I've been working with lots of Fragments
recently and have been using two distinct methods of passing in objects to the Fragments, but the only difference that I can see is that in the approach taken by FragmentOne below, the object you pass in must implement the Serializable
interface (and everything associated with that).
Are there any benefits to using one over the other?
public class FragmentOne extends Fragment {
public static final String FRAGMENT_BUNDLE_KEY =
"com.example.FragmentOne.FRAGMENT_BUNDLE_KEY";
public static FragmentOne newInstance(SomeObject someObject) {
FragmentOne f = new FragmentOne();
Bundle args = new Bundle();
args.putSerializable(FRAGMENT_BUNDLE_KEY, someObject);
f.setArguments(args);
return f;
}
public SomeObject getSomeObject() {
return (SomeObject) getArguments().getSerializable(FRAGMENT_BUNDLE_KEY);
}
}
and
public class FragmentTwo extends Fragment {
SomeObject mSomeObject;
public static FragmentTwo newInstance(SomeObject someObject) {
FragmentTwo fragment = new FragmentTwo();
fragment.setSomeObject(someObject);
return fragment;
}
public void setSomeObject(SomeObject someObject) {
mSomeObject = someObject;
}
}
There are 3 ways to pass objects to a fragment
They are:
setArguments
with Serializable
objects is the slowest way (but okay for small objects, I think) and you have automatic state restoration.Parcelable
is a fast way (prefer it over 2nd one if you have collection of elements to pass), and you have automatic state restoration.http://developer.android.com/reference/android/os/Parcelable.html