Develop Reference

NestedScrollView does not scroll

I have two list views in nested-scroll view and I want both the list views to scroll as one. This is what I implemented but I do not see any scroll, can someone tell me what is wrong
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.NestedScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/gcm_list_item_header_bg"
android:fillViewport="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<ListView
android:id="#+id/lv1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:nestedScrollingEnabled="false"
>
</ListView>
<ListView
android:id="#+id/lv_disabled_activities"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:nestedScrollingEnabled="false"
>
</ListView>
</LinearLayout>
</android.support.v4.widget.NestedScrollView>

Remove this line from nestedScrollView android:fillViewport="true"
Edit
If you want to see full height of each listView follow this link... and use this method.. to set height of listview based on children listview and recyclerview doesnot wrap content with count

layout_weight is not working in scroll view

I am trying to use this code but its not working when i put layout weight.If i remove layout weight and enter height for image view,it works fine.
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="10">
<ImageView
android:id="#+id/informative_image_view"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="3.7"
android:scaleType="fitXY"></ImageView>
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler_view_option_menu"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="6.3" />
</LinearLayout>
</ScrollView>

Actually you don't need scrollview. Remove it. And if you are using recyclerview inside scrollview then you need to specify height in dp of list to make it work properly.

NestedScrollView could not scroll with match_parent height child

I implement NonSwipeableViewPager with a fragment has NestedScrollView like this, what I expect is that the scrollview can scroll up and show 2 textviews:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<include
android:id="#+id/header"
android:layout_width="match_parent"
android:layout_height="match_parent"
layout="#layout/header" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="16dp"
android:src="#drawable/ic_up" />
</RelativeLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Text 1" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Text 2" />
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
But it could not scroll, I tried many ways but still did not get any solution

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
This linearlayout should have android:layout_height="wrap_content".
Reason for that is that if the scrollview's child is the same size as the scrollview itself (both match_parent for height) it means that there is nothing to scroll through, since they are of same size and the scrollview will only be as high as the screen.
If the linearlayout has a height of wrap_content then the height is not related to the height of the screen and the scrollview will be able to scroll through it.
Just remember that a scrollview can only have 1 direct child, and that child needs android:layout_height="wrap_content"

In my case app:layout_behavior="#string/appbar_scrolling_view_behavior" this is working only if some one face problem will be try it and may be solve your problem too. you should add also android:fillViewport="true" but without this my code working.
<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:background="#drawable/subscription_background"
app:layout_behavior="#string/appbar_scrolling_view_behavior">

For me it worked when i added "android:layout_marginBottom="100dp"" for last child in androidx.core.widget.NestedScrollView

if you have used netedscrollview as follow you have to use
android:scrollbars="vertical"
<androidx.core.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="0dp"
app:layout_constraintTop_toBottomOf="#id/toolbar_updateUserDetails"
app:layout_constraintBottom_toBottomOf="parent"
android:fillViewport="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:scrollbars="vertical"
>
</LinearLayout>
</androidx.core.widget.NestedScrollView>

You have to calculate your other child because last child binding on nestedScrollView. You add margin like child height. It is working.

Horizontal ScrollView in fragment Android

I would like to make my ScrollView filling out the full layout of a fragment and scrolling horizontally, not vertically.
How can I achieve that?!
Like the album covers
Thanks

Its not vertically, it is horizontally
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<HorizontalScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
// Add your ImageButtons
</LinearLayout>
</HorizontalScrollView>

You have to set the scrollview to
android:fillViewport="true"
Below is the complete code
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/myscrollView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
</ScrollView>

How do you make a LinearLayout scrollable?

I have lot of items on the screen and I need to use the scrollbar so the user can scroll down. However, the scroll is either not visible or it's not working. How is it possible to add a scrollbar to a LinearLayout?

Wrap the linear layout with a <ScrollView>
See here for an example:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android">
<ScrollView
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<!-- Content here -->
</LinearLayout>
</ScrollView>
</LinearLayout>
Note: fill_parent is deprecated and renamed to match_parent in API Level 8
and higher.

<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/scroll"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:id="#+id/container"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</LinearLayout>
</ScrollView>

You need to wrap your linear layout with a scroll view
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/scroll"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
</LinearLayout>
</ScrollView>

This can be done using the tag <ScrollView>. For ScrollView, one thing you have to remind that, ScrollView must have a single child.
If you want your full layout to be scrollable then add <ScrollView> at the top. Check the example given below.
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/scroll"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<!-- Content here -->
</LinearLayout>
</ScrollView>
But if you want some part of your layout to be scrollable then add <ScrollView> within that part. Check the example given below.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="400dp">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<!-- Content here -->
</LinearLayout>
</ScrollView>
</LinearLayout>

Here is how I did it by trial and error.
ScrollView - (the outer wrapper).
LinearLayout (child-1).
LinearLayout (child-1a).
LinearLayout (child-1b).
Since ScrollView can have only one child, that child is a linear layout. Then all the other layout types occur in the first linear layout. I haven't tried to include a relative layout yet, but they drive me nuts so I will wait until my sanity returns.

you need to use the following attribute and enclose it within the linear layout
<LinearLayout ...>
<scrollView ...>
</scrollView>
</LinearLayout>

You need to place ScrollView as the first child of Layout file and now put your linearlayout inside it. Now, android will decide on the basis of content and device size available whether to show a scrollable or not.
Make sure linearlayout has no sibling because ScrollView can not have more than one child.

<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<---------Content Here --------------->
</LinearLayout>
</ScrollView>
</LinearLayout>

Whenever you wanted to make a layout scrollable, you can use <ScrollView> With a layout or component in it.

You can add an atrribute in linearLayout : android:scrollbars="vertical"