Question

I am trying to use this method to show a second modal after a first modal has been dismissed… The method itself works fine, except that it requires me to pass an object as a parameter and what I really want to do is pass a UIImageControllerSourceType instead. Is there another method I should be using to do this or is there an easy way to make UIImageControllerSourceType an object? I feel like this should not be too hard but I have been struggling with it for awhile now…

- (void)showModalTwoImageSearchViewControllerWithSourceType:(UIImagePickerControllerSourceType *)sourceType {

if (self.modalViewController) {        
    [self performSelector:@selector(showModalTwoImageSearchViewControllerWithSourceType:)
               withObject:sourceType
               afterDelay:0.1f];
    return;
}
// present second modal view - remembering to deal with cases of camera or photo library
if (sourceType == UIImagePickerControllerSourceTypePhotoLibrary) {
    //do one thing
}
// lets assume it was UIImagePickerControllerSourceTypeCamera
else {
    // do something else
}

}

Answer 1

UIImagePickerControllerSourceType is ultimately a NSUInteger and the method you’re trying to do (the performSelector one) only takes Objective C objects in its withObject parameter and not C types or pointers.

You can pass NSUIntegers by creating a NSNumber object and stuffing your integer into that.

To create a NSNumber object, you can create one as easily as NSNumber‘s numberWithUnsignedInteger method.