在視圖之間傳遞int不起作用

Question

我有一個簡單的代碼來取整數並將其傳遞給下一個視圖，但int總是在另一個視圖上最終爲0。我知道這不是變量的問題，因爲它變成了主視圖上的真實int。這裏是我的代碼：

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

這是正確的方式是：

//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];