Databases
StackOverflow2013
Postsdbo
POUITableView does not show any cells after UIViewController popped then returned to
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POUITableView does not show any cells after UIViewController popped then returned to
    primarykey
    data
    text
    <p>I have a UITableView within a UIViewController and am having an issue where the table displays ok on first load via a segue, but when you push the back button on the header, then go forward to the UIViewController again the table is blank.</p> <p>I'm using a custom classed tableview, but the default methods like numberOfRowsInSection and cellForRowAtIndexPath are being called on the second load. In fact, the cellForRowAtIndexPath method is returning a cell with the cell.textlabel.text properly set as expected. numberOfRowsInSection is returning the correct number of rows. And numberOfSectionsInTableView is returning 1. But when everything finishes loading there's nothing in the table.</p> <p>I'm using storyboards and the prototype cell is set up with a reuse identifier. I've tried calling [tableView reloadData] from the view controller in both the viewDidLoad and viewWillAppear methods.</p> <p>The datasource and delegate are both set ok (I think - or else it wouldn't work first time it's loaded).</p> <p>I'm not doing anything different (that I can see) to other tables in my app, apart from using the UITableView within a UIViewController rather than using a UITableViewController. Is there anything that I'm missing that the UITableViewController handles automatically?</p> <p>I'm a bit stumped - any ideas would be much appreciated! </p> <p>EDIT: The custom class used in the UITableView isn't under ARC control, as it's an old library that I'm using. I'm using the -fno-objc-arc flag. Could this be something to do with it? </p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USaritchie
    1. USaritchie
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. COTry logging the address of the view controller and the table view in `viewWillAppear` and the table that's passed to you (along with the controller) when `numberOfRowsInSection` is being called. My suspicion is that your navigation actions somehow result in a view/controller being updated that are different from the ones handling the display.
      singulars
      1. POUITableView does not show any cells after UIViewController popped then returned to
      1. USPhillip Mills
    2. CODid you mean by using something like: NSLog(@"Address of table: %p", self);? Using this I get the same address for the tableview in the viewWillAppear and numberOfRowsInSection. I'm not sure how to reference the parent view controller from within the tableview class to check the controller address though.
      singulars
      1. POUITableView does not show any cells after UIViewController popped then returned to
      1. USaritchie
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload