How do you find the Context of an activity?
Let us begin.
- The keyword “this”.
- Get current activity context: View.
- Get application-level context: getApplicationContext()
- Get original context: getBaseContext()
- Get fragment context: getContext()
- Get parent activity: getActivity()
- Non-nullable context: requireContext() and requireActivity()
Table of Contents
How do they communicate between 2 different applications?
Android Interprocess Communication At the simplest level, there are two different ways for apps to interact on Android: through intents, passing data from one app to another; and through services, where an app provides functionality for others to use.
When to use getapplicationcontext in an activity?
In case you need to initialize a library in an activity, always pass the application context, not the activity context. You only use getApplicationContext() when you know you need a Context for something that may outlast any other Context you likely have at your disposal. This context is available in an activity.
What does context mean in an Android app?
An Android app has activities. It is like an identifier of the environment in which your application is currently running. The activity object inherits the Context object. Allows access to application-specific classes and resources and information about the application’s environment.
How does an Android app interact with other apps?
An Android app typically has multiple activities. Each activity displays a user interface that allows you to perform a specific task (such as viewing a map or taking a photo). To get the user from one activity to another, your application must use an intent to define your application’s “intent” to do something.
When to use an activity as context?
Before we dive into why and how not to use an activity as a context, we need to know about all the different contexts available to us and what makes them different. They represent the most used context in an Android app and serve different purposes. You can use them in the following situations: