Android: creating a linearlayout in new Activity programmatically

Question

I'm trying to create a LinearLayout in another activity called MainFragment. Inside onCreate function I'm using the line

LinearLayout parent = new LinearLayout(MainFragment.this);

using this shows same error

error:

LinearLayout (andorid.content.Context) in LinearLayout cannot be applied to (com.example.name.nav_bar.MainFragment)

If I try the code in MainActivity it works fine.

LinearLayout constructor needs a Context, while a Fragment is not a subclass of Context, and Activity is a subclass of Context. — Vladyslav Matviienko
– Vladyslav Matviienko, Commented Nov 1, 2018 at 15:11
You can use either one -- LinearLayout parent = new LinearLayout(getContext); LinearLayout parent = new LinearLayout(getActivity); — Quantum_VC
– Quantum_VC, Commented Nov 1, 2018 at 15:21

Ben P. · Accepted Answer · 2018-11-01 15:17:21Z

2

Try this instead:

LinearLayout parent = new LinearLayout(getActivity());

When working with Fragments for the first time, it's important to understand how they are different from Activities. One of these ways is that an Activity is an Android Context, but a Fragment is not. Many things depend on having a Context to work with, so if you're inside a Fragment you need some way to get access to a Context. The easiest way is often to call getActivity() (since, again, an Activity is a Context).

answered Nov 1, 2018 at 15:17

Ben P.

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