UICollectionView scrolling is slow

Question

I have just created a UICollectionView in which The user can add images from their phone to the photo album feature in the app. I have the images save to the a

Answer 1

You will need to make a approach like the one you need to do in the tableviews, you will need to reuse the views, like you reuse yours cells in table view.

A really good tutorial is this one from Ray Wenderlich:

In the first part you have the basic, in the second one they talk about the reusable views, you, take a look at the link:

http://www.raywenderlich.com/22417/beginning-uicollectionview-in-ios-6-part-22

Edit

Example to load images async:

Create at your cell a method loadImageFromFile for example, that receives the path you will cal it this way:

[cell loadImageFromFile:[recipePhotos objectAtIndex:index]];

And then will look like (maybe you need to adapt something ...):

- (void) loadImageFromFile:(NSString*)path{
    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, NULL), ^{
        NSData *data= [NSData dataWithContentsOfFile:path];
        UIImage *theImage=[UIImage imageWithData:data];

        dispatch_async(dispatch_get_main_queue(), ^{
            cell.imageView.image=theImage;
    });
});