CODEWITHSUNDEEP
iosobjective-cuitableview
Blair Warner
Blair Warner

Reputation: 55

Custom Cells in TableView: Failed to obtain a cell from its Data Source

I'm using the below code to use two different custom table cells in my table view. Everything looks right, however when I run the app, I get the following error:

Failed to obtain a cell from its dataSource FullMessageViewController: 0x103d61c90

Any idea why this might be?

FullMessageViewController.m

- (void)viewDidLoad {
    [super viewDidLoad];


   static NSString *ChatTableIdentifier = @"ChatTableViewCell";
   static NSString *ChatTableIdentifier2 = @"SwapDetailTableViewCell";


    UINib *nib = [UINib nibWithNibName: ChatTableIdentifier bundle:nil];
    [self.tableView registerNib:nib forCellReuseIdentifier: ChatTableIdentifier];

    UINib *nib2 = [UINib nibWithNibName: ChatTableIdentifier2 bundle:nil];
    [self.tableView registerNib:nib2 forCellReuseIdentifier: ChatTableIdentifier2];

}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{

   static NSString *ChatTableIdentifier = @"ChatTableViewCell";
   static NSString *ChatTableIdentifier2 = @"SwapDetailTableViewCell";


    NSDictionary *data = [self.messages objectAtIndex:indexPath.row];


   if (![data objectForKey:@"field_swaptime"]) {

     NSLog(@"THIS IS DATA %@", data);



       ChatTableViewCell *cell = (ChatTableViewCell *)[tableView dequeueReusableCellWithIdentifier:ChatTableIdentifier forIndexPath:indexPath];


       NSString *userName = [data objectForKey:@"name"];
       [cell.sendingUser setText:userName];

       NSString *messageBody = [data objectForKey:@"body"];
       [cell.messageDisplayed setText:messageBody];

       NSString *timeReceived = [data objectForKey:@"published at"];
       NSLog(@"Message Received at %@", timeReceived);
       [cell.timeStamp setText:timeReceived];


     return cell;

              }

    else {


        SwapDetailTableViewCell *cell = (SwapDetailTableViewCell *)[tableView dequeueReusableCellWithIdentifier:ChatTableIdentifier2 forIndexPath:indexPath];



        NSString *Time = [data objectForKey:@"field_swaptime"];
        NSLog(@"This is time %@", Time);
        [cell.startTime setText:Time];

        NSString *TimeEnd = [data objectForKey:@"field_endswaptime"];
        [cell.endTime setText:TimeEnd];

        return cell;

    }

    }

Upvotes: 0

Views: 78

Answers (2)

rmaddy
rmaddy

Reputation: 318934

Since you are registering a nib for your cell types, you need to replace the use of dequeueReusableCellWithIdentifier: with dequeueReusableCellWithIdentifier:forIndexPath:.

Example. Change:

ChatTableViewCell *cell = (ChatTableViewCell *)[tableView dequeueReusableCellWithIdentifier:ChatTableIdentifier];

to:

ChatTableViewCell *cell = (ChatTableViewCell *)[tableView dequeueReusableCellWithIdentifier:ChatTableIdentifier forIndexPath:indexPath];

And you have some typos in viewDidLoad. Update it as follows:

- (void)viewDidLoad {
    [super viewDidLoad];

    static NSString *ChatTableIdentifier = @"ChatTableViewCell";
    static NSString *ChatTableIdentifier2 = @"SwapDetailTableViewCell";

    UINib *nib = [UINib nibWithNibName: ChatTableIdentifier bundle:nil];  
    [self.tableView registerNib:nib forCellReuseIdentifier: ChatTableIdentifier];

    UINib *nib2 = [UINib nibWithNibName: ChatTableIdentifier2 bundle:nil];
    [self.tableView registerNib:nib2 forCellReuseIdentifier: ChatTableIdentifier2];
}

Upvotes: 1

Jota
Jota

Reputation: 149

Check this line on viewDidLoad

[self.tableView registerNib:nib2 forCellReuseIdentifier:@"ChatTableIdentifier2"];

You're registering a nib with the identifier ChatTableIdentifier2 but you don't actually use that identifier in cellForRowAtIndexPath, you use SwapDetailTableViewCell.

Changing that line to

[self.tableView registerNib:nib2 forCellReuseIdentifier:@"SwapDetailTableViewCell"];

should work

Upvotes: 1

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