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Now we will see how the User Interface(UI) can be designed inside Android, when we talk about the user interface of Android, we have to keep in mind some Classes and Sub-Classes, due to which our Android activity will be the design, and we will design the components of the user interface that we need for designing on that basis.
The basic building block for the user interface is a View object which is created from the View class and occupies a rectangular area on the screen.
Like we can say our mobile screen, which we use to function any application, we can achieve two things by this, first, we will decide how our UI will be, and the components of the UI after designing. We will design its working functionality here as well.
Now to learn its working functionality, we have to keep in mind its Classes and some Sub-Classes, one of which is Widgets, we will use it to put different components inside our mobile application like Buttons, Text Field, etc...
And the other one is the View group, which is an invisible container that holds other view groups, and defines its layout properties.
And the third level is Layout, which decides the designing flow of the application.
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