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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?

How set background color for buttons using xml files?

i create this xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<shape android:shape="rectangle">
<gradient
android:startColor="#color/light_blue"
android:centerColor="#color/dark_blue"
android:endColor="#color/light_purple"
>
</gradient>
<corners
android:radius="30dp">
</corners>
</shape>
</item>
</selector>
and i trying to set this file to my button background.but problem is background dose not accept colors of xml file.it is use backgroundTint colors and not the colors i set above.
THIS IS MY ACTIVITY_XML
<Button
android:id="#+id/temp_l"
android:layout_width="250dp"
android:layout_height="33dp"
android:background="#drawable/temp_shape"
app:layout_constraintBottom_toTopOf="#+id/scrollView2"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.497"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.143" />
i searched in youtube and saw that eveyone did what i did but they get result and im not.
sorry about my english.its not very well.

I guess you are using android:backgroundTint="#null" with android namespace, but you need to set app:backgroundTint="#null" with app namespace instead
Side note:
You should wrap the xml drawable into a layer-list as long as you have no need to the selector, so you might change it to:
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="rectangle">
<gradient
android:centerColor="#055D93"
android:endColor="#color/light_purple"
android:startColor="#color/light_blue" />
<corners android:radius="30dp">
</corners>
</shape>
</item>
</layer-list>
Preview

How do I draw this round rectangle?

enter image description hereI am a beginer in Android doing an internship and i have been given the task to complete this navigation drawer for the app.Any help would be highly appreciated

Create new drawable and add the following code:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="rectangle">
<corners android:topLeftRadius="20dp" android:bottomRightRadius="20dp"/>
<solid android:color="#color/semi_transparent_white"/>
</shape>
</item>
</selector>

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.