How can I set a custom seekbar's ProgressDrawable size to be smaller than the ProgressBackground

Question

I have a custom seekbar that's not quite working.

I want the seekbar to look like this:

But this is as close as I have been able to get

Ignoring the slight coloring and size issues, the problem I'm having is with the green progress size. Is there some way to make this smaller than the background? I've tried size and padding tags in the XML, and even tried fiddling with two rectangles on top of each other with clip gravity, but no luck yet.

Here is my Seekbar drawable

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:id="@android:id/background">
        <shape android:shape="rectangle">
            <corners android:radius="20dp" />
            <solid android:color="@color/fofo_grey" />

        </shape>
    </item>

    <item android:id="@android:id/progress">

        <clip>
            <shape android:shape="rectangle">
                <corners android:radius="20dp" />
                  <solid android:color="@color/signup_green" />
            </shape>
    </clip>
    </item>

</layer-list>  

And the Seekbar in the layout fragment

<SeekBar
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/seekBar"
    android:layout_below="@+id/textView6"
    android:layout_centerHorizontal="true"
    android:splitTrack="false"
    android:progressDrawable="@drawable/custom_seekbar"
    android:thumb="@drawable/thumb_seekbar"
    android:max="100"
    android:progress="50"
    android:indeterminate="false" />

Answer 1

for change height progress drawble just add android:minHeight="2dp" and android:maxHeight="2dp" to layout.

UPDATE:

<androidx.appcompat.widget.AppCompatSeekBar
    android:id="@+id/seekBar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginLeft="20dp"
    android:layout_marginRight="20dp"
    android:paddingLeft="0dp"
    android:paddingRight="0dp"
    android:paddingTop="8dp"
    android:paddingBottom="8dp"
    android:max="100"
    android:minHeight="2dp"
    android:maxHeight="2dp"
    android:background="@android:color/transparent"
    android:progressDrawable="@drawable/sb_progress_drawable"
    android:progress="0"
    android:secondaryProgress="0"
    android:thumbOffset="0dp"
    android:thumb="@drawable/sb_thumb" />

sb_progress_drawable.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">
        <shape android:shape="rectangle">
            <solid android:color="#26FFFFFF"/>
        </shape>
    </item>

    <item android:id="@android:id/secondaryProgress">
        <scale
            android:scaleWidth="100%" >
            <shape android:shape="rectangle">
                <solid android:color="#26FFFFFF"/>
            </shape>
        </scale>
    </item>

    <item android:id="@android:id/progress">
        <scale
            android:scaleWidth="100%" >
            <shape android:shape="rectangle">
                <solid android:color="#FFFFFF"/>
            </shape>
        </scale>
    </item>

</layer-list>

sb_thumb.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="oval">
    <size android:width="20dp" android:height="20dp" />
    <solid android:color="#FFFFFF" />
</shape>