How can I get color-int from color resource?

Question

Is there any way to get a color-int from a color resource?

I am trying to get the individual red, blue and green components of a color defined in the resource (R.color.myColor) so that I can set the values of three seekbars to a specific level.

Answer 1

You can use:

getResources().getColor(R.color.idname); 

Check here on how to define custom colors:

http://sree.cc/google/android/defining-custom-colors-using-xml-in-android

EDIT(1): Since getColor(int id) is deprecated now, this must be used :

ContextCompat.getColor(context, R.color.your_color); 

(added in support library 23)

EDIT(2):

Below code can be used for both pre and post Marshmallow (API 23)

ResourcesCompat.getColor(getResources(), R.color.your_color, null); //without theme  ResourcesCompat.getColor(getResources(), R.color.your_color, your_theme); //with theme 

Answer 2

Based on the new Android Support Library (and this update), now you should call:

ContextCompat.getColor(context, R.color.name.color); 

According to the documentation:

public int getColor (int id) 

This method was deprecated in API level 23. Use getColor(int, Theme) instead

It is the same solution for getResources().getColorStateList(id):

You have to change it like this:

ContextCompat.getColorStateList(getContext(),id); 

EDIT 2019

Regarding ThemeOverlay use the context of the closest view:

val color = ContextCompat.getColor(   closestView.context,   R.color.name.color ) 

So this way you get the right color based on your ThemeOverlay.

Specially needed when in same activity you use different themes, like dark/light theme. If you would like to understand more about Themes and Styles this talk is suggested: Developing Themes with Style