Save image from scrollview to photo album - iphone

Question

How to save image from scrollview to photalbum when i m using
NSString *imageName = [NSString stringWithFormat:#"image%d.png", i];
UIImage *image = [UIImage imageNamed:imageName];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
in scrollview to display image view.
UIScrollView *imageScrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
imageScrollView.pagingEnabled = YES;
NSInteger numberOfViews = 61;
for (int i = 0; i < numberOfViews; i++) {
CGFloat xOrigin = i * self.view.frame.size.width;
NSString *imageName = [NSString stringWithFormat:#"image%d.png", i];
UIImage *image = [UIImage imageNamed:imageName];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
imageView.frame = CGRectMake(xOrigin, 0, self.view.frame.size.width, self.view.frame.size.height);
-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
switch (buttonIndex) {
case 0:
UIImageWriteToSavedPhotosAlbum(_imageScrollView._image, self, nil, nil);
break;
default:
break;
}
}
Getting message in red on statement
UIImageWriteToSavedPhotosAlbum(_imageScrollView._image, self, nil, nil);
that property _image not found on object of type uiscrollview.
Thanks for help.

Answer 1

You can hang on to the image with a separate pointer, or if the scroll view is the only pointer to it, you can find it with a tag:
// right after
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
// give it a tag
imageView.tag = 128; // any int that is unique relative to other tags in the scroll view
// find it with the tag...
case 0:
UIImageView *imageView = (UIImageView *)[imageScrollView viewWithTag:128];
UIImageWriteToSavedPhotosAlbum(imageView.image, self, nil, nil);
// notice, there's also no property called _image on an imageView