(16. Realizing the Stopwatch Function 4. Please download all the contents of this video tutorial in the special topic, and update a lot of other tutorials such as massive software development, function optimization, and network development. You can click My User Name to check all the resources I have published
16. Realization of stopwatch function 4 - "Android multi-function clock project development - produced by Geek Academy" course - Geek Academy. mp4
.....)