UITableView：如何获取特定部分的所有行？

Question

What I want?
I want to add radio button functionality where a user in particular section can only select one row

How am I doing it?
I added UISwitch and based on what row user click I would like to do the following

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    if (indexPath.section == 1 || indexPath.section == 2) {

      // disable all the rows of this section except indexPath.row          
    }
}

Where am I stuck?

How do I get all the rows for a given section in UITableView ?

PS: I am a week old to iOS and learning, so bear with me if this is a stupid question

Answer 1

Use[tableView cellForRowAtIndexPath:(NSIndexPath *)]

for (int i = 0; i < [self.tableView numberOfRowsInSection:indexPath.section]; i++) {
    if (i != indexPath.row) {
        UITableViewCell* cell = [tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:i inSection:indexPath.section]];
        //Do your stuff
    }
}

Answer 2

Swift 3:

let rowsCount = self.tableView.numberOfRows(inSection: indexPath.section)
    for i in 0..<rowsCount  {
        let cell = self.tableView.cellForRow(at: IndexPath(row: i, section: indexPath.section)) as! UITableViewCell
        // your custom code (deselecting)
    }

Thanks @Soul Clinic for help with this !

Answer 3

This should do the trick.

- (NSArray *)tableView:(UITableView *)tableView visibleCellsInSection:(NSInteger)section
{
    NSPredicate *visibleCellsInSectionPredicate = [NSPredicate predicateWithBlock:^BOOL(UITableViewCell *visibleCell, NSDictionary *bindings) {
        return [tableView indexPathForCell:visibleCell].section == section;
    }];
    return [tableView.visibleCells filteredArrayUsingPredicate:visibleCellsInSectionPredicate];
}

You can put it in a UITableView category if you want.