iOS programmatic grouped table empty - ios

Question

I have a programmatically implemented tableView, in the grouped style.
All I am getting is the gray pinstripes when it should be populated. So it is loading, but not ... something...
What more is necessary?
If no more, then where else ought I look?
Also, how can I make the background color of the table the same as the cell's white color?
- (void)loadView {
[super loadView];
UITableView *view = [[UITableView alloc] initWithFrame:[UIScreen mainScreen].applicationFrame style:UITableViewStyleGrouped];
[view setAutoresizingMask:UIViewAutoresizingFlexibleHeight|UIViewAutoresizingFlexibleWidth];
self.view = view;
[view reloadData];
}
Is viewDidLoad necessary?
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
}
Thank you,
Morkrom

Answer 1

You have to provide your tableView with data.
For staters you'll need to define a dataSource. Its common to just use your viewController as the dataSource.
// in the .h find something similar and add <UITableViewDataSource>
#interface ViewController : UIViewController <UITableViewDataSource>
then when you make the tableView.
view.datasource = self;
Then you'll need to provide the data itself. Implement these methods:
#pragma mark - UITableView Datasource
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 3;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return 3;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
if (!cell) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
}
[cell.textLabel setText:#"A Cell"];
return cell;
}
Those methods will create 3 sections each with 3 rows. All the cells will just say A Cell. This is the basis for all tableViews. Just customize the data :)

Answer 2

You need to set dataSource and delegate properties for your table view so it will be able to pull data from them:
UITableView *view = ...
view.dataSource = self;
view.delegate = self;

Answer 3

have protocol in .h file and attach delegate and source with file owner