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January 13, 2020 14:24
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tableview expandable header
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| var selectedIndx = -1 | |
| var newIndexSet = IndexSet() | |
| var thereIsCellTapped = false | |
| func numberOfSections(in tableView: UITableView) -> Int { | |
| return 3 | |
| } | |
| func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat { | |
| return 30 | |
| } | |
| func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? { | |
| let button = UIButton(type: .system) | |
| button.setTitleColor(.darkGray, for: .normal) | |
| button.backgroundColor = #colorLiteral(red: 0.6666666865, green: 0.6666666865, blue: 0.6666666865, alpha: 1) | |
| button.titleLabel?.font = UIFont.boldSystemFont(ofSize: 20) | |
| button.layer.cornerRadius = 5 | |
| button.contentHorizontalAlignment = .left | |
| button.titleEdgeInsets = UIEdgeInsets(top: 0, left: 5, bottom: 0, right: 0) | |
| button.addTarget(self, action: #selector(btnSectionClick(sender:)), for: .touchUpInside) | |
| if section == 0 { | |
| //adiciona titulo aqui | |
| button.setTitle("header 1", for: .normal) | |
| } else if section == 1 { | |
| button.setTitle("header 2", for: .normal) | |
| } else if section == 2 { | |
| button.setTitle("header 3", for: .normal) | |
| } | |
| button.tag = section | |
| return button | |
| } | |
| func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat { | |
| if indexPath.section == selectedIndx && thereIsCellTapped{ | |
| self.tableView.separatorStyle = .singleLine | |
| return 182 | |
| }else{ | |
| self.tableView.separatorStyle = .none | |
| return 4 | |
| } | |
| } | |
| //action when select header | |
| @objc func btnSectionClick(sender:UIButton!){ | |
| print("selected index",sender.tag) | |
| if selectedIndx != sender.tag { | |
| self.thereIsCellTapped = true | |
| self.selectedIndx = sender.tag | |
| newIndexSet = [selectedIndx] | |
| if sender.tag == 2 { | |
| tableView.separatorStyle = .singleLine | |
| } | |
| tableView.reloadSections(newIndexSet, with: .fade) | |
| } else { | |
| // there is no cell selected anymore | |
| if sender.tag == 2 { | |
| tableView.separatorStyle = .none | |
| } | |
| self.thereIsCellTapped = false | |
| self.selectedIndx = -1 | |
| tableView.reloadSections(newIndexSet, with: .fade) | |
| } | |
| } |
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