why i get Some file crunching failed after i rename drawable file to .9.png?

Question

I am testing 9-patch image .
Before everything works fine , and i rename drawable file ic_button_beat_box_default.png to ic_button_beat_box_d

Answer 1

What solved it for me was to set

aaptOptions {  
    cruncherEnabled = false  
}

Then to run the app (icons were missing) then remove this option and run the app again. Hope it helps somebody.