So, we can simply define dark mode as a setting that changes the overall color of your application to black. It’s highly likely that you have already used dark mode on your phone or computer at one point. The dark mode feature does not need any significant explanation. Numerous developers and huge companies such as Google, Facebook, and Twitter have already implemented this feature in their applications. Users can change the entire look and feel of their application with a click of a button. First, we need to create a style for a theme overlay where we set colorPrimary.In the recent past, there has been a lot of excitement regarding dark mode. Let’s continue with the aforementioned scenario where we are changing the button background color by the colorPrimary theme attribute. Apply this style on the layout file by using android:theme or programmatically by using ContextThemeWrapper.Create a style that consists of theme attributes desired to be changed.Theme overlays are very useful when you update the theme of a specific part of your app.Īpplying a theme overlay consists of 2 steps: Theme overlay is a technique used to override theme attributes for any view or view group. Then, how do we actually change the theme attributes only for a single view? Here is where theme overlay comes into play. If a view style includes a theme attribute, it will be ignored. This is because a view only knows about its own attributes Button isn’t aware of the colorPrimary attribute so it’s ignored.Ī view gets the view attributes from the layout file or the style attribute.

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