How to set dropdown arrow in spinner?

Question

I tried to set spinner with drop down arrow but i couldn\'t fix it can anyone help me with this? I have attached the source code.

my class file:

Answer 1

Basically one needs to create a custom background for a spinner. It should be something like this:

spinner_background.xml

Then create a custom style for your spinner, where you specify the above selector as background:

And finally in your app theme you should override two attributes if you want it to be applied all across your app:

@style/Widget.App.Spinner
@style/Widget.App.Spinner

And that's pretty much it.