What is different between getContext and getActivity from Fragment in support library?

Question

What is different between getContext() and getActivity() from Fragment in support library?

Do they always return the same obje

Answer 1

/**
     * Return the {@link Context} this fragment is currently associated with.
     */
    public Context getContext() {
        return mHost == null ? null : mHost.getContext();
    }

    /**
     * Return the {@link FragmentActivity} this fragment is currently associated with.
     * May return {@code null} if the fragment is associated with a {@link Context}
     * instead.
     */
    final public FragmentActivity getActivity() {
        return mHost == null ? null : (FragmentActivity) mHost.getActivity();
    }

from source code, we can find that when a fragment is attached to an Activity, getContext returns null. While getActivity returns null when a fragment is attached to context instead