UITableView correcting scroll position after device rotation

Question

I\'m building something like a reader for a book. When the user rotates the phone I want to increase the font size. I\'m using a UITableView to display chunks o

Answer 1

Use delegate method willRotateToInterfaceOrientation: to store the visible cell in an array then using the other delegate method of UITableView didRotateFromInterfaceOrientation: scroll to the visible index path that you stored earlier in the array. This is recommended and you don't have to rely on the inconsistent 0.2 seconds wait in a different thread to handle post rotate event.

- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
{
    // Save the visible row position
    visibleRows = [tableview indexPathsForVisibleRows];
}

-(void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{
    // Scroll to the saved position prior to screen rotate
    [tableView scrollToRowAtIndexPath:[visibleRows objectAtIndex:0] atScrollPosition:UITableViewScrollPositionTop animated:NO];
}