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I have some classes within my application that need to call Android functions that require the Context as a parameter. I don't have it as the class is not a subclass of the Activity class.
What is the correct way to tackle this problem?
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In case, when you have 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 live longer than any other likely Context you have at your disposal.
it's the context of current state of the application/object. It lets newly-created objects understand what has been going on. Typically, you call it to get information regarding another part of your program (activity and package/application).
They are both instances of Context, but the application instance is tied to the lifecycle of the application, while the Activity instance is tied to the lifecycle of an Activity. Thus, they have access to different information about the application environment.
It depends on the role of the class. But anyway pass ApplicationContext but not Activity one. If you pass Activity context gc can't remove it from the memory when after you don't need activity anymore. But application context is used while application was not finished by OS.Refer Avoid Memory Leaks
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