I've been working on my app but I've only been testing it using API23.
Today I tried it on API21 and the backgroundTint is ignored and/or removed while the app is running.
I will try to explain properly:
I have a radio button group (with 2 radio buttons) that switch the enable/disable state and backgroundTint for 2 boxes at time.
I'm doing this because I'm forcing the user to input data on 2 boxes at time (this is basically a converter).
When I'm using the 2 boxes on the left, the 2 boxes on the right are grey and disabled, and vice versa.
This works perfectly using API23, but today I wanted to try it on API21 and basically the grey colors from the boxes disappear.
I tried many things and none worked so far.
Anyone can help ?
I'll use some pics to show what I mean
Pics on the left is it working properly on API23, and on the right is it not working on API23.
Sorry I had to remove the text from the app.