how to implement cyclic scrolling on tableview

Question

Could you please help me with circular scrolling in tableview please.

I want that if I scroll down tableview, the rows should go in the reverse way -- it should app

Answer 1

You could "fake" the cyclic scrolling repeating the same cells all over again. In the numberOfRowsInSection method, return n times the actual number of rows. Make sure n is big enough.

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return numberOfActualRows*100;
}

Then in the cellForRowAtIndexPath method (and elsewhere) use the mod operator (%) to return the proper cell.

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    NSUInteger actualRow = indexPath.row % numberOfActualRows;
    ...
}

You may want to hide the sroll indicator.

self.tableView.showsVerticalScrollIndicator = NO;

You may also want to scoll the table view to the middle before you display the table so scrolling backwards works fine.

[self.tableView scrollToRowAtIndexPath: [NSIndexPath indexPathForRow:[self tableView:self.tableView numberOfRowsInSection:0]/2 inSection:0]  atScrollPosition:UITableViewScrollPositionTop animated:NO];

Of course, the user would eventually hit the bottom or the top if he/she kept scrolling over and over.