I recently came across a fascinating feature in some applications.
The feature involves an image with the letter A positioned in a specific area. As I scroll up, the label containing the letter A moves upward until it reaches the top of the screen. At that point, it remains fixed in place while the rest of the content scrolls underneath it. The next label, labeled B, then starts scrolling upwards, causing label A to move out of view and be replaced by B.
https://i.sstatic.net/5nxVh.jpg
https://i.sstatic.net/dd8gF.jpg
https://i.sstatic.net/vIMZt.jpg
https://i.sstatic.net/IMvWs.jpg
https://i.sstatic.net/G8YAo.jpg
If you know how to achieve this effect using appcelerator studio with JavaScript, please share your insights!