Android ProgressBar subclass with a custom foreground color

ProgressBar.java

package com.yourkarma.android.ui.components;

import android.content.Context;
import android.graphics.Color;
import android.graphics.PorterDuff;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;

public class ProgressBar extends android.widget.ProgressBar {

    public ProgressBar(Context context) {
        super(context);
        init();
    }

    public ProgressBar(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public ProgressBar(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        init();
    }

    private void init() {
        Drawable drawable = getIndeterminateDrawable();
        if (drawable != null) {
            drawable.setColorFilter(Color.WHITE, PorterDuff.Mode.SRC_IN);
        }
    }
}