Star padding problem at runtime

[AminEsmaeily]

I have a layout view like this:

<RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="30dp"
        android:background="@drawable/btn1"
        android:paddingLeft="5dp"
        android:paddingTop="35dp"
        android:paddingRight="5dp"
        android:paddingBottom="5dp">

        <com.willy.ratingbar.ScaleRatingBar
            android:id="@+id/srbOveralRating"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layoutDirection="ltr"
            app:srb_numStars="5"
            app:srb_minimumStars="1"
            app:srb_starWidth="20dp"
            app:srb_starHeight="20dp"
            app:srb_starPadding="5dp"
            app:srb_stepSize="0.5"
            app:srb_isIndicator="true"
            app:srb_clickable="false"
            app:srb_scrollable="true"
            app:srb_clearRatingEnabled="true"
            app:srb_drawableEmpty="@drawable/ic_star_empty"
            app:srb_drawableFilled="@drawable/ic_star_full"
            android:layout_centerHorizontal="true"
            android:layout_marginTop="20dp"/>

        <com.willy.ratingbar.ScaleRatingBar
            android:id="@+id/srbUserRate"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerHorizontal="true"
            android:layoutDirection="ltr"
            app:srb_numStars="5"
            app:srb_minimumStars="1"
            app:srb_starWidth="40dp"
            app:srb_starHeight="40dp"
            app:srb_starPadding="5dp"
            app:srb_stepSize="1"
            app:srb_isIndicator="false"
            app:srb_clickable="true"
            app:srb_scrollable="true"
            app:srb_clearRatingEnabled="true"
            app:srb_drawableEmpty="@drawable/ic_star_empty"
            app:srb_drawableFilled="@drawable/ic_star_full"
            android:layout_below="@id/srbOveralRating"
            android:layout_marginTop="10dp"/>
    </RelativeLayout>

At design-time it shows perfectly:

but at runtime, the stars arrange without considering the starPadding property and they stretch to fill the parent:

And the second issue is about displaying the half star when the main layout direction has been set to RTL, but as you can see in code, the control's layoutDirection property has set to LTR.