Examples of view collections include the wrapper collections returned by methods such as Collections.checkedCollection, Collections.synchronizedCollection, and Collections.unmodifiableCollection.

Apr 16, 2025 · Collection widgets specialize in displaying many elements of the same type, such as collections of pictures from a gallery app, articles from a news app, or messages from a communication app. Collection widgets typically focus on two use cases: browsing the collection and opening an element of the collection to its detail view.

Sep 26, 2013 · 1, 2) Collections are good for keeping groups of information lumped together and accessible through 1 variable. They also make it very easy to iterate over them, which makes them ideal for things like ListView adapters since that is also a list (or a collection). Consider the following if you dont have an array

Aug 27, 2012 · Just making a little android app, and I need to hold a collection of data, and not sure if I should use an object, array, listarray, hashmap, etc. It needs to be able to store strings and integers (eg tamename, score, category, number of turns).

There are several kinds of spinner adapter, including the ArrayAdapter and CursorAdapter classes: An ArrayAdapter gets data from a collection, such as an array or an ArrayList. A CursorAdapter gets data from a database query. In the code above, an ArrayAdapter is used. The ArrayAdapter constructor has three parameters:

For example, a collection of pictures from a gallery app, or a collection of emails/messages from a communication app. Collection widgets were introduced in Android 3.0 to provide this additional benefit. Collection widgets support ListView, GridView and StackView layouts.

This class consists exclusively of static methods that operate on or return collections. It contains polymorphic algorithms that operate on collections, "wrappers", which return a new collection backed by a specified collection, and a few other odds and ends.

Apr 23, 2024 · Whether you need to find the first element matching a predicate, retrieve the first element without throwing exceptions, or fetch a single element from a collection, Kotlin’s collection functions have got you covered.

Stay organized with collections Save and categorize content based on your preferences. A selection of code samples and templates for you to use to accelerate your app development. Browse samples to learn how to build different components for your applications. Now in Android is a fully functional Android app built with Kotlin and Jetpack Compose.

This section contains a list of topics for Android programming examples, ranging from the most basic to the most advanced Android programs. Every example program includes the description of the program, Android code, the explanation as well as the output of the program.