saving a photo to an NSMutableDictionary in iPhone app

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• teCma Posts: 255Registered Users

  February 2012

  gbenna;410836 said:

  I have an app which has a MainViewController (MVC) and a DetailViewController (DVC).
  
  From the MVC I use an NSMutableDictionary to load an image view and a text view in the DVC depending on which image in the MVC is tapped (kind of like a tableview. I also have an empty UIImageView in the DVC.
  
  Inside the DVC I have a button to open the camera. i can take a photo and save it to the app's documents folder and it shows up in the empty UIImageView. However when I return to the MVC and go back to the same called DVC where the photo was displayed it is no longer displayed even though I know it has been saved into the documents. If I tap on a different image in the MVC and open a different DVC grouping I can take a photo but the problem is I don't know how to progressively name the saved images.
  
  What I would like to do is have the photo taken in DVC #1 be saved as image #1 and show up every time I open DVC #1 and then when I open DVC #1 and take a photo it is saved as image #2 and stays displayed in it and so forth and so on. First off is this possible? And admitting that I am rather new to coding and I think here way over my head could someone help me accomplish this.
  
  Here is my code for the MVC :
  
  
  

  - (void) coverflowView:(TKCoverflowView*)coverflowView coverAtIndexWasDoubleTapped:(int)index{
      
   	SomeDetailViewController *detailViewController = [[SomeDetailViewController alloc] initWithNibName:@\"SomeDetailViewController\" bundle:nil];
       
      if ((int)index == 0) {
          NSMutableDictionary *myDictionary = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                          @\"0002.jpg\", @\"imagekey\",
                          @\"This is #1\", @\"textkey\", 
                         
                          
          NSLog(@\"%@\", [myDictionary objectForKey:@\"imagekey\"]);
          NSLog(@\"%@\", [myDictionary objectForKey:@\"textkey\"]);
           detailViewController.myDictionary = myDictionary;
      }
      
      else if ((int)index == 1) {
          NSMutableDictionary *myDictionary = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                               @\"0003.jpg\", @\"imagekey\",
                                               @\"This is #2\", @\"textkey\", 
          
          NSLog(@\"%@\", [myDictionary objectForKey:@\"imagekey\"]);
          NSLog(@\"%@\", [myDictionary objectForKey:@\"textkey\"]);
          detailViewController.myDictionary = myDictionary;
      }
  
      
      
            [self.navigationController pushViewController:detailViewController animated:YES];
      
         
  }
  
  and here is my DVC:
  
  
  - (void)viewDidLoad {
    
      [super viewDidLoad];
       imageView .image = [[UIImage alloc] init];
      self.imageView.image =[UIImage imageNamed:[(NSMutableDictionary *)myDictionary objectForKey:@\"imagekey\"]];
      
      self.myText.text =[(NSMutableDictionary *)myDictionary objectForKey:@\"textkey\"];
      
      NSLog(@\"%@\", [myDictionary objectForKey:@\"imagekey\"]);
      NSLog(@\"%@\", [myDictionary objectForKey:@\"textkey\"]);
  
     }
  
  
  -(IBAction)getPhoto:(id)sender
  {
      UIImagePickerController *picker = [[UIImagePickerController alloc] init];
      picker.delegate = self;
      picker.sourceType =  UIImagePickerControllerSourceTypeCamera ;
      [self presentModalViewController: picker animated:YES];
     
  }
  
  -(void)imagePickerControllerDidCancel:(UIImagePickerController *)  picker
  {
      [picker dismissModalViewControllerAnimated:YES];
  }
  
  - (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
  {
          UIImage *image = [info objectForKey:@\"UIImagePickerControllerOriginalImage\"];
    
  //this is where I declare the name and directory for the photo
    
      NSString *pngPath = [NSHomeDirectory() stringByAppendingPathComponent:@\"Documents/Test.png\"];
      // Access the uncropped image from info dictionary
     
      NSError *error;
     //try this to documents
      [UIImagePNGRepresentation(image) writeToFile:pngPath atomically:YES];
      
     
      NSFileManager *fileMgr = [NSFileManager defaultManager];
      
      NSString *documentsDirectory = [NSHomeDirectory() stringByAppendingPathComponent:@\"Documents\"];
      
       NSLog(@\"Documents directory: %@\", [fileMgr contentsOfDirectoryAtPath:documentsDirectory error:&error]);
      
      
      UIAlertView *alert;
      
  	// Unable to save the image  
      if (error)
          alert = [[UIAlertView alloc] initWithTitle:@\"Error\" 
                                             message:@\"Unable to save image to Documents.\" 
                                            delegate:self cancelButtonTitle:@\"Ok\" 
                                   otherButtonTitles:nil];
  	else // All is well
          alert = [[UIAlertView alloc] initWithTitle:@\"Success\" 
                                             message:@\"Image saved to Documents.\" 
                                            delegate:self cancelButtonTitle:@\"Ok\" 
                                   otherButtonTitles:nil];
      
      [alert show];
  
  //this is the view where the photo is shown in the DVC
  
      photoView.image = image;
      
      [self dismissModalViewControllerAnimated:YES];
  
  }

  Use code tags - please.

