Question

I am trying to apply background color to button dynamically using color id in color resource file(color.xml).

btn.setBackgroundColor(R.color.green);

i also tried this

btn.setBackgroundColor(Resources.getSystem().getColor(R.color.green));

but its not working.

if i apply

btn.setBackgroundColor(Color.Green);

Its working.

But i need to apply color resource from color.xml file. Please let me know how i can do it.

Answer 1

You should use this:

btn.setBackgroundColor(getResources().getColor(R.color.Green));

and second way:

Resources resources = YourActivity.this.getResources();  
Drawable drawable = resources.getDrawable(R.color.Green);
btn.setBackgroundDrawable(drawable);

your color.xml look like:

 <?xml version="1.0" encoding="utf-8"?>  
    <resources>  
        <drawable name="red">#f00</drawable>  
        <drawable name="green">#0f0</drawable>  
        <drawable name="gray">#ccc</drawable>  
    </resources>  

**EDIT
Now that getColor() is deprecated :

ContextCompat.getColor(context, R.color.color_name)