So far, our Filer app can only handle one kind of note: a text note. In this project, we'll expand its capabilities to include audio recordings as well as text notes. We'll include both recording and playback.

We'll also work with gestures and animations in our app so our app will start to feel more native. We'll specifically talk about fast clicks (a way to respond to touch events as they occur), and we'll implement the common swipe-to-delete gesture so that the user can delete notes in the note list view. We'll also talk about how to animate the appearance and disappearance of views and the animation of the swipe-to-delete gesture.

If you're not familiar with the swipe-to-delete gesture, a user can swipe in a certain direction (usually right-to-left) on a table cell in order to tell the app they'd like to delete the row. A delete or trash button appears, which they can then tap to finalize the operation. The following image should help you see what happens: