Databases
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    <p>But you can reload only sections which <strong>contain same number of rows</strong> <em>(or you have to manually add or remove them)</em>. Otherwise you will get:</p> <p><code> *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid update: invalid number of rows in section 2. The number of rows contained in an existing section after the update (1) must be equal to the number of rows contained in that section before the update (0), plus or minus the number of rows inserted or deleted from that section (0 inserted, 0 deleted) and plus or minus the number of rows moved into or out of that section (0 moved in, 0 moved out).' </code></p> <p>Which is not required when you use <code>[tableView reloadData]</code>.</p> <p>When you need to reload a section and you <strong>have changed number of rows inside it</strong>, you could use something like this:</p> <pre><code>NSIndexSet *indexSet = [NSIndexSet indexSetWithIndex:section]; [self beginUpdates]; [self deleteSections:indexSet withRowAnimation:rowAnimation]; [self insertSections:indexSet withRowAnimation:rowAnimation]; [self endUpdates]; </code></pre> <p>If you put it in a category (like bandejapaisa shows) it could look like this:</p> <pre><code>- (void)reloadSection:(NSInteger)section withRowAnimation:(UITableViewRowAnimation)rowAnimation { NSIndexSet *indexSet = [NSIndexSet indexSetWithIndex:section]; [self beginUpdates]; [self deleteSections:indexSet withRowAnimation:rowAnimation]; [self insertSections:indexSet withRowAnimation:rowAnimation]; [self endUpdates]; } </code></pre>
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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.

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