When starting item selection in EditDecActivty, each item should become grey. But this behaviour happens only from the second item. I tried to implement the code in the Adapter of EditDecActivity, but I only was able to reach a partial result.
We can try to investigate further or see if there is a library that does the "dirty" work (such as : https://github.com/davideas/FlipView)
The setTint method works only for api > 21. For api < 21 I tried with setColorFilter but It seems to set only the color of the letter.So I tried to extend TextDrawable class in ordet to implement a method that would allow me to solve the problem, but the TextDrawable Class defined by the author doesn't permit any forms of extension by others.