android studio preview rendering problems custom view

Now that you understand what Compound Components are, let us jump right in! P.S: If the whole thing still feels blurry, you can always check out what the smart folks at Google had to say about the whole topic here. Most times, you might not need to extend a basic view and provide custom implementations to it, the design you’re looking for might be attained by joining a set of views already provided by the Android Framework, and Voila!, your compound component is ready! This article discusses Compound Components, and how they can be used in isolating a certain number of elements, whose functionality is closely related, and would be needed more than one time across the whole application.

Sounds a bit obscure? don’t worry, hang in there. These ViewGroups can also be extended by grouping various views with different functions into a single ViewGroup, and then referencing the ViewGroup and its sub-elements with a single view name - Compound Components. Examples are LinearLayout, ConstraintLayout, RelativeLayout and a lot more. Extending a ViewGroup: Views that accommodate other views as children are referred to as ViewGroups - Layouts.Extending a View: This process entails creating a subclass of the View class or any of its subclasses, giving us implementation data present in a basic android view to work with, after which overriding can then follow.In this light, we are presented with Custom Views.Ĭustom Views are views that subclass existing View or ViewGroup implementations to provide absolute control over the appearance and functions of the element.Ĭustom Views in android can be created in two ways: Whether it’s a TextView to display the status of a launched transaction, or an ImageView to showcase a retrieved image from a URL, all of these views are amazing, and we can always change few attributes handed to us by Android to customize the already existing views to our needs.Īt the same time, designing an application that’s unique across android’s “design” scheme, and does not necessarily depend on existing android views to mock its look and feel is a skill that is very great to have up our sleeves. Series RoadmapĪndroid provides us with a huge set of views that already cater to our basic needs. Creating awesome custom views on Android by leveraging the power of Compound Components.

Android studio preview rendering problems custom view