Scrollview does not work outside LinearLayout with Viewpager

Question

My layout file:

<?xml version="1.0" encoding="utf-8"?> <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent" android:fillViewport="true"> <LinearLayout android:id="@+id/root_layout" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical" > <ImageView android:id="@+id/imageViewPage" android:layout_width="match_parent" android:layout_height="200dp" android:src="@drawable/zelenjavne_jedi"/> <android.support.v4.view.ViewPager android:id="@+id/viewpager" android:layout_width="match_parent" android:layout_height="wrap_content"> <android.support.design.widget.TabLayout android:id="@+id/sliding_tabs" android:layout_width="match_parent" android:layout_height="wrap_content"/> </android.support.v4.view.ViewPager> </LinearLayout> </ScrollView>

No matter how I change height to fill_parents, wrap_content, match_parent etc, if I use other views such as Relative instead of Linear it still doesn't work.

The above is not working. Picture Top is image view, bot are 2 fragments which i enter by swiping right / left. I cannot scroll down in picture. — jm18457
– jm18457, Commented Nov 15, 2017 at 17:27
WrapContent will wrap the content of the viewpager, not sure if it calculates after ou add views, but in your case, maybe the ImageView could be out of scroll and you add the viewpager directly, since it already have scroll — Marcos Vasconcelos
– Marcos Vasconcelos, Commented Nov 15, 2017 at 21:56

jm18457 · Accepted Answer · 2017-11-15 18:14:49Z

Solution found here

Have to set layout_height attribute to dp value such as this:

<android.support.v4.view.ViewPager android:id="@+id/viewpager" android:layout_width="match_parent" android:layout_height="500dp">

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