CellForRowAtIndexPath is not invoked

问题

I'm writing an app hat has many views and I used sliding views library (ECSlidingViews). The problem is when I fill an array with objects and fill the table with the objects in tableView:cellForRowIndexPath: method, it does present the data in the table, but when I go to other view and come back the data disappears because tableView:cellForRowIndexPath: is not called. Here is the code:

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath   
{   
NSLog(@"begin of cellForRowAtIndexPath");    
SchedualeCell *cell = (SchedualeCell *)[tableView dequeueReusableCellWithIdentifier:@"Cell"];    
Course *temp = [array objectAtIndex:indexPath.row];    
cell.nameLb.text = temp.name;    
cell.hourLb.text = [NSString stringWithFormat:@"%d",temp.hour];    
cell.startTimeLb.text = temp.startTime;    
cell.endTimeLb.text = temp.endTime;    
NSLog(@"End of cellForRowAtIndexPath");    
return cell;    
}

tableView:numberOfRowsInSection: and numberOfSectionsInTableView: is invoked when I come back to the view that has the table view.

P.S.: The view is UIViewController that has table view inside of it, and I searched all StackOverflow before posting my problem.

EDIT : this is where I set the delegate and datasource

- (void)viewDidLoad
{
    [super viewDidLoad];
    NSLog(@"Did Appear");
    // Do any additional setup after loading the view.
    self.view.layer.shadowOpacity = 0.75f;
    self.view.layer.shadowRadius = 10.0f;
    self.view.layer.shadowColor= [UIColor blackColor].CGColor;

    if (![self.slidingViewController.underLeftViewController isKindOfClass:[MenuViewController class]])
    {
        self.slidingViewController.underLeftViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"Menu"];
    }
    [self.view addGestureRecognizer:self.slidingViewController.panGesture];

    if (array == nil)
    {
        array = [[NSMutableArray alloc]init];
    }

    table.delegate = self;
    table.dataSource = self;
    [table reloadData];

}

and I did included The delegate and datasource in the header

@interface MainViewController : UIViewController<UITableViewDataSource , UITableViewDelegate,addDelegate>

回答1:

First of all , it's not numberOfRowsAtSection and numberOfTableView. It's numberOfSectionsInTableView and numberOfRowsInSection.

Things you can do :

1) NSLog your numberOfRowsInSection. Note that , If it's "0" then your cellForRowAtIndexPath is never going to be called.

2) If you are using your UITableView inside some UIView then you should add :

[self.view addSubview:table];

3) Don't Forget to include :

@interface yourViewController : UIViewController<UITableViewDataSource,UITableViewDelegate>

回答2:

Once check that you reframed the tableview in ViewWillAppear. Some times if we set out of frame, CellForRowAtIndexPath will not call.

来源：https://stackoverflow.com/questions/16171899/cellforrowatindexpath-is-not-invoked

标签

iphone

ios

objective-c

uitableview