app/src/main/res/drawable/colorpicker_button.xml
<vector
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:aapt="http://schemas.android.com/aapt"
android:width="24dp"
android:height="24dp"
android:viewportHeight="24"
android:viewportWidth="24">
<!-- path data for a circle: -->
<!--A rx, ry x-axis-rotation large-arc-flag, sweep-flag x, y -->
<!-- A10,10 0 1,1 22,12 -->
<path
android:pathData="M4,12
A8,8 0 1,1 20,12
A8,8 0 1,1 4,12 Z" >
<aapt:attr name="android:fillColor">
<gradient
android:centerX="12"
android:centerY="12"
android:startColor="@color/first_drawing_button"
android:centerColor="@color/second_drawing_button"
android:endColor="@color/third_drawing_button"
android:type="sweep">
</gradient>
</aapt:attr>
</path>
</vector>