What is CardView Android?
Android 7.0 introduces a new widget called CardView which essentially can be thought of as a FrameLayout with rounded corners and shadow based on its elevation. Note that a CardView wraps a layout and will often be the container used in a layout for each item within a ListView or RecyclerView.
Why do we use CardView in Android?
CardView is a new widget in Android that can be used to display any sort of data by providing a rounded corner layout along with a specific elevation. CardView is the view that can display views on top of each other. The main usage of CardView is that it helps to give a rich feel and look to the UI design.
What is difference between CardView and RecyclerView?
The RecyclerView is a more advanced and more flexible version of the ListView. This new component is a big step because the ListView is one of the most used UI widgets. The CardView widget, on the other hand, is a new component that does not “upgrade” an existing component.
Is CardView deprecated?
CardView : it is provided by the old support libraries and it is deprecated.
What is elevation in CardView android?
CardView uses elevation property on Lollipop for shadows and falls back to a custom emulated shadow implementation on older platforms. Due to expensive nature of rounded corner clipping, on platforms before Lollipop, CardView does not clip its children that intersect with rounded corners.
What are layout managers in android?
A LayoutManager is responsible for measuring and positioning item views within a RecyclerView as well as determining the policy for when to recycle item views that are no longer visible to the user.
What is elevation in android?
Elevation (Android) Elevation is the relative depth, or distance, between two surfaces along the z-axis. Specifications: Elevation is measured in the same units as the x and y axes, typically in density-independent pixels (dp).
What is RecyclerView and CardView in Android?
CardView: CardView is an extended version of Framelayout which can be used to show items inside the card format. With the help of CardView, we can add radius, elevation to our items of RecyclerView. CardView gives a rich look and feels to our list of data. RecyclerView: RecyclerView is an extended version of ListView.
When should I use RecyclerView?
RecyclerView is powerful when you need to customize your list or you want better animations. Those convenience methods in ListView caused a lot of trouble to people which is why RecyclerView provides a more flexible solution to them. The major change you need to make for migration is in your adapter.
What is a FrameLayout in android?
FrameLayout is designed to block out an area on the screen to display a single item. Generally, FrameLayout should be used to hold a single child view, because it can be difficult to organize child views in a way that’s scalable to different screen sizes without the children overlapping each other.
What are fragments in android?
A Fragment represents a reusable portion of your app’s UI. A fragment defines and manages its own layout, has its own lifecycle, and can handle its own input events. Fragments cannot live on their own–they must be hosted by an activity or another fragment.
What does layout manager do?
A layout manager is an object that implements the LayoutManager interface* and determines the size and position of the components within a container. Although components can provide size and alignment hints, a container’s layout manager has the final say on the size and position of the components within the container.