![]() In this tutorial, we’ll create two themes that define different background colors and text colors: Whether you’re working with ‘themes.xml’ or ‘styles.xml,’ custom themes are defined in the following steps:ġ) Add the opening and closing ‘resources’ tags: Ģ) Give your theme a unique name, and add the closing ‘style’ tag: ģ) Define the visual aspects of your theme using pairs of XML attributes and values: #000000 ![]() To create a ‘themes.xml’ file, right click and select ‘New’ followed by ‘Android XML File.’ You can define themes in ‘styles.xml’ or if you want to keep your themes and styles separate you can create a dedicated themes file. When you create an Android project, Eclipse automatically generates a ‘styles.xml’ file in the res/layout folder. The Android platform includes some pre-defined themes, but it’s easy to create your own so we’ll jump straight into defining a custom theme. A style is a set of formatting rules applied to a View.A theme is a set of formatting rules applied across entire activities or applications.For the sake of clarity, we’ll focus on themes in this tutorial, but in reality the only difference between a theme and a style is their scope: ‘Themes’ and ‘styles’ are often used almost interchangeably in Android tutorials. This saves you time and reduces the chances of human error. In Android, ‘themes’ are an easy way to apply consistent formatting to your user interface (UI.) Defining a theme in advance not only saves you coding time in the long run, but it means that if you ever need to make UI adjustments, you only need to touch the code in one location. Learn Mobile Development and Start your Free Trial today! Intro to Themes In this tutorial, I’ll provide a brief intro into the concept of themes in Android, before showing you how to put themes to work by creating a project where the user can change the app’s theme dynamically at runtime, simply by clicking a button.
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