I was going through the Stack Overflow question decompiling DEX into Java sourcecode. I was successfully able to decompile the apk file, and I made some changes in the Java code.
I converted them successfully to smali files so that apktool can repack the app. But it gave me undefined kind of errors. I used a Hello, World! example for time being.
Is it possible? Or did I go somewhere wrong? Is there any alternate method is possible for it?