PHFetchOptions mediaSubtype predicate

Question

Following predicate should fetch all the screenshots only, which work just fine.

options.predicate = [NSPredicate predicateWithFormat:@"(mediaSubtype & %d) != 0", PHAssetMediaSubtypePhotoScreenshot];

However if I try to exclude screenshots only by using follwing predicate, all of the images are excluded

options.predicate = [NSPredicate predicateWithFormat:@"(mediaSubtype & %d) = 0", PHAssetMediaSubtypePhotoScreenshot];    

All Im trying to do is to exlude screeshots from asset fetch.

Is this known bug or am I missing something ?

Answer 1

I made a quick check and this seems to work for me:

 PHFetchOptions *options = [[PHFetchOptions alloc] init];
 options.predicate = [NSPredicate predicateWithFormat:@"(mediaSubtype & %d) == 0", PHAssetMediaSubtypePhotoScreenshot];

Note the double equal in the predicate to do the comparison instead of the single one.