ios - 控制器间传值后，怎么在tableview刷新

Question

像电商物流类app，都有添加常用地址，在二级页面填完地址信息后，通过block回调可以实现二级页面到一级页面的传值，但是，在二级页面返回一级页面的时候，怎么刷新一级页面的tableview,传递的值怎么保存？

Answer 1

The first method is to use delegate. After passing the value, call the tableView reloadData method on the first-level page. The passed value can be saved locally or temporarily saved in the first-level page variable.
The second method is BLOCK, on ​​the second-level interface. Define Block and then call it. When Block defines the function block in the first-level page, add [self.tableView reloadData] to the function after passing the value

Answer 2

You can use Delegate to transfer values ​​between pages
Define a Delegate method and call TableView.reload() in it

Answer 3

Third way: Using MVVM, the data is stored in the viewModel, and the view binds the data in the viewModel. When the data changes, the view layer receives a notification, and then the interface can be updated. Binding can be implemented using ReactiveCocoa or RxSwift.