layout height problem with ViewPager

[Andecy]

I use ScrollableLayout in a TabLayout+ViewPager,and ScrollableLayout has a LinearLayout(with Tablayout+ViewPager), if the ScrollableLayout in first page of tab,the height is ok,or else can see ScrollableLayout

[noties]

Can you show me your XML layout, please?

[Andecy]

the parent XML:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              xmlns:tl="http://schemas.android.com/apk/res-auto"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:background="@color/default_background"
              android:orientation="vertical">

    <com.flyco.tablayout.SlidingTabLayout
        android:id="@+id/stl_sliding"
        style="@style/TabLayout.Section"
        android:layout_height="48dp"
        tl:tl_indicator_color="@color/primary"
        tl:tl_tab_padding="@dimen/padding_tv_ic_drawable"
        tl:tl_tab_space_equal="true"
        tl:tl_textSelectColor="@color/primary"
        tl:tl_textUnselectColor="@color/secondary_text"
        tl:tl_underline_color="@color/default_background"
        tl:tl_underline_gravity="BOTTOM"
        tl:tl_underline_height="1px"/>

    <android.support.v4.view.ViewPager
        android:id="@+id/vp_sliding"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"/>
</LinearLayout>

and it's first child:

<ru.noties.scrollable.ScrollableLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/sl_analysis_task"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:scrollable_autoMaxScroll="true"
    app:scrollable_autoMaxScrollViewId="@+id/fl_analysis_task_chart"
    app:scrollable_closeUpAnimationMillis="250"
    app:scrollable_closeUpAnimatorInterpolator="@android:anim/accelerate_decelerate_interpolator"
    app:scrollable_considerIdleMillis="125"
    app:scrollable_defaultCloseUp="true"
    app:scrollable_friction="0.075"
    app:scrollable_scrollerFlywheel="false">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <FrameLayout
            android:id="@+id/fl_analysis_task_chart"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@color/primary_dark"/>

        <com.flyco.tablayout.SlidingTabLayout
            android:id="@+id/stl_topic"
            style="@style/TabLayout.Topic"
            android:layout_width="match_parent"
            android:layout_height="48dp"
            android:paddingLeft="5dp"
            android:paddingRight="5dp"
            app:tl_indicator_color="#393E46"
            app:tl_indicator_corner_radius="5dp"
            app:tl_indicator_margin_left="2dp"
            app:tl_indicator_margin_right="2dp"
            app:tl_indicator_style="BLOCK"/>

    </LinearLayout>

    <android.support.v4.view.ViewPager
        android:id="@+id/vp_topic"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginTop="48dp"/>

</ru.noties.scrollable.ScrollableLayout>

[noties]

I think that you, if it's applicable, should change your layouts to be flat, because having ViewPager inside another ViewPager is a error-prone thing anyway. Why won't you make ScrollableLayout the root layout and then apply your tabs/pages logic there?