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• gbenna Posts: 99Registered Users

  February 2012

  teCma;410975 said:

  Use code tags - please.

  First off I tried saving as a jpg but it didn't matter.
  
  What I have done is create a variable in my NSDictionary which is the path for the saved photo @"Documents/photoname.jpg". This insures that the name of the photo in each different incarnation of the DVC will save a photo that is specific to that DVC. I then created another UIImageView in the DVC which I then load from the MVC's NSDictionary using the name of the photo I took from that DVC. I know that the photo is being saved into the Documents directory with the desired name because when I use NSLog it shows that that photo name is in the directory. And I know it is being loaded from the MVC into the DVC because of NSLog on both view controllers. However The view doesn't show up in the specified UIImage View. I know that the UIImageView is connected up correctly because if I call another key for the object it works.
  The only thing I can think is that I am not calling the saved photo correctly from the Documents Directory into the NSMutableDictionary or the photo is not being saved as an image. Is there a way I can check this?
  
  Since most of the images I am calling in the NSMutableDictionary are from the main bundle of the app do I need to do something to put things from the Documents directory into the main bundle or is there a different way to call images saved in the Documents Directory.
  
  Here is my added code.
  
  this is put into my MVC's NSMutableDicationary
  
  @"camera image 1.jpg", @"photoImage",
  @"Documents/camera image 1.jpg", @"photokey",nil];
  
  This was added to the DVC's ViewDidLoad
  
  photoView2 .image = [[UIImage alloc] init];
  self.photoView2.image =[UIImage imageNamed:[(NSMutableDictionary *)myDictionary objectForKey:@"photoImage"]];
  
  and this I put in my DVC's image pickers code
  
  NSString *pngPath = [NSHomeDirectory() stringByAppendingPathComponent:[(NSMutableDictionary *)myDictionary objectForKey:@"photokey"]];
  
  and ideas are very much appreciated.
  
  One more thing when I take the picture and save it it does show up as a preview and it does day it is saved in the documents directory.

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• teCma Posts: 255Registered Users

  February 2012

  gbenna;411182 said:

  First off I tried saving as a jpg but it didn't matter.
  
  What I have done is create a variable in my NSDictionary which is the path for the saved photo @"Documents/photoname.jpg". This insures that the name of the photo in each different incarnation of the DVC will save a photo that is specific to that DVC. I then created another UIImageView in the DVC which I then load from the MVC's NSDictionary using the name of the photo I took from that DVC. I know that the photo is being saved into the Documents directory with the desired name because when I use NSLog it shows that that photo name is in the directory. And I know it is being loaded from the MVC into the DVC because of NSLog on both view controllers. However The view doesn't show up in the specified UIImage View. I know that the UIImageView is connected up correctly because if I call another key for the object it works.
  The only thing I can think is that I am not calling the saved photo correctly from the Documents Directory into the NSMutableDictionary or the photo is not being saved as an image. Is there a way I can check this?
  
  Since most of the images I am calling in the NSMutableDictionary are from the main bundle of the app do I need to do something to put things from the Documents directory into the main bundle or is there a different way to call images saved in the Documents Directory.
  
  Here is my added code.
  
  this is put into my MVC's NSMutableDicationary
  
  @"camera image 1.jpg", @"photoImage",
  @"Documents/camera image 1.jpg", @"photokey",nil];
  
  This was added to the DVC's ViewDidLoad
  
  photoView2 .image = [[UIImage alloc] init];
  self.photoView2.image =[UIImage imageNamed:[(NSMutableDictionary *)myDictionary objectForKey:@"photoImage"]];
  
  and this I put in my DVC's image pickers code
  
  NSString *pngPath = [NSHomeDirectory() stringByAppendingPathComponent:[(NSMutableDictionary *)myDictionary objectForKey:@"photokey"]];
  
  and ideas are very much appreciated.
  
  One more thing when I take the picture and save it it does show up as a preview and it does day it is saved in the documents directory.

  Dude. I didn't mean comments. When you are typing code in this forum use the available code tags to make the code easier to read.

  Check out my apps here!

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