Ochuba

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <stroke android:color="@color/signIn"
        android:width="2dp"/>
    <solid android:color="@android:color/transparent"/>
    <corners
        android:radius="5dp"/>

             // follow the comments in get.xml for better understanding

Ochuba

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle"> // defines the shape of the background

    <solid android:color="@color/signIn"/> // this color is defined in the color.xml
    <corners android:radius="5dp"/> // defines the corner radius

</shape>