<android.support.design.widget.TabLayout
    android:id="@+id/sliding_tabs"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:tabMaxWidth="0dp"
    app:tabGravity="fill"
    android:paddingBottom="5dp"
    />

<android.support.v4.view.ViewPager android:id="@+id/places_viewpager"
                                   xmlns:android="http://schemas.android.com/apk/res/android"
                                   android:layout_width="match_parent"
                                   android:layout_height="match_parent"
    android:layout_below="@id/sliding_tabs">
</android.support.v4.view.ViewPager>

<ProgressBar
    android:id="@+id/discover_progressbar"
    android:layout_width="50dp"
    android:layout_height="50dp"
    android:layout_centerInParent="true"
    android:visibility="gone"/>

void saveAndShowPlaces(List<Place> places, String searchQuery, AddressMap map, Discover discover) {
    if (places != null && !places.isEmpty()) {

        Query savedQuery = saveDiscoverySession(places, searchQuery, discover, getDB());
        mQueries.add(savedQuery);

        mQueriesDone.put(searchQuery, true); // mark this search query as done

        // if all queries are complete, load pager & notify dataset changed
        if (!mQueriesDone.containsValue(false)) {
            pagerStripTabLocations(mLocationQuery);
            if (mActiveTabListener != null && mActiveTabListener.queryFound(mQueries))
                pagerResetData(mActiveTabListener.getTabIndex());
            else
                pagerResetData();

            if (mProgressBarVisible) {
                ProgressBarUtils.hideProgressBar(mProgressBar);
                mProgressBarVisible = false;
            }
        }
    } else {
        showBlankView(mBlankTextView, null, String.format("No places were found for search: %s", searchQuery));
    }
    synchronized (mLock) {
        mDiscoverSearchActive = false;
    }

    /*if (mProgressBarVisible)
        mProgressBar.setVisibility(View.GONE);*/
}

void pagerResetData() {
    pagerResetData(0);
}

void pagerResetData(int showTab) {
    mPagerAdapter.setQueries(mQueries);
    mPagerAdapter.notifyDataSetChanged();
    if (showTab > 0 && showTab < mPagerAdapter.getCount()) {
        mPager.setCurrentItem(showTab, true);
    }

    // never show empty view if a query exists
    if (mQueries != null && !mQueries.isEmpty()) {
        ProgressBarUtils.hideMessage(mBlankTextView);
    }
    Log.d(TAG, "notifyDataSetChanged() called from pagerResetData()");
}

IllegalStateException for com.implementedknowledge.playlocation
java.lang.IllegalStateException: The application's PagerAdapter changed the adapter's contents without calling PagerAdapter#notifyDataSetChanged! Expected adapter item count: 0, found: 1 Pager id: com.implementedknowledge.playlocation:id/places_viewpager Pager class: class android.support.v4.view.ViewPager Problematic adapter: class com.implementedknowledge.letseat.PlacesPagerAdapter
    at android.support.v4.view.ViewPager.populate(ViewPager.java:1167)
    at android.support.v4.view.ViewPager.populate(ViewPager.java:1116)
    at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1642)
    at android.view.View.layout(View.java:15583)
    at android.view.ViewGroup.layout(ViewGroup.java:4966)
    at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1076)
    at android.view.View.layout(View.java:15596)
    at android.view.ViewGroup.layout(ViewGroup.java:4966)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:508)
    at android.view.View.layout(View.java:15596)
    at android.view.ViewGroup.layout(ViewGroup.java:4966)
    at android.support.v7.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:437)
    at android.view.View.layout(View.java:15596)
    at android.view.ViewGroup.layout(ViewGroup.java:4966)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:508)
    at android.view.View.layout(View.java:15596)
    at android.view.ViewGroup.layout(ViewGroup.java:4966)
    at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1703)
    at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1557)
    at android.widget.LinearLayout.onLayout(LinearLayout.java:1466)
    at android.view.View.layout(View.java:15596)
    at android.view.ViewGroup.layout(ViewGroup.java:4966)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:508)
    at android.view.View.layout(View.java:15596)
    at android.view.ViewGroup.layout(ViewGroup.java:4966)
    at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2072)
    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1829)
    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1054)
    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5779)
    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
    at android.view.Choreographer.doCallbacks(Choreographer.java:580)
    at android.view.Choreographer.doFrame(Choreographer.java:550)
    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
    at android.os.Handler.handleCallback(Handler.java:739)
    at android.os.Handler.dispatchMessage(Handler.java:95)
    at android.os.Looper.loop(Looper.java:135)
    at android.app.ActivityThread.main(ActivityThread.java:5223)
    at java.lang.reflect.Method.invoke(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:372)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)