Android Display Lists Overview

A specialized view in Android used to display a dropdown menu.

An adapter helps link the data (items) to the Spinner, making it possible to display the data within the drop-down menu.

The adapter defines the layout for each item in the Spinner's drop-down menu.

Binding an adapter to the Spinner ensures that the data is displayed correctly in the drop-down menu.

By using 'setOnItemSelectedListener', you can monitor when a user selects an item from the Spinner's drop-down menu.

The 'onItemSelected' method is triggered when a user selects an item in the Spinner's drop-down menu.

The 'onItemSelected' method receives information about the selected item, including its position in the data list.

A ListView is similar to a Spinner but allows for the display of a longer list of items and typically each item is clickable.

A UI widget that displays a list of items in a drop-down menu.

An array of data that holds the items to be displayed in a Spinner.

A class that helps display data in a Spinner. An adapter acts as a bridge between the data and the Spinner widget.

The built-in Android layouts used by ArrayAdapter to format Spinner items. Examples include android.R.layout.simple_spinner_item and android.R.layout.simple_spinner_dropdown_item.

A method called on a Spinner object to set the Adapter that will manage the display of its content.

An interface that listens for selections made in a Spinner. setOnItemSelectedListener is used to register a listener for selection events.

A list of data that is displayed in a simple, scrollable format.

A more advanced list view that allows for efficient and flexible display of large datasets. It's designed to improve the performance of list views.

The primary way to display data in a Spinner. An Adapter is a bridge connecting the data and the UI component.

An event that occurs when the user selects an item from the drop-down menu of a Spinner.

It allows you to define the layout and structure of the ListView within your XML file.

You can use a String array in your code to provide the data that the ListView should display.

An ArrayAdapter is used to link your data (like a string array) with the ListView and to display each item in the correct format.

The ArrayAdapter takes three parameters: the current context, a reference to the built-in layout for simple list items, and the array of data to display.

The setAdapter() method of the ListView is used to attach the ArrayAdapter to the ListView, which tells the ListView how to display the data.

A listener attached to the ListView that allows you to handle events when a list item is clicked. It helps you respond to user interactions.

The onItemClick method is called when a list item is clicked. It provides information about the clicked item, including its position in the list and the associated data.

The onItemClick method typically retrieves the data of the selected item and then uses it with the Toast class to display feedback to the user, confirming their selection.

A more advanced and customizable way to display lists compared to ListView. It offers flexibility in how data is displayed and provides more control over the layout.

The adapter used in RecyclerView, similar to ListView's adapter. Binds data to the RecyclerView view.

A layout manager that controls the layout of items displayed in RecyclerView. It handles arrangement, spacing, and scrolling. Common types include LinearLayoutManager and GridLayoutManager.

A UI element that presents content in a card format, often used in RecyclerView. It can have shadows and rounded corners, enhancing visual appeal and providing a consistent look.

A UI element that provides a container for displaying content in a flexible way. Not necessarily used exclusively with RecyclerView.

The attribute used to set the elevation (shadow) of a CardView, giving it a raised look. This is exclusive to Android 5.0+ (API 21+).

A layout used to provide a basic structure for each item displayed in the RecyclerView, like a row in a list.

The process of adding the RecyclerView library to your app's dependencies. This involves using the implementation keyword in the build.gradle module file.

Adding the RecyclerView widget to your XML layout file, typically in an Activity's layout. You need to provide unique ID attributes to the widget for later reference in your code.

Preparing a data source for displaying in the RecyclerView. The data can be in various formats like a list of strings, objects, or any other data structure.

Creating an instance of a RecyclerView.LayoutManager, responsible for positioning, aligning, and managing scrolling of items in the RecyclerView. Common options include LinearLayoutManager.

A class that extends RecyclerView.Adapter and is responsible for binding your data to the RecyclerView. It handles tasks like creating view holders, populating view holders with data, and determining the number of items to display.

A class that extends RecyclerView.ViewHolder and represents a single view within the RecyclerView. It holds a reference to the view and its child views, responsible for displaying data based on the provided position.

The method called when the RecyclerView needs a new ViewHolder. It inflates the layout for each item and returns a new ViewHolder.

The method responsible for binding data to a ViewHolder at a specific position in the RecyclerView. It updates the view elements within the ViewHolder with the appropriate data.

The method that returns the total number of items to display in the RecyclerView, determined by the size of your underlying data source.