How do I get those small views from the bottom to appear in iOS SDK?

I'n talking about the small windows with buttons that come from the bottom when you need to confirm some action. For example, if you want to delete a photo from an album and press the trash icon, a small view jumps from the bottom and asks if you want to delete the photo or cancel

How do I get those views to appear?

Use a UIActionSheet.

UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"Some Action"
                                           delegate:self 
                                  cancelButtonTitle:@"Cancel"
                             destructiveButtonTitle:@"OK"
                                  otherButtonTitles: nil];

actionSheet.actionSheetStyle = UIActionSheetStyleDefault;
[actionSheet showInView:self.view];
[actionSheet release];

You'll want to look at the UIActionSheet object: http://developer.apple.com/library/ios/#documentation/uikit/reference/UIActionSheet_Class/Reference/Reference.html

An example here: http://ykyuen.wordpress.com/2010/04/14/iphone-uiactionsheet-example/