What are custom view components in Android?
Custom View Components. Android offers a sophisticated and powerful componentized model for building your UI, based on the fundamental layout classes: View and ViewGroup. To start with, the platform includes a variety of prebuilt View and ViewGroup subclasses — called widgets and layouts, respectively — that you can use to construct your UI.
What is Android view and viewgroup?
Android offers a sophisticated and powerful componentized model for building your UI, based on the fundamental layout classes: View and ViewGroup. To start with, the platform includes a variety of prebuilt View and ViewGroup subclasses — called widgets and layouts, respectively — that you can use to construct your UI.
What is the market share of Android in India?
In Brazil, India, Indonesia, Turkey and Vietnam, Android has over 85 percent marketshare. Even though Android continues to grow in active users, consumers started to buy phones at a slower rate starting in 2015. Android yearly shipments peaked in 2018, when OEM partners sold 1.33 billion units.
What can I do with custom views?
To give an idea of the control you get with custom views, here are some examples of what you could do with them: You could create a completely custom-rendered View type, for example a “volume control” knob rendered using 2D graphics, and which resembles an analog electronic control.
Is it possible to customize the behavior of a view component?
You can do all of the things you would do with a fully customized component, but by starting with a more specialized class in the View hierarchy, you can also get a lot of behavior for free that probably does exactly what you want. As an example, the NotePad application demonstrates many aspects of using the Android platform.
How do I exclude the class attribute from a custom view component?
If your custom View component is not defined as an inner class, then you can, alternatively, declare the View component with the XML element name, and exclude the class attribute. For example: