Changing progress bar color using XML in Android app

Question

I\'m trying to change the color of a horizontal progress bar (foreground). I came across this example and am trying to model my XML file off it. However, I get a compiler erro

Answer 1

The R class is generated by Android compiler, all fields of the inner class in R.java refer to the resources in res folder by android:id xml attribute. The Resouce class can retrieve the resource object by using the resource id. So, you can get Drawable object through Resource.getDrawable(int).