What does getActivity() mean?

Question

What does getActivity() mean? I saw in somewhere, they wrote MainActivity.this.startActionMode(mActionModeCallback) instead of getActivity(). could someone explain what this two lines mean?

  someView.setOnLongClickListener(new View.OnLongClickListener() {         // Called when the user long-clicks on someView         public boolean onLongClick(View view) {             if (mActionMode != null) {                 return false;             }              // Start the CAB using the ActionMode.Callback defined above             mActionMode = getActivity().startActionMode(mActionModeCallback);             view.setSelected(true);             return true;         }     }); 

Answer 1

Two likely definitions:

• getActivity() in a Fragment returns the Activity the Fragment is currently associated with. (see http://developer.android.com/reference/android/app/Fragment.html#getActivity()).
• getActivity() is user-defined.

Answer 2

getActivity() is used for fragment. For activity, wherever you can use this, you can replace the this in fragment in similar cases with getActivity().