuseIdentifier:@"CatogaryCVC" forIndexPath:indexPath]; 
     mycell =cell; 
    } 
      if (collectionView == _tbl_SubCatogary) { 
     SubcatogaryCVC *cell = (SubcatogaryCVC *)[collectionView dequeueReusableCellWithReuseIdentifier:@"SubcatogaryCVC" forIndexPath:indexPath]; 
     mycell=cell; 
    } 
    if (collectionView == _tbl_NearbyAds) { 
     NearbyAdCVC *cell = (NearbyAdCVC *)[collectionView dequeueReusableCellWithReuseIdentifier:@"NearbyAdCVC" forIndexPath:indexPath]; 
     mycell = cell; 
    } 
    if (collectionView == _tbl_popularAds) { 
     PopularAdCVC *cell = (PopularAdCVC *) [collectionView dequeueReusableCellWithReuseIdentifier:@"PopularAdCVC" forIndexPath:indexPath]; 
     mycell = cell; 
    } 
    return mycell; 
} 

重命名爲您的收藏視圖出口