What are Android services?
Android service is a component that is used to perform operations on the background such as playing music, handle network transactions, interacting content providers etc. It doesn’t has any UI (user interface). The service runs in the background indefinitely even if application is destroyed.
What are the two main types of services in Android?
Android has two kinds of services: bound and unbound services. An unbound service will run in the operating system`s background for an unlimited time, even when the activity that just started this service will end in the future. A bound service will work till the activity which started the service ends.
When start service () is called which service get created?
Starting a service
The Android system calls the service’s onStartCommand() method and passes it the Intent , which specifies which service to start. Note: If your app targets API level 26 or higher, the system imposes restrictions on using or creating background services unless the app itself is in the foreground.
What is the life cycle of services?
The product/service life cycle is a process used to identify the stage in which a product or service is encountering at that time. Its four stages – introduction, growth, maturity, and decline – each describe what the product or service is incurring at that time.
What is meant by theme in Android?
A theme is a collection of attributes that’s applied to an entire app, activity, or view hierarchy—not just an individual view. When you apply a theme, every view in the app or activity applies each of the theme’s attributes that it supports.
What is Android BroadcastReceiver?
Broadcast receiver is an Android component which allows you to send or receive Android system or application events. … For example, applications can register for various system events like boot complete or battery low, and Android system sends broadcast when specific event occur.
What is Android ViewGroup?
A ViewGroup is a special view that can contain other views. The ViewGroup is the base class for Layouts in android, like LinearLayout , RelativeLayout , FrameLayout etc. In other words, ViewGroup is generally used to define the layout in which views(widgets) will be set/arranged/listed on the android screen.
When should you create a service?
Creating a service with non-static functions suits when we want to use the functions inside the particular class i.e. private functions or when another class needs it i.e. public function.
How many types of services are there in Android?
There are four different types of Android services: Bound Service – A bound service is a service that has some other component (typically an Activity) bound to it. A bound service provides an interface that allows the bound component and the service to interact with each other.
What is the lifecycle of services in Android?
When a service is started, it has a lifecycle that’s independent of the component that started it. The service can run in the background indefinitely, even if the component that started it is destroyed.
What is the main component in Android?
Android applications are broken down into four main components: activities, services, content providers, and broadcast receivers. Approaching Android from these four components gives the developer the competitive edge to be a trendsetter in mobile application development.