Layouts and widgets are created using the default UI theme of our project. We can change the appearance of the elements of the UI by creating styles. Styles can be grouped to create a theme, and a theme can be applied to an activity or to the whole application. Some themes are provided by default, such as the Holo style. Styles and themes are created as resources under the
To continue our example, follow these steps:
stylesfile. You will notice that this theme is an ...