Ognev Zair Ognev Zair - 11 days ago 6
Android Question

NestedScrollView scroll down itself when content is fills

I have xml, which consits of

DrawerLayout
,
CoordinatorLayout
with
custom views
,
AppBarLayout
,
NestedScrollView
.

Problem: When content in
NestedtScrollView
fills,
NestedtScrollView
scrolls down itself.
All researches like
scrollView.setScrollY(0)
or custom class for
layout_behavior = FixedScrollingViewBehavior
didn't help me.

How do i prevent this scrolling

<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/drawer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">


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

<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/main_content"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">

<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:background="@color/semitransparet_color_primary">

<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/actionbar_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:minHeight="?attr/actionBarSize"
app:layout_scrollFlags="scroll|enterAlways"
app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
app:elevation="4dp"/>

</android.support.design.widget.AppBarLayout>

<ProgressBar
android:id="@+id/progress"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"/>
<android.support.v4.widget.NestedScrollView
android:id="@+id/product_scroll_wrpr"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:visibility="gone">

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

// my content is here

</LinearLayout>


</android.support.v4.widget.NestedScrollView>



</android.support.design.widget.CoordinatorLayout>

<LinearLayout
android:id="@+id/buttons_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:visibility="gone"
android:background="#01579B"
android:layout_gravity="bottom"
android:orientation="horizontal"
android:padding="8dp"
android:gravity="center_vertical">

// here are my buttons

</LinearLayout>

<android.support.design.widget.NavigationView
android:id="@+id/navi"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
android:background="@android:color/white"
app:headerLayout="@layout/drawer_header_left"
app:menu="@menu/nav_drawer_menu"/>




my build.gradle consits

compile 'com.android.support:support-v4:23.1.0'

compile 'com.android.support:design:23.0.1'

Answer

Try to set android:descendantFocusability="blocksDescendants" to the LinearLayout inside NestedScrollView. It works for me.