layout - Android custom RatingBar image artifacts

Question

I implemented a custom RatingBar in an application on my ListView items. Custom style ratingbar_red.xml:

<?xml version="1.0" encoding="UTF-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:id="@android:id/background" android:drawable="@drawable/star_off" />
    <item android:id="@android:id/secondaryProgress" android:drawable="@drawable/star_on" />
    <item android:id="@android:id/progress" android:drawable="@drawable/star_on" />
</layer-list>

Here's part of ListItem layout:

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    android:paddingLeft="15dp" >

    <RatingBar
        android:id="@+id/li_company_rating"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="15dp"
        android:layout_marginBottom="1dp"
        android:isIndicator="true"
        android:numStars="5"
        android:progressDrawable="@drawable/ratingbar_red"
        android:stepSize="1" />

    <Button
        android:id="@+id/li_company_callbtn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="0dp"
        android:layout_marginLeft="40dp"
        android:contentDescription="@string/ContentDescription"
        android:drawableLeft="@drawable/phone_icon"
        android:drawablePadding="5dp"
        android:onClick="callbtn_Click"
        android:text="@string/CallButton"
        android:focusable="false"
        android:focusableInTouchMode="false" >
    </Button>

</LinearLayout>

It works, but when the rating is set, I get some strange image artifacts; 2 vertical lines below the pink stars appear on my view:

Here is star_on.png

star_off.png looks okay, and if rating == 0, the lines don't appear.

I'm android beginner, and can't understand what the problem is.

Answer 1

Try giving height to RatingBar in xml layout like this:

android:layout_height="30dp" 

30dp or whatever suits you..

Check out why is this happening ??