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divide a ring drawable into two equal part in android

i want to have a half drawable ring just like an arc.
i have a code that just creates the ring but i am confused how to make it a half ring.
how do i achieve this half ring drawable?
<shape android:shape="ring"
android:innerRadius="15dp"
android:thickness="20dp"
android:useLevel="false"
xmlns:android="http://schemas.android.com/apk/res/android">
<solid android:color="#color/blue"/>
<size android:height="200dp" android:width="200dp"/>
</shape>
This is the image that exactly looks like what am trying to achieve.
click here

you can create like this
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:end="0dp"
android:left="-500dp">
<shape>
<corners android:radius="500dp" />
<solid android:color="#color/colorPrimary" />
</shape>
</item>
<item
android:end="100dp"
android:bottom="100dp"
android:top="100dp"
android:start="-400dp">
<shape>
<corners android:radius="500dp" />
<solid android:color="#color/white" />
</shape>
</item>
</layer-list>
if you went to perfect view then create svg file for this

How to get this ellipse shape in android seekbar?

I'm trying to do a custom circular seekbar but i haven't being able to achieve this shape yet.
The problem is basically that long circle shape because i did a custom circular seekbar before:
This is the code from the second picture:
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape
android:shape="ring"
android:thicknessRatio="16"
android:useLevel="false">
<solid android:color="#color/black" />
</shape>
</item>
<item>
<rotate
android:fromDegrees="270"
android:toDegrees="270">
<shape
android:shape="ring"
android:thicknessRatio="16"
android:useLevel="true">
<solid android:color="#color/green" />
</shape>
</rotate>
</item>
</layer-list>
I've tried changing the size but it obviously give it a different form:
Does anyone have any clue for me to get this?

Android layerlist is not working in different mobiles

I want to create a drawable file like the below screenshot.
My drawable xml file:
<?xml version="1.0" encoding="utf-8"?>
<layer-list
xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:top="0px"
android:left="0px"
android:right="0px"
android:bottom="0px">
<shape android:shape="rectangle">
<corners android:radius="#dimen/_6sdp" />
<solid android:color="#color/activeslots"/>
</shape>
</item>
<item
android:top="#dimen/_14sdp"
android:left="#dimen/_12sdp"
android:right="#dimen/_58sdp"
android:bottom="#dimen/_14sdp">
<shape android:shape="oval">
<solid android:color="#color/white"/>
<size android:height="#dimen/_20sdp"
android:width="#dimen/_20sdp"/>
</shape>
</item>
</layer-list>
I created rectangle and oval inside the layer_list. But the issue is it is not working in different mobiles, also the white circle inside the drawable is becomes big after setting height and width.

How to set shapedrawable's border and fill colours to different colours

I need to set the border colour and fill colour of a shapedrawable to different colours. How can I set both colours and have the shape as fill and stroke?
Say I have this:
ShapeDrawable border = new ShapeDrawable(new RectShape());
border.getPaint().setStyle(Paint.Style.FILL_AND_STROKE);
border.getPaint().setColor(Color.WHITE);
border.getPaint().setStrokeColour(Color.BLACK); //???????? How to do
Edit: My question is not a duplicate of Android ShapeDrawable set Background and Border programmatically because that question's only answer is unclear and does not help me.

You might want to define your drawable in XML instead. It would look something like this:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#color/WHITE"/>
<stroke
android:width="2dp"
android:color="#color/BLACK" />

you might define an xml like below and use it where you need:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<corners
android:radius="7dp"
android:topRightRadius="7dp"
android:topLeftRadius="7dp"
android:bottomRightRadius="7dp"
android:bottomLeftRadius="7dp" />
<solid android:color="#android:color/white" />
<stroke android:width="1dip" android:color="#c9d1d7"/>
</shape>

Can we create rectangular ring?

From what I learn, there are 4 shapes that available for "android:shape" which are rectangular, line, oval and ring. I want to create a rectangular ring and it seems that, 'android:shape="ring"' only support circle shape ring, not rectangular shape ring. how can I create the rectangular ring with a hole/transparent in the middle of it?

ring.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#android:color/transparent"/>
<stroke android:color="#android:color/holo_blue_bright"
android:width="20dp"/>
<size android:height="200dp"
android:width="200dp"/> //same height and width gives you a square
</shape>
This will give you a shape like this if that is what you want

If you mean a rectangle with rounded corners, use the rectangle shape with corners element.
Updated with a hole in the middle
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#android:color/transparent" />
<stroke
android:color="#android:color/black"
android:width="5dp"/>
<size
android:width="40dp"
android:height="30dp" />
<corners android:radius="20dp" />
</shape>