ActionBar Sherlock ViewPager on fragment

Question

when I select the tabs upward it works, but when I go back the content becomes white. LogCat shows:

FATAL EXCEPTION: main java.lang.IllegalArgumentException: No view found for id 0x7f040070 (com..:id/list_news_frame_*) for fragment FeedPlayerNews*Fragment{4055c188 #4 id=0x7f040070} at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:903) at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1088) at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682) at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1444) at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:461) at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141) at android.support.v4.view.ViewPager.populate(ViewPager.java:1012) at android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:523) at android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:495) at android.support.v4.view.ViewPager.setCurrentItem(ViewPager.java:476) at com...viewpager.TabsAdapter.onTabSelected(TabsAdapter.java:76) at com.actionbarsherlock.internal.app.ActionBarImpl.selectTab(ActionBarImpl.java:526) at com.actionbarsherlock.internal.app.ActionBarImpl$TabImpl.select(ActionBarImpl.java:907) at com.actionbarsherlock.internal.widget.ScrollingTabContainerView$TabClickListener.onClick(ScrollingTabContainerView.java:504) at android.view.View.performClick(View.java:2506) at android.view.View$PerformClick.run(View.java:9112) at android.os.Handler.handleCallback(Handler.java:587) at android.os.Handler.dispatchMessage(Handler.java:92) at android.os.Looper.loop(Looper.java:130) at android.app.ActivityThread.main(ActivityThread.java:3835) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:507) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:864) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:622) at dalvik.system.NativeStart.main(Native Method)

My class:

public class TabsAdapter extends FragmentPagerAdapter implements
        ActionBar.TabListener, ViewPager.OnPageChangeListener {
    private final Context mContext;
    private final ActionBar mActionBar;
    private final ViewPager mViewPager;
    private final ArrayList<TabInfo> mTabs = new ArrayList<TabInfo>();
    ProgressDialog dialog;

    static final class TabInfo {
        private final Class<?> clss;
        private final Bundle args;

        TabInfo(Class<?> _class, Bundle _args) {
            clss = _class;
            args = _args;
        }
    }

    public TabsAdapter(SherlockFragmentActivity activity, ViewPager pager) {
        super(activity.getSupportFragmentManager());
        mContext = activity;
        mActionBar = activity.getSupportActionBar();
        mViewPager = pager;
        mViewPager.setAdapter(this);
        mViewPager.setOnPageChangeListener(this);
    }

    public void addTab(ActionBar.Tab tab, Class<?> clss, Bundle args) {
        TabInfo info = new TabInfo(clss, args);
        tab.setTag(info);
        tab.setTabListener(this);
        mTabs.add(info);
        mActionBar.addTab(tab);
        notifyDataSetChanged();
    }

    public int getCount() {
        return mTabs.size();
    }

    public SherlockFragment getItem(int position) {
        TabInfo info = mTabs.get(position);
        return (SherlockFragment) Fragment.instantiate(mContext,
                info.clss.getName(), info.args);
    }

    public void onPageScrolled(int position, float positionOffset,
            int positionOffsetPixels) {
    }

    public void onPageSelected(int position) {
        mActionBar.setSelectedNavigationItem(position);
    }

    public void onPageScrollStateChanged(int state) {
    }

    public void onTabSelected(Tab tab, FragmentTransaction ft) {
        mViewPager.setCurrentItem(tab.getPosition());
        Object tag = tab.getTag();
        for (int i = 0; i < mTabs.size(); i++) {
            if (mTabs.get(i) == tag) {
                mViewPager.setCurrentItem(i);
            }
        }
    }

    public void onTabUnselected(Tab tab, FragmentTransaction ft) {
    }

    public void onTabReselected(Tab tab, FragmentTransaction ft) {
    }

}

UPDATE:

the method which holds the viewpager:

public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        ConnectionChangeReceiver cm = new ConnectionChangeReceiver();
        cm.onReceive(this, getIntent());

        mViewPager = new ViewPager(this);
        mViewPager.setId(R.id.viewpager);
        setContentView(mViewPager);

        RssReaderTask.setRssUrl(this,
                "http://url?type=rss");
        SchedulerManager.getInstance().saveTask(this, "0 9-20 * * 1,2,3,4,5",
                RssReaderTask.class);
        SchedulerManager.getInstance().restart(this, RssReaderTask.class);


        NotifyClass.getInstance().setSlideCreate(true);

        if (!isOnline()) {
            showDialog(DIALOG_ERROR_CONNECTION);
            Log.d("TAG", "TRUE");
        }

        if ((getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) >= Configuration.SCREENLAYOUT_SIZE_LARGE) {
            // do nothing
        } else {
            this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
        }
        globalvar = new GlobalVariable();
        globalvar.set_radio_encours_global(false);
        globalvar.setOnHold_global(false);

        mTabsAdapter = new TabsAdapter(this, mViewPager);

        bar = getSupportActionBar();
        bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
        bar.setDisplayShowTitleEnabled(false);
        bar.setDisplayShowHomeEnabled(false);

        mTabsAdapter.addTab(bar.newTab().setText("Tab1"),
                Tab1.class, null);
        mTabsAdapter.addTab(bar.newTab().setText("Tab2"), Tab2.class,
                null);
        mTabsAdapter.addTab(bar.newTab().setText("Tab3 "),
                Tab3.class, null);
        mTabsAdapter.addTab(bar.newTab().setText("Tab4"),
                Tab4.class, null);

    }

Nickolaus Nickolaus · Accepted Answer · 2013-01-21T17:22:55

Your class is ok, it should be working, I am using the same and it works... I think there is a problem in your activity/fragment which holds the viewpager, so I suggest tocheck your onCreate/onCreateView method.
if you can't find anything, post the code from this method or the code of the class if the named method is not the reason for the error.

ActionBar Sherlock ViewPager on fragment

1 Answers