ตัวอย่างการใช้ UIAlertController

AlertControllerEx.m

FDPGroup *group = self.datasource[indexPath.row];

UIAlertController* alert = [UIAlertController alertControllerWithTitle:LocalizedString(@"Rename Group")
                                              message:LocalizedString(@"Input Group Name")
                                              preferredStyle:UIAlertControllerStyleAlert];
            
  UIAlertAction* cancelAction = [UIAlertAction actionWithTitle:LocalizedString(@"Cancel") 
                                                style:UIAlertActionStyleCancel 
                                                handler:^(UIAlertAction * action) {
    [[self.tableView cellForRowAtIndexPath:indexPath] setSelected:false];
  }];
            
  UIAlertAction* renameAction = [UIAlertAction actionWithTitle:LocalizedString(@"Rename") 
                                                style:UIAlertActionStyleDefault 
                                                handler:^(UIAlertAction * _Nonnull action) {
      FDPFormulaGroup *group = self.formulaGroups[indexPath.row];
      UITextField *newGroupName = alert.textFields[0];
      group.groupName = newGroupName.text;
      [[FDPFormulaGroupStore sharedStore] renameGroup:group.idFmGrp toName:group.groupName];
      [self.tableView reloadData];
  }];
            
  [alert addTextFieldWithConfigurationHandler:^(UITextField * _Nonnull textField) {
      textField.text = group.groupName;
      textField.clearButtonMode = UITextFieldViewModeWhileEditing;
  }];
            
  [alert addAction:cancelAction];
  [alert addAction:renameAction];
            
[self presentViewController:alert animated:YES completion:nil];