How to change the stroke width of a shape programmatically in Android?

Question

This is circle.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
       android:shape="oval">
    <solid android:color="#00000000"/> 
    <padding android:left="30dp" android:top="30dp"
             android:right="30dp" android:bottom="30dp" />
    <stroke android:color="#439CC8" android:width="7dp" />
</shape>

This is my code:

textview.setBackgroundResource(R.drawable.circle);

I want to change the stroke thickness in my java code. How can I change it programmatically?

Answer 1

You may need to create it programmatically

ShapeDrawable circle = new ShapeDrawable( new  OvalShape() );

you need to set the properties after this, ( padding, color, etc) then change its stroke

circle.getPaint().setStrokeWidth(12);

then set it as the background for the view

textview.setBackgroundDrawable(circle);