Android - vertical orientation works, horizontal orientation blank

Question

I am implementing a ViewPagerIndicator that works as expected in vertical orientation. When I test in horizontal orientation, either by switching at run-time (physically turning the phone) or when the app starts in horizontal mode (phone was horizontal before the app started) I get a blank white space where the ViewPagerIndicator should be. I have a layout/main.xml and layout-land/main.xml with a few buttons that are displaying as expected (stacked vertically in vertical mode, as a grid in horizontal mode). When I press the "edit" button, I launch the edit activity:

public class ATEditActivity extends Activity {
    static final int OFFSCREEN_PAGE_LIMIT = 5;
ViewPager pager = null;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.edit);

        int iPage = 2;  // set the page based on caller's intentions
        Bundle bndlExtras = getIntent().getExtras();
        if (bndlExtras != null) {
        iPage = bndlExtras.getInt("PAGE");
        }

        ATViewPagerAdapter adapter = new ATViewPagerAdapter(this);

        pager = (ViewPager) findViewById(R.id.awesomepager);
        pager.setOffscreenPageLimit(OFFSCREEN_PAGE_LIMIT);
        pager.setAdapter(adapter);

        TitlePageIndicator indicator = (TitlePageIndicator) findViewById(R.id.TitlePageIndicator);
        indicator.setViewPager(pager);
        indicator.setCurrentItem(iPage);
    }
}

edit.xml:

<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:background="#FFFFFF"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:layout_marginLeft="0dp"
    android:layout_marginRight="0dp">

<EditText
    android:id="@+id/etName"
    android:inputType="textAutoComplete"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@drawable/edit_text"
    android:layout_margin="4dp"
    android:hint="@string/name" />

<com.viewpagerindicator.TitlePageIndicator
    android:id="@+id/TitlePageIndicator"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    style="@style/Widget.MyTitlepageIndicator" />

    <android.support.v4.view.ViewPager
        android:id="@+id/awesomepager"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</LinearLayout>

Any thoughts on why the ViewPagerIndicator would not display in horizontal mode? Is more information needed?

Answer 1

You probably need to override onConfigurationChanged() see reference as your app needs to retrieve the resources again and draw everything.

Answer 2

After three or four days of trying everything I could imagine, I finally decided there must have been something really messed up in my project so I created a new project that only had the minimal amount of code necessary to get the ViewPagerIndicator working. The new project is now working with both orientations "out-of-the-box". I have no idea what caused my old project to go haywire with only the horizontal orientation but I will get the new project on track and up to speed in short order now that it is working as expected.