Save image to Documents directory than load it into UIImageView - ios

Question

I have been trying to solve this issue since days. I have an app where the user selects an image than the selected image is saved to the disk and later loaded into a UIImageView, however this does not work, no matter what I try. i have made a small app just to test this, and it does not work there either. The imageView stays blank. Here is my code:
#implementation ViewController
- (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.
}
- (IBAction)button:(id)sender {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.allowsEditing = NO;
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[self presentViewController:picker animated:YES completion:nil];
}
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{
UIImage *selectedImage = info[UIImagePickerControllerOriginalImage];
[self saveImage:selectedImage];
self.imageView.image = [self loadImage];
[picker dismissViewControllerAnimated:YES completion:NULL];
}
- (void)saveImage: (UIImage*)image
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString* path = [documentsDirectory stringByAppendingPathComponent:
#"image.png" ];
NSData* data = UIImagePNGRepresentation(image);
[data writeToFile:path atomically:YES];
}
- (UIImage*)loadImage
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString* path = [documentsDirectory stringByAppendingPathComponent:
#"image.png" ];
UIImage* image = [UIImage imageWithContentsOfFile:path];
return image;
}
#end
What am I doing wrong?

Answer 1

You just need to add the delegate of the UIImagePickerController so that following code solve you problem.
- (IBAction)button:(id)sender {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.allowsEditing = NO;
picker.delegate = self;
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[self presentViewController:picker animated:YES completion:nil];
}
Now, In .h file use following code.
#import <UIKit/UIKit.h>
#interface ViewController : UIViewController<UINavigationControllerDelegate,UIImagePickerControllerDelegate>
#property(nonatomic,weak)IBOutlet UIImageView *imageView;
#end