Android SDK Fragment Support

android eclipse android-fragments android-tabactivity
Ice Phoenix picture Ice Phoenix · Jan 15, 2012 · Viewed 17.7k times · Source

Ok i'm just starting to get into Android programming now, and I'm following the android "TabActivity" tutorial: http://developer.android.com/reference/android/app/TabActivity.html. Everythings working but it can't seem to find some of the support classes, see the code below that is generating the errors.

    mTabManager.addTab(mTabHost.newTabSpec("simple").setIndicator("Simple"),
            FragmentStackSupport.CountingFragment.class, null);
    mTabManager.addTab(mTabHost.newTabSpec("contacts").setIndicator("Contacts"),
            LoaderCursorSupport.CursorLoaderListFragment.class, null);
    mTabManager.addTab(mTabHost.newTabSpec("custom").setIndicator("Custom"), 
            LoaderCustomSupport.AppListFragment.class, null);
    mTabManager.addTab(mTabHost.newTabSpec("throttle").setIndicator("Throttle"),
            LoaderThrottleSupport.ThrottledLoaderListFragment.class,null);

For FragmentStackSupport/LoaderCursorSupport/LoaderCustomSupport/LoaderThrottleSupport, it says for all of them cannot be resolved to a type. I've added the latest support library to a folder in the root directory named "libs" and also coppied it into "C:/Eclipse/v4/" directory. My import files are:

    import java.util.HashMap;
    import android.R;
    import android.content.Context;
    import android.os.Bundle;
    import android.support.v4.app.Fragment;
    import android.support.v4.app.FragmentActivity;
    import android.support.v4.app.FragmentTransaction;
    import android.support.v4.app.FragmentPagerAdapter;
    import android.view.View;
    import android.widget.TabHost;
    import cowdawg.hello_tab.namespace.R.layout;
    import cowdawg.hello_tab.namespace.R.id;

Could someone please offer me some advice on how to solve this, thanks :).

Answer

MH. picture MH. · Jan 15, 2012

It's probably because the following classes are not part of the standard Android API (or the support library), but only exist in the support demos sample code for demonstration purposes:

FragmentStackSupport.CountingFragment
LoaderCursorSupport.CursorLoaderListFragment
LoaderCustomSupport.AppListFragment
LoaderThrottleSupport.ThrottledLoaderListFragment

You will need to add these classes to your own project in order to be able to use them. Here you can find the source files under the subsection 'Files'.

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