How to change data in apk file?

Question

Java

Good! there is an apk application, in it, in the classes.dex file, there is one line that I need to replace, how can I do this? I tried using notepad++ and then throwing the file back into the archive, the application died. can you tell me how to check this? thank!

Answer 1

There are a lot of articles on the Internet on how to decompile an apk file, then change the line and build it back. There is a good article in "Hacker" magazine https://xakep.ru/2013/10/22/modify-and-packing-and...

Answer 2

Take the source, correct the desired file and rebuild the apk.