Passing image between view controllers [duplicate] - ios

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Passing data between view controllers
(45 answers)
Closed 7 years ago.
I read much posts about this question but I don't found any answers..
so, I want to pass from my "ViewController" to my "SecondViewController" an image picked from ImagePicker, this is what I tried:
In my ViewController:
-(IBAction)Scatta:(id)sender {
UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
[imagePickerController setSourceType:UIImagePickerControllerSourceTypeCamera];
}
// image picker needs a delegate
[imagePickerController setDelegate:self];
// Place image picker on the screen
[self presentViewController:imagePickerController animated:YES completion:nil];
// Create main view controller
Main_VCViewController *VC = [self.storyboard instantiateViewControllerWithIdentifier:#"Main"];
// Go to main
[self presentModalViewController:VC animated:YES];
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
[self dismissViewControllerAnimated:YES completion:^{
UIImage *image = [info objectForKey:UIImagePickerControllerEditedImage];
Main_VCViewController *VC = [self.storyboard instantiateViewControllerWithIdentifier:#"Main"];
VC.ImmaginePresa = image;
[self presentModalViewController:VC animated:YES];
}];
}
and this is my SecondViewController :
-(void)viewDidAppear:(BOOL)animated {
UIImage *imm = _ImmaginePresa;
[_Image setImage: imm];
}
I set a default image in my SecondVC and when I launch the app I press the "Scatta" button and when it opens my SecondVC it shows me for 0.5/1 second my default image, and after that, it shows nothing.
I tried to pass in the same way some strings and it works correctly.
EDIT1
ViewController:
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
UIImage *img = [info objectForKey:UIImagePickerControllerOriginalImage];
//Instanzio il viewController della main
Main_VCViewController *VC = [self.storyboard instantiateViewControllerWithIdentifier:#"Main"];
NSData *imageData = UIImagePNGRepresentation(img.images);
[[NSUserDefaults standardUserDefaults] setObject:[NSKeyedArchiver archivedDataWithRootObject:imageData] forKey:#"ImageData"];
VC.ImmaginePresa = img;
[self dismissModalViewControllerAnimated:YES];
//Vado alla main
[self presentModalViewController:VC animated:YES];
}
SecondVC:
-(void)viewDidAppear:(BOOL)animated {
NSData* myEncodedImageData =[[NSUserDefaults standardUserDefaults]objectForKey:#"ImageData"];
UIImage* image = [UIImage imageWithData:myEncodedImageData];
[_Image setImage: image];
}
It still doesn't work, same result
EDIT2
With #SaurabhPrajapati 's solution it seems like the image is nil, because when i click on my image it doesn't do anything is it possible?

Answer 1

I assume that you are getting image in "didFinishPickingMediaWithInfo". so here is my suggestion
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
UIImage *image = [info objectForKey:UIImagePickerControllerEditedImage];
if(image != nil)
{
[self dismissViewControllerAnimated:YES completion:^{
//define ImmaginePresa as NSData in Main_VCViewController
Main_VCViewController *VC = [self.storyboard instantiateViewControllerWithIdentifier:#"Main"];
VC.ImmaginePresa = UIImagePNGRepresentation(image);
[self presentModalViewController:VC animated:YES];
}];
}
}
and in Main_VCViewController you can get image like ,
UIImage *img = [UIImage imageWithData:self.ImmaginePresa];