drawable image in android studio code example

Example 1: android display drawable in imageview

img=(ImageView)findViewById(R.id.imageview1);
Drawable myDrawable = getResources().getDrawable(R.drawable.imageView1);
img.setImageDrawable(myDrawable);

Example 2: xml drawable

create shape.xml in drawable folder

like shape.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >
  <stroke android:width="2dp"
    android:color="#FFFFFF"/>
  <gradient 
    android:angle="225"
    android:startColor="#DD2ECCFA"
    android:endColor="#DD000000"/>
<corners
    android:bottomLeftRadius="7dp"
    android:bottomRightRadius="7dp"
    android:topLeftRadius="7dp"
   android:topRightRadius="7dp" />
</shape>
and in myactivity.xml

you can use

<Button
    android:id="@+id/btn_Shap"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" 
    android:text="@string/Shape"
    android:background="@drawable/shape"/>