Question

I have a tabHost based app, with fragments,
It works fine if I use my fragments with a LinearLayout

but I need to have a list on one of the tabs views [fragment]

but the app crashes because is not correctly inflated:
my class [tab view Fragment]:

public class Tab2Fragment extends Fragment { //primera pregunta, lo puedo hacer asi o con FragmentActivity
//public class Tab2Fragment extends ListFragment { //primera pregunta, lo puedo hacer asi o con FragmentActivity


    private FragmentManager fm;
    private ListFragment list;
    private List<Map<String, String>> listItems;
    private String[] froms;
    private int[] viewIds;

    /* (non-Javadoc)
     * @see android.support.v4.app.Fragment#onCreateView(android.view.LayoutInflater, android.view.ViewGroup, android.os.Bundle)
     */


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        if (container == null) {
            // We have different layouts, and in one of them this
            // fragment's containing frame doesn't exist.  The fragment
            // may still be created from its saved state, but there is
            // no reason to try to create its view hierarchy because it
            // won't be displayed.  Note this is not needed -- we could
            // just run the code below, where we would create and return
            // the view hierarchy; it would just never be used.
            return null;
        }
        return (LinearLayout)inflater.inflate(R.layout.tab_frag2_layout, container, false);
    }



}

my xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" 
    android:background="#00FF00">

        <fragment
        android:name="android.support.v4.app.ListFragment"
        android:id="@+id/List"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"/>

</LinearLayout>

the error:

05-31 22:39:58.412: E/AndroidRuntime(2796): FATAL EXCEPTION: main
05-31 22:39:58.412: E/AndroidRuntime(2796): android.view.InflateException: Binary XML file line #8: Error inflating class fragment
05-31 22:39:58.412: E/AndroidRuntime(2796):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:582)
05-31 22:39:58.412: E/AndroidRuntime(2796):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:618)
05-31 22:39:58.412: E/AndroidRuntime(2796):     at android.view.LayoutInflater.inflate(LayoutInflater.java:407)
05-31 22:39:58.412: E/AndroidRuntime(2796):     at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
05-31 22:39:58.412: E/AndroidRuntime(2796):     at com.orchard.elasto.Tab2Fragment.onCreateView(Tab2Fragment.java:54)
05-31 22:39:58.412: E/AndroidRuntime(2796):     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:870)

So, how to properly inflate the list?

should i do it with fragmentList, even when the tabHost is specting a Fragment?

public void onTabChanged(String tag) {
        TabInfo newTab = this.mapTabInfo.get(tag);
        if (mLastTab != newTab) {
            FragmentTransaction ft = this.getSupportFragmentManager().beginTransaction();
            if (mLastTab != null) {
                if (mLastTab.fragment != null) {
                    ft.detach(mLastTab.fragment);
                }
            }
            if (newTab != null) {
                if (newTab.fragment == null) {
                    newTab.fragment = Fragment.instantiate(this,
                            newTab.clss.getName(), newTab.args);
                    ft.add(R.id.realtabcontent, newTab.fragment, newTab.tag);
                } else {
                    ft.attach(newTab.fragment);
                }
            }

            mLastTab = newTab;
            ft.commit();
            this.getSupportFragmentManager().executePendingTransactions();
        }
    }

thanks a lot!!

Answer 1

Your problem is here:

   android:name="android.support.v4.app.ListFragment" 

You are telling it that the class that runs that fragment is ListFragment.

You need to change it to reference your class, and you need to make that class a ListFragment instead of a Fragment.

   android:name="your.package.name.Tab2Fragment"