How to get all indexPaths from a UITableView?

Wed, May 27, 2009 One-minute read

I find this a very basic question, but somewhat difficult to find in the Apple documentation. The answer is not found in the NSIndexPath Class Reference, but in the NSIndexPath UIKit Additions. That’s why I think some people would not know about the following method which allows us to get a specified indexPath from a UITableView.

The method is:

+ (NSIndexPath *)indexPathForRow:(NSUInteger)row inSection:(NSUInteger)section

And it returns an indexPath object initialized with the indexes of a specific row and section in a table view.

With this method we will be able to retrieve all the indexPaths from a table view performing a loop like this:

NSInteger nSections = [tableView numberOfSections];
for (int j=0; j<nSections; j++) {
  NSInteger nRows = [tableView numberOfRowsInSection:j];
  for (int i=0; i<nRows; i++) {
    NSIndexPath *indexPath = [NSIndexPath indexPathForRow:i inSection:j];
    //Do something with your indexPath. Maybe you want to get your cell,
    // like this:
    //UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];

I hope this helps. If you find an easier way, please tell me.