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POReload UITableView Data without reloading the view?
 

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  1. POReload UITableView Data without reloading the view?
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    <p>I have a <code>UITableView</code> that contains a bunch of items whose status I get from a web app each time the table loads via a method <code>refreshRows</code>. After I do this I reload the table.</p> <p>When I added an item to my table, I found myself getting a message “Invalid update: invalid number of rows in section”. Reloading the data in the table turned out to be necessary, so I made the change from the old to the new <code>viewDidAppear</code> methods (both shown below). I now have two <code>reloadData</code> calls, which both refresh my view.</p> <p>QUESTION: Is there a cleaner way to do this? After an add I need to reload my data, but I'd prefer not to reload the view until all the statuses from the web are fetched.</p> <pre><code>- (void)viewDidAppear:(BOOL)animated // new { NSLog(@"viewDidAppear"); [super viewDidAppear:animated]; [self.tableView reloadData]; // &lt;------------- Prettier way to do this? [self refreshRows]; [self.tableView reloadData]; } - (void)viewDidAppear:(BOOL)animated // old { NSLog(@"viewDidAppear"); [super viewDidAppear:animated]; [self refreshRows]; [self.tableView reloadData]; } - (void)refreshRows { // foreach row get status from webapp } </code></pre> <p>EDIT:</p> <p>Here's the requested code:</p> <pre><code>- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { id &lt;NSFetchedResultsSectionInfo&gt; sectionInfo = [[self.fetchedResultsController sections] objectAtIndex:section]; return [sectionInfo numberOfObjects]; } </code></pre>
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    1. USnflacco
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    1. COcan you post you numberOfRowsInSection method? Are you adding items to the table using insertRowsAtIndexPaths? the error you mentioned is usually caused when you're calling the tableView insert method without updating your model.
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    2. COthat's what is happening... but there is a way to reload the model without reloading the view?
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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.

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