UIExpandableTableView is a UITableView subclass that gives you easy access to expandable and collapsable sections by just implementing a few more delegate and dataSource protocols.
- Load the UIExpandableTableView in a UITableViewController
- (void)loadView {
self.tableView = [[UIExpandableTableView alloc] initWithFrame:CGRectZero style:UITableViewStylePlain];
}- Implement the UIExpandableTableViewDatasource protocol
- (BOOL)tableView:(UIExpandableTableView *)tableView canExpandSection:(NSInteger)section {
// return YES, if the section should be expandable
}
- (BOOL)tableView:(UIExpandableTableView *)tableView needsToDownloadDataForExpandableSection:(NSInteger)section {
// return YES, if you need to download data to expand this section. tableView will call tableView:downloadDataForExpandableSection: for this section
}
- (UITableViewCell<UIExpandingTableViewCell> *)tableView:(UIExpandableTableView *)tableView expandingCellForSection:(NSInteger)section {
// this cell will be displayed at IndexPath with section: section and row 0
}- Implement the UIExpandableTableViewDelegate protocol
- (void)tableView:(UIExpandableTableView *)tableView downloadDataForExpandableSection:(NSInteger)section {
// download your data here
// call [tableView expandSection:section animated:YES]; if download was successful
// call [tableView cancelDownloadInSection:section]; if your download was NOT successful
}
