How to avoid reverse engineering of an APK file?

Question

I am developing a payment processing app for Android, and I want to prevent a hacker from accessing any resources, assets or source code from the APK file.<

Answer 1

100% security of the source code and resources is not possible in Android. But, you can make little bit difficult for the reverse engineer. You can find more details on this in below links:

Visit Saving constant values securely and https://www.agicent.com/blog/mobile-app-security-best-practices/