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POiPhone SDK: Inserting and updating a UITableView with a new row
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  1. POiPhone SDK: Inserting and updating a UITableView with a new row
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    copied!<p>I have a tableView that needs to be updated after information has been inserted from another view. If I perform a </p> <pre><code>[self.tableView reloadData]; </code></pre> <p>The very next time I insert more information in another view and try to reload the table, all the currently visible rows are duplicated.</p> <p>In other words, when I start up the app I have:</p> <pre><code>tableView: Row 1 Row 2 </code></pre> <p>Then I submit some information that will also show up in the table and suddenly I have:</p> <pre><code>tableView Row 1 Row 2 Row 3 &lt;- info I just added Row 1 Row 2 </code></pre> <p>My numberOfRowsInSection implementation looks like this:</p> <pre><code>- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { return [ItemsController sharedItemsController].count; } </code></pre> <p>My cellForRowAtIndexPath implementation looks like this:</p> <pre><code>- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { ItemsController* controller = [ItemsController sharedItemsController]; NSMutableArray* recentItems = controller.listOfRecentItems; CustomCell *cell = nil; NSUInteger row = [indexPath row]; if( row &lt; recentItems.count ) { Items* item = [recentItems objectAtIndex:row]; if( recentCellData == nil ) recentCellData = [[NSMutableDictionary alloc] initWithCapacity:[indexPath length]]; if( [recentCellData count] &gt; 0 ) cell = [recentCellData objectForKey:[NSString stringWithFormat:@"%d", row]]; if (cell == nil) { UIViewController * view1 = [[UIViewController alloc] initWithNibName:@"CustomCell" bundle:nil]; cell = (CustomCell*)[view1 view]; [recentCellData setObject:cell forKey:[NSString stringWithFormat:@"%d",row]]; } // do some other stuff here } // Set up the cell return cell; } </code></pre> <p>What's the best way to update the table and avoid duplicating the currently visible rows. Thank in advance for all the help!</p>
 

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