從Viewcontroller移動到另一個圖像後

Question

好吧，我是一個NOOB與iPhone，並有一個簡單的問題，我假設。我發現了很多幫助，但不知道我在做什麼錯。我只是想用相機拍攝一張照片，然後在成功捕捉後將其移至下一個視圖控制器，並將其置於圖像視圖中。從這裏得到了大部分的代碼，所以感謝已經，但似乎無法使它工作，我不明白所有不同類型的錯誤。我認爲它一定是我殺了視圖控制器然後試圖重新實例化它，但有點失去了請幫助。

#import "ViewController.h" 

@interface ViewController() 

@end 

@implementation ViewController 

- (IBAction)TakePhoto:(id)sender{ 
    picker = [[UIImagePickerController alloc] init]; 
    picker.delegate = self; 
    [picker setSourceType:UIImagePickerControllerSourceTypeCamera]; 
    [self presentViewController:picker animated:YES completion:NULL]; 
} 

- (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{ 
    image = [info objectForKey:UIImagePickerControllerOriginalImage]; 
    [imageView setImage:image]; 
    [self dismissViewControllerAnimated:YES completion:NULL]; 

    NSString *submit = @"viewControllerSubmit"; 
    UIStoryboard *mainstoryboard = [UIStoryboard storyboardWithName:submit bundle:nil]; 
    UIViewController *vc = [mainstoryboard instantiateViewControllerWithIdentifier:submit]; 
    [self presentViewController:vc animated:YES completion:nil]; 
} 

- (void) imagePickerControllerDidCancel:(UIImagePickerController *)picker{ 
    [self dismissViewControllerAnimated:YES completion:NULL]; 
} 

- (void)viewDidLoad { 
    [super viewDidLoad]; 
    // Do any additional setup after loading the view, typically from a nib. 
} 

- (void)didReceiveMemoryWarning { 
    [super didReceiveMemoryWarning]; 
    // Dispose of any resources that can be recreated. 
} 

@end 

正如你可以看到我已經嘗試了一些東西。我試圖尋找錯誤，但嘗試其他的東西無濟於事。任何援助將是偉大的，在此先感謝。

編輯的版本和全碼低於所

=================================== ================================= 好吧，我發佈我的完整代碼。我可以讓表單從一個到另一個，因爲我只是簡單地調用了故事板名稱。但是，我無法從相機中取得圖像，並顯示在下一張表格上。我所得到的是一個空的ImageView，沒有任何錯誤。我錯過了什麼？請幫忙研究這個問題，並研究了一大堆。

第一個視圖控制器.m文件

#import "ViewController.h" 
#import "ViewControllerSubmit.h" 

@interface ViewController() 

@end 

@implementation ViewController{ 

UIImage *newImage; 

} 


- (IBAction)TakePhoto:(id)sender{ 
    picker = [[UIImagePickerController alloc] init]; 
    picker.delegate = self; 
    [picker setSourceType:UIImagePickerControllerSourceTypeCamera]; 
    [self presentViewController:picker animated:YES completion:nil]; //nil from Null 
} 

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{ 
    if ([segue.identifier isEqualToString:@"ViewControllerSubmit"]){ 
     ViewControllerSubmit *destViewController = segue.destinationViewController; 
     destViewController.theNewImage = newImage; 
    } 
} 

- (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{ 
    newImage = [info objectForKey:UIImagePickerControllerOriginalImage]; 
[self dismissViewControllerAnimated:YES completion:NULL]; 

    NSString *submit = @"ViewControllerSubmit"; 
    NSString *main = @"Main"; 
    UIStoryboard *mainstoryboard = [UIStoryboard storyboardWithName:main bundle:nil]; 
    UIViewController *vc = [mainstoryboard instantiateViewControllerWithIdentifier:submit]; 
    [self presentViewController:vc animated:YES completion:nil]; 

} 


- (void) imagePickerControllerDidCancel:(UIImagePickerController *)picker{ 
    [self dismissViewControllerAnimated:YES completion:NULL]; 
} 


- (void)viewDidLoad { 
    [super viewDidLoad]; 
    // Do any additional setup after loading the view, typically from a nib. 
} 

- (void)didReceiveMemoryWarning { 
    [super didReceiveMemoryWarning]; 
    // Dispose of any resources that can be recreated. 
} 

@end 

第一個視圖控制器.h文件中

#import <UIKit/UIKit.h> 

@interface ViewController : UIViewController <UIImagePickerControllerDelegate, UINavigationControllerDelegate>{ 
    UIImagePickerController *picker; 
} 


@end 

第二個視圖控制器.m文件

#import "ViewControllerSubmit.h" 

@interface ViewControllerSubmit() 
@property (weak, nonatomic) IBOutlet UIImageView *_image; 

@end 

@implementation ViewControllerSubmit 

- (void)viewDidLoad { 
    [super viewDidLoad]; 
    // Do any additional setup after loading the view. 
    self._image.image = self.theNewImage; 
} 

- (void)didReceiveMemoryWarning { 
    [super didReceiveMemoryWarning]; 
    // Dispose of any resources that can be recreated. 
} 

@end 

第二個視圖控制器.h文件

#import "ViewController.h" 

@interface ViewControllerSubmit : ViewController 
@property (strong, nonatomic) UIImage *theNewImage; 

@end 

再次，沒有錯誤，相機出現，拍攝照片，當我點擊「使用照片」時，第二個視圖控制器彈出，但圖像視圖不顯示拍攝的圖像。

我錯過了什麼？任何幫助將是偉大的，再請原諒無知，我是iPhone的新手。

Answer 1

你需要編寫代碼導航在完成塊...

嘗試下面的代碼，

- (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{ 
    image = [info objectForKey:UIImagePickerControllerOriginalImage]; 
    [imageView setImage:image]; 
    [picker dismissViewControllerAnimated:YES completion:^{ 
     NSString *submit = @"viewControllerSubmit"; 
     UIStoryboard *mainstoryboard = [UIStoryboard storyboardWithName:submit bundle:nil]; 
     UIViewController *vc = [mainstoryboard instantiateViewControllerWithIdentifier:submit]; 
     [self presentViewController:vc animated:YES completion:nil]; 
    }]; 

}