
Procedure for decoding .apk files, step-by-step method:
Step 1:
Make a new folder and put .apk file in it (which you want to decode). Now rename the extension of this .apk file to .zip (eg.: rename from filename.apk to filename.zip) and save it. Now you get classes.dex files, etc. At this stage you are able to see drawable but not xml and java files, so continue.
Step 2:
Now extract this zip apk file in the same folder (or NEW FOLDER)....