How to close another expanded section when second Section is clicked - iphone

Question

I am creating an app that contain the expandable section. I have implemented that using this tutorial.
But now i want to close first expanded section when i clicked another section. Can someone help me with this.

Answer 1

Apple has provided a sample code. Here is the link TVAnimationGestures.
But there is a small bug in it please refer post.

Answer 2

You can move the logic code in tableView:didSelectRowAtIndexPath: to a new method (switchSection) and call it on the expanded section to collapse it before expanding the new section. Note that you don't need expandedSections set anymore as you'll have only one section expanded.
NSUInteger expandedSection; /// Define this instead of expandedSections
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if ([self tableView:tableView canCollapseSection:indexPath.section]) {
if (!indexPath.row) {
NSInteger section = indexPath.section;
BOOL currentlyExpanded = (expandedSection == section);
/// Collapse expanded section
if (expandedSection >= 0) {
[self switchSection:expandedSection];
}
/// Expand the new section if needed
if (!currentlyExpanded) {
[self switchSection:section];
}
}
}
}
- (void)switchSection:(NSInteger)section {
BOOL currentlyExpanded = (expandedSection == section);
NSInteger rows;
NSMutableArray *tmpArray = [NSMutableArray array];
if (currentlyExpanded) {
expandedSection = -1;
rows = [self tableView:tableView numberOfRowsInSection:section];
} else {
expandedSection = section;
rows = [self tableView:tableView numberOfRowsInSection:section];
}
for (int i = 1; i < rows; i++) {
NSIndexPath *tmpIndexPath = [NSIndexPath indexPathForRow:i inSection:section];
[tmpArray addObject:tmpIndexPath];
}
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
if (currentlyExpanded) {
[tableView deleteRowsAtIndexPaths:tmpArray withRowAnimation:UITableViewRowAnimationTop];
cell.accessoryView = [DTCustomColoredAccessory accessoryWithColor:[UIColor grayColor] type:DTCustomColoredAccessoryTypeDown];
} else {
[tableView insertRowsAtIndexPaths:tmpArray withRowAnimation:UITableViewRowAnimationTop];
cell.accessoryView = [DTCustomColoredAccessory accessoryWithColor:[UIColor grayColor] type:DTCustomColoredAccessoryTypeUp];
}
}