In case you missed cool feature of ADT v.17
“Added a feature that allows you to run some code only in debug mode. Builds now generate a class called BuildConfig containing a DEBUG constant that is automatically set according to your build type. You can check the (BuildConfig.DEBUG) constant in your code to run debug-only functions such as outputting debug logs.”
Can help a lot:) Everybody forgets to disable debug in release at least one time in life.