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