從一個視圖圖像傳遞到另一個

Question

我從照片庫的用戶得到一個形象，我想將它傳遞到另一個視圖...

我讀過，我應該能夠簡單地做這樣的事情：

secView.imgView.image = selectedImage.image; 

設置我的UIImageView在第二視圖是從我的UIImageView ... 圖像但在第二視圖僅僅是空的UIImageView ...

我代碼是...

個

ViewController.h：

@interface ViewController : UIViewController <UINavigationControllerDelegate, UIImagePickerControllerDelegate> 
{ 
    UIImagePickerController *picker; 
    IBOutlet UIImageView *selectedImage; 

    SecondView *secondView; 
} 

@property (nonatomic, retain) UIImageView *selectedImage; 
@property (nonatomic, retain) SecondView *secondView; 

-(IBAction)sendImage:(id)sender; 
-(IBAction)openGallery:(id)sender; 

@end 

ViewController.m（僅相關部分）

-(IBAction)sendImage:(id)sender 
{ 
    if(self.secondView == nil) 
    { 
     SecondView *secView = [[SecondView alloc] initWithNibName:@"SecondView" bundle:[NSBundle mainBundle]]; 

     self.secondView = secView; 

     secView.imgView.image = selectedImage.image; 
    } 

    [self.navigationController pushViewController:secondView animated:YES]; 
} 

-(IBAction)openGallery:(id)sender 
{ 
    picker = [[UIImagePickerController alloc] init]; 

    picker.delegate = self; 

    picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; 

    [self presentModalViewController:picker animated:YES]; 
} 

-(void)imagePickerControllerDidCancel:(UIImagePickerController *) Picker 
{  
    [Picker dismissModalViewControllerAnimated:YES];  
} 

- (void)imagePickerController:(UIImagePickerController *) Picker 

didFinishPickingMediaWithInfo:(NSDictionary *)info 
{  
    // Save the image 
    selectedImage.image = [info objectForKey:UIImagePickerControllerOriginalImage]; 

    [Picker dismissModalViewControllerAnimated:YES]; 
} 

在另一個崗位，我讀了另一種方法是做到這一點：

-(IBAction)sendImage:(id)sender 
{ 
    if(self.secondView == nil) 
    { 
     SecondView *secView = [[SecondView alloc] initWithNibName:@"SecondView" bundle:[NSBundle mainBundle]]; 

     self.secondView = secView; 

     [secView setImage:selectedImage.image]; 
    } 

    [self.navigationController pushViewController:secondView animated:YES]; 
} 

然後在secondview.h中

-(void)setImage:(UIImage *)image; 

和.M

-(void)setImage:(UIImage *)image 
{ 
    [imgView setImage:image]; 
} 

但這兩種方法會導致一個空的UIImageView ... 那麼，什麼是正確的方法來這樣做呢？

在此先感謝！

編輯

SecondView當時是相當簡單的...（在發佈代碼中，我嘗試並按照方法2）

@interface SecondView : UIViewController 
{ 
    UIImageView *imgView; 
} 

@property (nonatomic, retain) IBOutlet UIImageView *imgView; 

-(void)setImage:(UIImage *)image; 

@end 

@implementation SecondView 

@synthesize imgView; 

-(void)setImage:(UIImage *)image 
{ 
    [imgView setImage:image]; 
} 

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil 
{ 
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]; 
    if (self) { 
     // Custom initialization 
    } 
    return self; 
} 

- (void)didReceiveMemoryWarning 
{ 
    // Releases the view if it doesn't have a superview. 
    [super didReceiveMemoryWarning]; 

    // Release any cached data, images, etc that aren't in use. 
} 

#pragma mark - View lifecycle 

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

- (void)viewDidUnload 
{ 
    [super viewDidUnload]; 
    // Release any retained subviews of the main view. 
    // e.g. self.myOutlet = nil; 
} 

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation 
{ 
    // Return YES for supported orientations 
    return (interfaceOrientation == UIInterfaceOrientationPortrait); 
} 

@end 

SOLUTION 好了...回去到第一種方法，並做了一些最終工作的改變......

-(IBAction)sendImage:(id)sender 
{ 
    if(self.secondView == nil) 
    { 
     SecondView *secView = [[SecondView alloc] initWithNibName:@"SecondView" bundle:[NSBundle mainBundle]]; 

     self.secondView = secView; 

     secView.theImage = selectedImage.image; 
    } 

    [self.navigationController pushViewController:secondView animated:YES]; 
} 

而在第二個視圖中，我創建了UIImage * theImage - 然後我設置了[imgView setImage：theImage];在viewDidLoad中，它的工作...

Answer 1

這解決了這個問題：

-(IBAction)sendImage:(id)sender 
{ 
    if(self.secondView == nil) 
    { 
     SecondView *secView = [[SecondView alloc] initWithNibName:@"SecondView" bundle:[NSBundle mainBundle]]; 

     self.secondView = secView; 

     secView.theImage = selectedImage.image; 
    } 

    [self.navigationController pushViewController:secondView animated:YES]; 
} 

SecondView：

@interface SecondView : UIViewController 
{ 
    UIImageView *imgView; 
    UIImage *theImage; 
} 

@property (nonatomic, retain) IBOutlet UIImageView *imgView; 
@property (nonatomic, retain) UIImage *theImage; 

-(void)setImage:(UIImage *)image; 

@end 

和secondView的.M：

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    // Do any additional setup after loading the view from its nib. 
    [imgView setImage:theImage]; 
} 

Answer 2

我想我找到了問題：

在你的類secondView，你的UIImageView沒有連接到筆尖文件對象的UIImageView。

你應該有這樣的事情：

IBOutlet UIImageView *imgView; 

要檢查視圖是否正確連接到筆尖，你可以這樣做：

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil 
{ 
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]; 
    if (self) { 
     // Custom initialization 
     [imgView setBackgroundColor:[UIColor redColor]]; 
    } 
    return self; 
} 

你的問題是有趣的，請讓我知道如果它不起作用我會更深入地檢查。

Answer 3

//首先視圖控制器： - （空） passimage {

Second_ViewController *select_main =[[UIStoryboard storyboardWithName:@"Main" bundle:nil]instantiateViewControllerWithIdentifier:@"Second_ViewController"]; 
    select_main.tt_image=_bg_imageview.image; 
    [[self navigationController] pushViewController:select_main animated:YES]; 

}

//第二視圖控制器傳遞UIImage對象：

• （無效）viewDidLoad中{

  _bg_imageview.image = _bb_image; }