What is Android?
Android is an open-source mobile operating system built by Google for developing applications on smartphones, tablets, and other small devices.
What are the major components of an Android application?
The main components are Activities, Services, Broadcast Receivers, and Content Providers which take care of the different functionalities the app works with.
What is Activity in Android?
An Activity is considered a single user interface screen in which the interaction of the user takes place as a list or forms.
What is a Service in Android?
A Service performs the function where the user interface background running task can be performed for a long time irrespective of whether the app being used by the user has come to the foreground or not.
What is the difference between a Broadcast Receiver and a Service?
The main difference is that while a Broadcast Receiver is set up to listen to events that system-wide or app-specific event broadcasts, a Service performs long-running tasks in the background. The Broadcast Receiver responds to the broadcast messages sent by other applications or by the system itself.
What is Intent in Android?
An Intent is an abstract object that defines the interaction between different components such as activities, services, and broadcast receivers to perform actions such as starting activities or sending messages.
What does the AndroidManifest.xml file contain?
The AndroidManifest.xml file would contain all the information regarding the app that the developed would consider essential such as the components of the app, that is activities, services, permissions, and features required by the app on the device.
What is a Content Provider in Android?
A shared database is the data that is shared through a content provider's access for different applications to interact and share with each other for security reasons.
What are the types of storage available in Android?
Android provides internal storage, external storage, and SQLite databases. Internal memory is the memory contained within the device itself, while external memory can include even a microSD card. SQLite databases are for methods that require the use of existing database logic and functionalities.
What are the differences between Fragment and Activity in Android?
Activity is considered a single screen that can contain multiple fragments, while a Fragment is used to create a dynamic user interface putting together reusable components that can be combined and reused across Activities.
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