What you need requires reverse engineering, or something really unworthy; idiotic. If that is your own application, why cannot you edit the source code that you wrote for it? It is very careless of yours to lose the source code!
If you don't have the source code (and you own the application; you wrote it) you can try to decompile it, get the disassembly for that application.
There are a few threads to some useful programs that convert the APKs to Java source code for the application:
1.
http://stackoverflow.com/questions/1249973/decompiling-dex-into-java-sourcecode[
^]
2.
http://forum.xda-developers.com/showthread.php?t=873466[
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3.
http://code.google.com/p/dex2jar/wiki/ModifyApkWithDexTool[
^] (
Do give this one a look)
One thing, if that is not your application, do not consider applying reverse engineering to it. You can create a similar application yourself! By writing the Java code, rather than crafting it back from the binary.
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