Recompile a apk file

Question

I was tried to Recompile an app file (apk).

I decompile the apk file with apktool (2.3.1), and dex2jar(2.0), now I have .java file (from the dex2jar), and I don't know how to recompile it,

apktool error:

W: Unknown file type, ignoring: (files).java 

Answer 1

A similar question has already been answered: Decompile an APK, modify it and then recompile it

To summarize, you must create a new Eclipse or AndroidStudio project containing your decompiled java source files and compile the project to get a new apk file that can be installed on your android device.