Converting an activity to a Fragment in android
Earlier I developed an android application
using the Activity. But now the trend is to develop the android application
using the Fragments. So I thought of converting the Activity based android
application to Fragment based Android application. Earlier I thought it’s very
difficult to do it. But It’s very simple. Here are the steps how we convert an activity to a Fragment:
using the Activity. But now the trend is to develop the android application
using the Fragments. So I thought of converting the Activity based android
application to Fragment based Android application. Earlier I thought it’s very
difficult to do it. But It’s very simple. Here are the steps how we convert an activity to a Fragment:
1. First we need to import the package:
FragmentActivity of Support V4 app package:
FragmentActivity of Support V4 app package:
Import android.support.v4.app.FragmentActivity;
2. Change the extends Activity to extends
Fragment. Eg:
Fragment. Eg:
public class HomeFragment extends Fragment{
}
3. Add the method onCreateView and move
everything from onCreate of Activity to onCreateView except super.onCreate()
and setContentView()
everything from onCreate of Activity to onCreateView except super.onCreate()
and setContentView()
public View
onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState) {
onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState) {
View
v = null;
v = null;
v
= inflater.inflate(R.layout.fragment_home, parent, false);
= inflater.inflate(R.layout.fragment_home, parent, false);
// Content of previous onCreate() here
// …
// Don’t use this
method, it’s handled by inflater.inflate() above :
method, it’s handled by inflater.inflate() above :
// setContentView(R.layout.fragment_home);
return v;
}
4. Remove
method onCreate().
method onCreate().
5. Everywhere
you access the Activity with “this” or just something or “this.something” replace
with super.getActivity(). or use the value saved in the onCreateView
you access the Activity with “this” or just something or “this.something” replace
with super.getActivity(). or use the value saved in the onCreateView
Example : Intent i = getIntent();
becomes Intent i =
super.getActivity().getIntent();
super.getActivity().getIntent();
That’s it. Happy Coding…