Let's say you wanted to change the layout_marginStart value for these TextView elements. Īs you can see in the above code, properties such as layout_width, layout_height, and layout_marginStart are explicitly included in the definition of each view, and they have the same value. Therefore, let's start by creating a new empty activity and adding two TextView elements to its layout XML file. Styles are obviously applied to UI components. You'll also learn how styles and themes are different from each other and how to use them properly. In this tutorial, you'll learn how to create custom styles and themes for your Android apps. If you are familiar with web development, the first approach is akin to using inline CSS styles, and the second approach is akin to using stylesheets.

The second approach involves creating and using custom styles and themes. This approach is feasible only if you are working on a simple app that has a small number of views and activities. The first approach involves directly modifying the properties of views in layout XML files. There are two approaches to modifying the look of Android apps. If you find that hard to believe, I suggest you take a quick look at the apps in the Top Charts section of Google Play. On Google Play, which hosts well over a million apps today, looks are just as important as functionality, if not more. Functionality alone, however, is rarely enough. As Android developers, we tend to focus primarily on the functionality of our apps.

Android studio app theme.black