CS计算机代考程序代写 Java android 07/08/2021 RecyclerViews & Card View | Alexandria

07/08/2021 RecyclerViews & Card View | Alexandria
MODULE
RecyclerViews & Card View
Nawfal Ali
Updated 22 April 2020
What is RecyclerView?
A RecyclerView is a exible viewgroup for providing a limited window into a large data set. The purpose of the RecyclerView is to allow information to be presented to the user in the form of a scrollable list. The RecyclerView is signicantly more ecient in the way it manages the views that make up a list, essentially reusing existing views that make up list items as they scroll o the screen instead if creating new ones (hence the name “recycler”).
Random Card Generator Application
In the following sections, we are going to develop an application that uses RecyclerView to display Cards that are generated randomly. Each card is implemented as a CardView.
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07/08/2021 RecyclerViews & Card View | Alexandria
CardView
The CardView class is a user interface view that allows information to be presented in groups using a card metaphor. Cards are usually presented in lists using a RecyclerView instance and may be congured to appear with shadow eects and rounded corners.
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The user interface layout to be presented with a CardView instance is dened within an XML layout resource le and loaded into the CardView at runtime. The CardView layout can contain a layout of any complexity using the standard layout managers such as RelativeLayout and LinearLayout.
card_layout.xml
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As you can see, the cardview works as a top-level container that has a relative layout as a child element. Inside the relative layout, we have two text views that will be used to display our data. You can replace the relative layout with any layout you do prefer.
RecyclerView
It is a container for rendering a larger data set of views that can be recycled and scrolled very eciently. It uses a subclass of RecyclerView.Adapter for providing views that represent items in a data set.
activity_main.xml
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