Cannot lower case button text in android studio
You could add android:textAllCaps="false" to the button.
The button text might be transformed to uppercase by your app's theme that applies to all buttons. Check themes / styles files for setting the attribute android:textAllCaps.
<style name="AppTheme" parent="AppBaseTheme"> <item name="android:buttonStyle">@style/Button</item></style><style name="Button" parent="Widget.AppCompat.Button"> <item name="android:textAllCaps">false</item></style>
This is fixable in the application code by setting the button's TransformationMethod null, e.g.
mButton.setTransformationMethod(null);