How to update sdk android using notepad++

Question

最近，我从Google收到一条消息，我应该更新我的apk的sdk，不幸的是我丢失了我的代码源，我只有apk，所以我正在使用apktool来更改特定的内容，但是我不知道如何使用以下方式更新SDK NOTEPAD ++

Answer 1

You can't change just de SDK. You need to change de SDK in your app and then compile the app and probably update the libraries, so... even you change code lines you need to compile the project, change the version and signed the new APK.