use findViewById(R.id.fragment).setVisibility(View.GONE);
On Wednesday, March 9, 2011 3:34:31 PM UTC+5:30, clemp6r wrote: > > Hi, > > I can't remove a Fragment that was added in an XML layout file, using > a FragmentTransaction. I don't understand why, I probably > misunderstood something and I would appreciate some explanations. > > ---- > Here's a simple code to demonstrate my problem : > > ** Main layout, main.xml: > <LinearLayout xmlns:android="http://schemas.android.com/apk/res/ > android" > android:orientation="vertical" > android:layout_width="fill_parent" android:layout_height="fill_parent" > android:id="@+id/root" > > > <TextView android:id="@+id/hello_view" > android:layout_width="fill_parent" > android:layout_height="wrap_content" > android:text="@string/hello" > /> > > <fragment android:name="test.fragments.FragmentA" > android:id="@+id/fragment_a" > android:layout_width="fill_parent" > android:layout_height="wrap_content" > /> > </LinearLayout> > > ** Main activity: > public class TestFragmentsActivity extends Activity { > > @Override > public void onCreate(Bundle savedInstanceState) { > super.onCreate(savedInstanceState); > setContentView(R.layout.main); > > TextView helloView = (TextView) > findViewById(R.id.hello_view); > helloView.setOnClickListener(new OnClickListener() { > > @Override > public void onClick(View v) { > FragmentManager fragmentManager = > getFragmentManager(); > FragmentTransaction transaction = > fragmentManager.beginTransaction(); > > transaction.remove(fragmentManager.findFragmentById(R.id.fragment_a)); > transaction.commit(); > } > }); > } > } > > ** My fragment class: > public class FragmentA extends Fragment { > > @Override > public View onCreateView(LayoutInflater inflater, ViewGroup > container, Bundle savedInstanceState) { > return inflater.inflate(R.layout.layout_a, container, > false); > } > } > > ** Fragment layout, layout_a.xml: > <LinearLayout xmlns:android="http://schemas.android.com/apk/res/ > android" android:layout_width="match_parent" > android:layout_height="match_parent"> > <TextView android:text="TextView A" android:id="@+id/ > textView1_a" android:layout_width="wrap_content" > android:layout_height="wrap_content"></TextView> > </LinearLayout> > ---- > > When I click on the text view, the fragment should be removed, but > nothing seems to happen. If I click again, the application crashes > with the following error messages: > > 03-09 09:48:09.248: ERROR/AndroidRuntime(1222): > java.lang.NullPointerException > 03-09 09:48:09.248: ERROR/AndroidRuntime(1222): at > android.app.BackStackRecord.remove(BackStackRecord.java:365) > 03-09 09:48:09.248: ERROR/AndroidRuntime(1222): at > test.fragments.TestFragmentsActivity > $1.onClick(TestFragmentsActivity.java:28) > > > Maybe it's not possible to remove fragments that were added using XML > layouts? > > Thanks in advance. -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
