In Android programming, what exactly is a
Putting it simply:
As the name suggests, 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).
You can get the context by invoking
this (when in the activity class).
Typical uses of context:
Creating new objects: Creating new views, adapters, listeners:
TextView tv = new TextView(getContext()); ListAdapter adapter = new SimpleCursorAdapter(getApplicationContext(), ...);
Accessing standard common resources: Services like LAYOUT_INFLATER_SERVICE, SharedPreferences:
context.getSystemService(LAYOUT_INFLATER_SERVICE) getApplicationContext().getSharedPreferences(*name*, *mode*);
Accessing components implicitly: Regarding content providers, broadcasts, intent