Add counter to any icon

IconCounterUtils.java

public class IconCounterUtils {
    public static void setCounterValue(Context mContext, LayerDrawable icon, int count) {
        CounterDrawable mCounterDrawable;

        Drawable reuse = icon.findDrawableByLayerId(R.id.ic_counter);
        if (reuse != null && reuse instanceof CounterDrawable) {
            mCounterDrawable = (CounterDrawable) reuse;
        } else {
            mCounterDrawable = new CounterDrawable(mContext);
        }

        mCounterDrawable.setCounterValue(count);
        icon.mutate();
        icon.setDrawableByLayerId(R.id.ic_counter, mCounterDrawable);
    }
}