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POAutomatically expand UITableView - NSRangeException
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copied!<p>I have a SQLite database tied to my uitableview. There are about 2000 rows, so I retrieve 25 rows at first. Once I scroll to the end of the list, I want it to automatically retrieve 25 more rows. </p> <p>Here's the method I'm using now. Ignore what would happen if I load all 2000 rows, I'll worry about that later. In <code>tableView:numberOfRowsInSection:</code> I return one more than the currently loaded rows. Then in <code>tableView:cellForRowAtIndexPath:</code> I load more rows if it loads the last row.</p> <p>Typically I can get down a few pages, but I eventually get an exception: <code>*** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[NSCFArray objectAtIndex:]: index (10) beyond bounds (10)'</code>. The index is always 8-10. I don't know what array it is, but both my <code>rows</code> and <code>indices</code> array have well more than 10 items.</p> <p><code>tableView:cellForRowAtIndexPath:</code></p> <pre><code>if(indexPath.row >= [rows count]) { [cell.textLabel setText:@"Loading..."]; if(!updating && indexPath.row == [rows count]) { updating = YES; [[self tableView] beginUpdates]; NSMutableArray *indices = [NSMutableArray array]; // stmt = ... while(sqlite3_step(stmt) == SQLITE_ROW) { [rows addObject:@"..."]; [indices addObject:[NSIndexPath indexPathForRow:[rows count]-1 inSection:0]]; } [[self tableView] insertRowsAtIndexPaths:indices withRowAnimation:UITableViewRowAnimationNone]; [[self tableView] endUpdates]; updating = NO; } return cell; } </code></pre> <p>Stack trace:</p> <pre><code>#0 0x01ce4004 in ___TERMINATING_DUE_TO_UNCAUGHT_EXCEPTION___ () #1 0x9779df49 in objc_exception_throw () #2 0x01cc5c3b in +[NSException raise:format:arguments:] () #3 0x01cc5b9a in +[NSException raise:format:] () #4 0x00072cc9 in _NSArrayRaiseBoundException () #5 0x00010227 in -[NSCFArray objectAtIndex:] () #6 0x0047fe5b in -[_UITableViewUpdateSupport(Private) _setupAnimationsForExistingVisibleCells] () #7 0x0047f9e0 in -[_UITableViewUpdateSupport initWithTableView:updateItems:oldRowData:newRowData:oldRowRange:newRowRange:context:] () #8 0x002eca2b in -[UITableView(_UITableViewPrivate) _updateWithItems:withOldRowData:oldRowRange:newRowRange:context:] () #9 0x002ec757 in -[UITableView(_UITableViewPrivate) _endCellAnimationsWithContext:] () #10 0x002def56 in -[UITableView endUpdates] () </code></pre>

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