Set upper case for TextView

Kotlin:

textView.isAllCaps = true

use this for programatically like textView.setAllCaps(false) for as it is and textView.setAllCaps(true)for Uppercase android:textAllCaps="true" for XML Layout

In the layout XML, you can set the android:textAllCaps attribute on your TextView:

<TextView android:textAllCaps="true"></TextView>

Use String class method while setting the text to TextView as

tv.setText(strings.toUpperCase());

Have a look at this post for detail discussion.

EDIT: This was answered way back before API 14. As other answer mentioned here, textView.isAllCaps = true and its java methods were introduced from TextView. Please use those.