android - scrollview inside viewpager not scrolling -


i have small vertical scrollview inside viewpager horizontal swippable pages. problem not able scroll through pages swiping horizontally on scrollview. want able swipe horizontally on scrollview scroll through viewpager's pages , have function swipe vertically scroll through scrollview's contents.

i don´t know if it's same case, had similar problem have described. have looked everywhere find answer: https://stackoverflow.com/a/35180360/1969966.

basically, if activity structure above example:

<?xml version="1.0" encoding="utf-8"?> <android.support.design.widget.coordinatorlayout     xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:app="http://schemas.android.com/apk/res-auto"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent">      <android.support.design.widget.appbarlayout         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:theme="@style/themeoverlay.appcompat.dark.actionbar">          <android.support.v7.widget.toolbar             android:id="@+id/toolbar"             android:layout_width="match_parent"             android:layout_height="?attr/actionbarsize"             android:background="?attr/colorprimary"             android:elevation="4dp"             android:theme="@style/themeoverlay.appcompat.actionbar"             app:popuptheme="@style/themeoverlay.appcompat.light"/>          <android.support.design.widget.tablayout             android:id="@+id/tab_layout"             android:layout_width="match_parent"             android:layout_height="wrap_content"             android:layout_below="@+id/toolbar"             android:background="?attr/colorprimary"             android:elevation="6dp"             android:minheight="?attr/actionbarsize"             app:tabmode="fixed"             android:theme="@style/themeoverlay.appcompat.dark.actionbar"/>          <android.support.v4.view.viewpager xmlns:android="http://schemas.android.com/apk/res/android"             xmlns:tools="http://schemas.android.com/tools"             android:id="@+id/pager"             android:layout_width="match_parent"             android:layout_height="match_parent"             android:layout_below="@+id/toolbar"             tools:context="net.voidynullness.android.tabitytabs.tablayoutactivity"                                            android:background="#ffffff"/>      </android.support.design.widget.appbarlayout>      <android.support.design.widget.floatingactionbutton         android:id="@+id/fab"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_gravity="bottom|end"         android:layout_margin="@dimen/fab_margin"         android:src="@android:drawable/ic_dialog_info"/> </android.support.design.widget.coordinatorlayout>

change (look "android.support.design.widget.appbarlayout"):

<?xml version="1.0" encoding="utf-8"?> <android.support.design.widget.coordinatorlayout     xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:app="http://schemas.android.com/apk/res-auto"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent">      <android.support.design.widget.appbarlayout         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:theme="@style/themeoverlay.appcompat.dark.actionbar">          <android.support.v7.widget.toolbar             android:id="@+id/toolbar"             android:layout_width="match_parent"             android:layout_height="?attr/actionbarsize"             android:background="?attr/colorprimary"             android:elevation="4dp"             android:theme="@style/themeoverlay.appcompat.actionbar"             app:popuptheme="@style/themeoverlay.appcompat.light"/>          <android.support.design.widget.tablayout             android:id="@+id/tab_layout"             android:layout_width="match_parent"             android:layout_height="wrap_content"             android:layout_below="@+id/toolbar"             android:background="?attr/colorprimary"             android:elevation="6dp"             android:minheight="?attr/actionbarsize"             app:tabmode="fixed"             android:theme="@style/themeoverlay.appcompat.dark.actionbar"/>     </android.support.design.widget.appbarlayout>          <android.support.v4.view.viewpager xmlns:android="http://schemas.android.com/apk/res/android"             xmlns:tools="http://schemas.android.com/tools"             android:id="@+id/pager"             android:layout_width="match_parent"             android:layout_height="match_parent"             android:layout_below="@+id/toolbar"             tools:context="net.voidynullness.android.tabitytabs.tablayoutactivity"                                            android:background="#ffffff"/>      <android.support.design.widget.floatingactionbutton         android:id="@+id/fab"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_gravity="bottom|end"         android:layout_margin="@dimen/fab_margin"         android:src="@android:drawable/ic_dialog_info"/> </android.support.design.widget.coordinatorlayout>

now, you'll able swipe horizontally , vertically!


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