在ScrollView中滚动TabHost + ViewPager

Question

我使用ObservableScrollView作为父布局，我可以根据滚动父级的方式滚动内容（类似于Google I / O 2014应用）。一切都按预期工作，直到我将Tabhost with Viewpager作为ObservableScrollView的孩子添加。现在我可以滚动Viewpager的内容，但不能滚动父Scrollview。我认为问题在于焦点。如何将父ObservableScrollView Scrollable与Viewpager和Tabhost一起放在里面？

感谢。

<com.rfit.views.ObservableScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/scroll_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/WhiteSmoke"
android:fillViewport="true"
android:overScrollMode="never">

<FrameLayout
    android:id="@+id/scroll_view_child"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:clipChildren="false">

    <!-- Background photo -->
    <FrameLayout
        android:id="@+id/session_photo_container"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:foreground="@drawable/photo_banner_scrim">

        <ImageView
            android:id="@+id/session_photo"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="@color/LightGrey"


            android:scaleType="centerCrop" />
    </FrameLayout>

    <LinearLayout
        android:id="@+id/details_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/WhiteSmoke"
        android:clipToPadding="false"
        android:orientation="vertical"
        android:paddingLeft="@dimen/keyline_1"

        android:paddingRight="@dimen/keyline_1"
        android:paddingTop="16dp">









            <TabHost
                android:id="@android:id/tabhost"
                android:layout_width="match_parent"


                android:layout_height="wrap_content" >

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"

                    android:orientation="vertical" >

                    <TabWidget
                        android:id="@android:id/tabs"
                        android:orientation="horizontal"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_weight="0" />

                    <FrameLayout
                        android:id="@android:id/tabcontent"
                        android:layout_width="0dp"
                        android:layout_height="0dp"
                        android:layout_weight="0">


                    </FrameLayout>

                    <android.support.v4.view.ViewPager

                        android:id="@+id/viewpager"
                        android:layout_width="match_parent"
                        android:layout_height="match_parent"
                        android:layout_gravity="bottom" />







                </LinearLayout>
            </TabHost>







    </LinearLayout>

    <!-- Title/subtitle bar (floating; position determined at run time as the content view scrolls) -->
    <FrameLayout
        android:id="@+id/header_session"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:clipChildren="false"
        android:clipToPadding="false">

        <!-- height assigned dynamically -->
        <View
            android:id="@+id/header_background"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:background="@color/revofit_eat" />




        <LinearLayout
            android:id="@+id/header_session_contents"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@color/revofit_eat"
            android:orientation="vertical"
            android:paddingBottom="16dp"
            android:paddingLeft="@dimen/keyline_2_session_detail"
            android:paddingRight="@dimen/keyline_1"
            android:paddingTop="16dp">

            <!-- Session title -->
            <TextView
                android:id="@+id/session_title"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_gravity="start"
                android:layout_marginBottom="0dp"
                android:ellipsize="end"
                android:fontFamily="@string/font_fontFamily_medium"
                android:lineSpacingMultiplier="1.1"
                android:maxLines="2"

                android:text="Bacon ipsum dolor sit amet chicken beef ribs kielbasa, tail bacon porchetta ground round voluptate sed aute shank meatball. Swine in andouille, ex esse duis fatback laboris ullamco frankfurter landjaeger. Beef ribs excepteur filet mignon meatloaf, jerky sausage esse beef meatball strip steak sint sunt et turducken bresaola. "
                android:textColor="@color/White"
                android:textSize="@dimen/text_size_large" />

            <!-- Session subtitle -->
            <TextView
                android:id="@+id/session_subtitle"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_gravity="start"
                android:ellipsize="end"
                android:maxLines="2"
                android:text="Dolor occaecat hamburger"
                android:textColor="@color/wallet_hint_foreground_holo_dark"
                android:textSize="16sp" />







        </LinearLayout>






        <View
            android:id="@+id/header_shadow"
            android:layout_width="match_parent"
            android:layout_height="6dp"

            android:layout_gravity="bottom"
            android:layout_marginBottom="-6dp"
            android:background="@drawable/bottom_shadow" />


    </FrameLayout>

    <!-- FAB -->
    <include layout="@layout/include_add_schedule_fab" />


</FrameLayout></com.rfit.views.ObservableScrollView>