How to implement cutter mp3 functionality in android application?

Question

Java

Hi all.
I need your help.
Situation:
there was a need to make the functionality of trimming mp3 files, i.e. create ringtones within the android application. A search on the Internet showed that the result should be something like a cutter mp3, trimming mp3, etc. While I see that the application should display the selected mp3 in the form of a simple bar, a play button, a pause button, a transition to the beginning, two sliders - the beginning and the end, the "rename" field and the "save" button - the design is not important.
Question:
tell me, who faced a similar task, what documentation, theory, literature to read in order to get into this topic, what kind of business logic should be included in such functionality? Thank you.

Answer 1

Is it hard to open a github, type "mp3 cut" and hit the filter for "java"? There you will immediately have a dozen implementations and see how and what who did.
In addition, you do not have a question, but in fact a task in which you want everything to be chewed out for you.
If you delve even deeper, then you did not even try to use the search for a toaster and suddenly discover that such a question has already been and it has been resolved.