在视图之间传递 int 不起作用

Question

我有一个简单的代码来获取一个整数并将其传递给下一个视图，但 int 在另一个视图上总是以 0 结束。我知道这不是变量的问题，因为它是主视图上的真正 int 。这是我的代码：

AnswerViewController *ansViewController = [[AnswerViewController alloc] initWithNibName:@"AnswerViewController" bundle:nil];
ansViewController.num = theNum;
UIStoryboard *storyBoard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
UIViewController *mainView = [storyBoard instantiateViewControllerWithIdentifier:@"ansView"];
[self presentViewController:mainView animated:YES completion:nil];

Answer 1

这是正确的方法：

//Initialize the storyboard
UIStoryboard *storyBoard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
//initialize the ViewController
AnswerViewController *ansViewController = 
   [storyBoard instantiateViewControllerWithIdentifier:@"AnswerViewController"];
//Assign the value to the controller property
ansViewController.num = theNum;
//Finally present the view Controller
[self presentViewController:ansViewController animated:YES completion:nil];