Question

I have some trouble with fragment I got an error that says:

Binary XML file line #2 Error: inflating class fragment.
Cause by: Java.lan.NullPointerException: name == null

This is my binary file:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
    <fragment
        android:id="@+id/fragment_content"
        android:name="com.livetrekker.fragments.WelcomeFragment"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_weight="1" />
</LinearLayout>

Then my FragmentActivity:

public class SetupWizard extends FragmentActivity{
    public void onCreate(Bundle bundle){
        super.onCreate(bundle);
        setContentView(R.layout.activity_wizardsetup);
        FragmentManager fragmentManager = getSupportFragmentManager();
        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();

        WelcomeFragment wf = new WelcomeFragment();
        fragmentTransaction.add(R.id.fragment_content, wf);

        fragmentTransaction.commit();
    }
}

And Finally my fragment:

Public class WelcomeFragment extends Fragment {
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){
        return inflater.inflate(R.layout.welcomelivetrekker,container, false);
    }
}

I have imported the Android.support.v4.app.Fragment to both of my file and check out on the internet, but none of the solution is working.

Answer 1

Your activity_wizardsetup.xml should look something like this:

<android.support.v4.view.ViewPager xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/pager"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">
</android.support.v4.view.ViewPager>

Then your fragment_content.xml should look something to this effect:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/test"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical" />

</LinearLayout>

I believe that should fix it… in my code i use a FragmentPagerAdapter rather than FragmentTransaction or FragmentManager… but i think fixing the xml up will work…