UIImagePickerController's object in NSMutableArray

Question

I need to add objects selected by UIImagePickerController into an NSMutabeArray, the code goes as:

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {

    [picker dismissModalViewControllerAnimated:YES];

    if(![imagesArray containsObject:[info objectForKey:@"UIImagePickerControllerOriginalImage"]])
        {
        [imagesArray addObject:[info objectForKey:@"UIImagePickerControllerOriginalImage"]];

        } 
    else {
           //some procedures
            }
}

The problem is that it always fells into the if block and never executes the else block when picking same images repeatedly. Any clue over this would be appreciated.

score 1 · Accepted Answer · edited May 23 '17 at 09:58

1

I think your problem is that two instances of UIImage can't be compared using isEqual:, which containsObject: is using, even if they point to the same image file. I don't know how to compare two UIImage but you can perhaps look at Generate hash from UIImage or search for "comparing UIImage".

edited May 23 '17 at 09:58

Community

1
1

answered Nov 04 '10 at 19:19

Robert Höglund

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Thank you. i solved it using the 'less than optimal solution' in your provided url. Thanks alot for the help. – Syed Absar Nov 05 '10 at 07:03

score 0 · Answer 2 · answered Nov 04 '10 at 08:37

0

Check by casting. Add it in this way:

UIImage *img =[info objectForKey:@"UIImagePickerControllerOriginalImage"];
if(![imagesArray containsObject:img])
 [imagesArray addObject:img];

answered Nov 04 '10 at 08:37

Vaishnavi Naidu

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UIImagePickerController's object in NSMutableArray

2 Answers2