Obj-C- Datasource for UICollectionView inside of UITableViewCell? - ios

Question

I have a TableView (self.tableView) inside of a ViewController (DashboardViewController). Inside of this tableview, I have a custom cell that contains a UICollectionView.
Everything works fine, however in order to populate the UICollectionView, I'm currently calling data inside my UITableViewCell, which I don't want to do, as every time I scroll up and down, data is called.
Is it possible to make the UICollectionView's datasource an NSMutableArray inside DashboardViewController, instead of having to populate the NSMutableArray inside the UITableViewCell in which it is sitting?
My setup right now:
UITableViewCell.h
#property (weak, nonatomic) IBOutlet UICollectionView *collectionView;
#property (strong, nonatomic) NSMutableArray *clientsWeek;
UITableViewCell.m
- (void)awakeFromNib {
[super awakeFromNib];
// Initialization code
[self.collectionView registerNib:[UINib nibWithNibName:#"ClientCollectionViewCell" bundle:nil] forCellWithReuseIdentifier:#"ClientCollectionViewCell"];
[_collectionView setDataSource:self];
[_collectionView setDelegate:self];
NSMutableDictionary *viewParams1 = [NSMutableDictionary new];
[viewParams1 setValue:#"cdata" forKey:#"view_name"];
[DIOSView viewGet:viewParams1 success:^(AFHTTPRequestOperation *operation, id responseObject) {
self.clientsWeek = [responseObject mutableCopy];
NSLog(#"The people are here %#", self.clientsWeek);
[self.collectionView reloadData];
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Failure: %#", [error localizedDescription]);
}];
}

Answer 1

Under the premise that the CellReuseIdentifier is set correctly.
Of course, you can choose to get all the data in DashboardViewController, including the datasource of UICollectionView. Here you need to combine the data. The data source of the tableview must be an array, so the data source of UICollectionView can be placed in the array. Like this
[
{
"UITableViewCellData":{},
"UICollectionViewData":{}
},
...
]
Of course you can also use data model objects to replace.
Then you need to expose a method for receiving the data source to the cell, in which you can refresh your UICollectionView.
UITableViewCell.h
- (void)cellWithDataSource:(NSDictionary *)dataSource;
UITableViewCell.m
- (void)cellWithDataSource:(NSDictionary *)dataSource{
NSDictionary *tableViewDataSource = dataSource[#"UITableViewCellData"];
NSDictionary *collectionViewDataSource = dataSource[#"UICollectionViewData"];
...
}
DashboardViewController passes data to cell
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"CellID"];
// first obtains the datasource of each cell, and passes it to each cell
[cell cellWithDataSource:datasource];
return cell;
}