I am not able to scroll in a scrollview which contains a listview and is filled dynamically as I get data from the webservice.
I am able to do scrolling in emulator through mouse wheel, but in avtual device I can not scroll the list.
The attributes of scrollview are
<ScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginTop="10dp"
android:layout_weight="0.6"
android:fillViewport="true"
android:orientation="vertical"
android:padding="6.0dip"
android:scrollbarAlwaysDrawVerticalTrack="true"
android:scrollbarFadeDuration="5000"
android:scrollbarSize="20dp"
android:scrollbarStyle="insideOverlay"
android:scrollbars="vertical" >
<LinearLayout
android:id="#+id/linearLayout2"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center_vertical"
android:orientation="vertical"
android:padding="2dp" >
<ListView
android:id="#+id/listbox_list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="599.84"
android:minHeight="250dp" >
</ListView>
</LinearLayout>
</ScrollView>
Please help me soon
by just looking at the layout_width and layout_height of your elements, it's clear that your scrollview will not scroll. unless you have a fixed height listview, never put a listview inside a scrollview (or in this case, a listview inside a layout that sits inside a scrollview).
I don't have any links to back this up right now, but it's not possible, and a well-known 'problem'. If you google a bit, or search here on SO, you'll find a number of topics covering this.
The problem arises in most cases when you have a scrolling view inside another scrolling view in the same direction. Consider the following example:
You have Two lists inside of a ScrollView.
Both lists are exactly one screen tall.
How do you scroll down to the second list?
When scrolling, how will your layout know if you are scrolling the list or the container?
This is basically the question that is the cause, and the only official solution is that it is as it should be, and there won't be a fix. Usually it is enough to have either a ListView or a ScrollView, but I have faced cases when you must have a listview in a scrollview (in my case a client wanted an iPhone-like datespinner in a scrolling page).
I solved it by using a FrameLayout, containing a custom ScrollView, and a ListView on top of that. Then in the code for the custom ScrollView, I added a line in the onScroll method that updated the top margin of the ListView, to psuh it upwards or downwards as the user scrolled. Surprisingly it worked.
NOTE: remember that:
The ListView handles its own scroll. If all you need is a scrolling
list, you do not need a ScrollView.
If you need a layout with a list and space for buttons or other
views, consider creating your layout so that the list only covers
enough space for you to fit your other views below/above without
scrolling.
Add following in your linear layout
android:scrollbars="vertical"
android:scrollbarAlwaysDrawVerticalTrack="true"
Related
I have a ListView inside ScrollView, the ListView works fine (it scrolls) but the ScrollView is not scrolling
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
</ScrollView>
</LinearLayout>
I want the full page to scroll (The textview should also scroll)
TextView
ListView
item1
item2
.
.
The full page must scroll along with the textview!
This will never work because your listView is effectively a scrollView, so you have a scrollView within a scrollView. Is the textView of fixed size or can it be a large amount of text? I would consider some redesign here as this is not a very good way to design a UI.
If the textView is big which means you only see a small bit of the list then you should be able to scroll by touching the textView only, but i would make the scrollView the Parent and remove the first LinearLayout, it is not needed
Instead of ListView switch to RecyclerView and inside your MainActivity.java in onCreate() do this recyclerView.setNestedScrollingEnabled(false);
You should never use a ScrollView with a ListView, because ListView takes care of its own vertical scrolling. Most importantly, doing this defeats all of the important optimizations in ListView for dealing with large lists, since it effectively forces the ListView to display its entire list of items to fill up the infinite container supplied by ScrollView.
The TextView class also takes care of its own scrolling, so does not require a ScrollView, but using the two together is possible to achieve the effect of a text view within a larger container.
I have a data set and I need to show them using ListView and TableLayout in same xml file.As both ListView and TableLayout are much longer,I decide to use scrollView. I knew that android scrollview can only have one child. So I Coded as follows.
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="8">
<LinearLayout
android:id="#+id/showClaim_layout2"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_alignParentBottom="true"
android:orientation="vertical">
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/claimList"
android:layout_margin="5dp">
</ListView>
<TableLayout
android:id="#+id/showClaimTable"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#FFEBCD"
android:layout_margin="5dp"
android:shrinkColumns="0">
</TableLayout>
</LinearLayout>
</ScrollView>
When I run the program it's ok. I mean page is scrolling. But it doesn't work as I expected!I need to show all the list element and after end of the list, tableLayout must be show.If the screen size is not enough then we can scroll the page and see the data.
In here ListView does not show all elements of the List and TableLayout show all tableRaws inside ScrollView.
Can anyone tell me that where I got wrong or any other way to do my task easily.
Thanks.
As far as I know, you should never put a ListViewinside a ScrollView, since they implement their own scrolling behavior. Consider changing your design.
"I knew that android scrollview can only have one child." Correct but you forget that that one child should have a height of wrap_content.
Also #haint is correct ListView has its own Scrolling Behavior. Still try android:layout_height="wrap_content" for your LinearLayout
I think you can fix it by using the
layout_weight
set layout_weight for your ListView to 1 and for TableLayour set it to 0;
Be sure after changing set layot*:height to 0dp;
You can check below articles.
first-
second-
I have a ListView inside of a ScrollView - but my issue is that I don't want the Listview to scroll, instead I want the listview to be fully expanded and just scroll the ScrollView up and down to see the items of the ListView. Can someone recoment a solution?
Here is my layout:
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_horizontal"
>
<ListView
android:id="#+id/user_list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:divider="#null"
android:visibility="gone" />
</ScrollView>
P.S. I know that this is bad practice but I need this thing anyway
set this property in your scrollview android:fillViewport="true" it will work
two scrolling views cannot be inside one another.
Follow the following link:
ListView inside ScrollView is not scrolling on Android
You can consider this. But the ListView's height must be hard coded and it does recycling which slightly deviates from your requirement. But ListView without recycling, as you mentioned, is not a good practice. So try to achieve the thing with recycling as described in the above link.
I want to create a sort of card layout with cards that contain a ListView layout inside a HorizontalScrollableView that can scroll the cards horizontally. Everything is working but I have problem with scrolling. I can scroll the listview vertically only if I am not scrolling the cards horizontally and viceversa.
This is the main container:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<HorizontalScrollView
android:id="#+id/listview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#ddd" >
<LinearLayout
android:id="#+id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent" android:orientation="horizontal" >
</LinearLayout>
</HorizontalScrollView>
</RelativeLayout>
I inflate and add the listview items to the linear layout.
I would like to allow vertical and horizontal scrolling smoothly without these kind of limitations (simultaneous horizontal and vertical scrolling).
How can I achieve this?
Check out this, might help you implement custom two-way scrolling layout.
https://github.com/ened/Android-Tiling-ScrollView/blob/master/src/asia/ivity/android/tiledscrollview/TwoDScrollView.java
If you want any of ListView features though (like view recycling, filtering, adapters) - things are going to get more complicated.
I would suggest you to take ViewFlipper to give scroll effect horizontally. Then add ListView to flipper as a child. Use gesture to move it right and left.
ListView will still scroll vertically and if you are not able to set OnItemClickListener to ListView then you can use SingleTap method of Gesture.
ListView inside View flipper discussion 1 and ListView inside View Flipper Discussio 2
I would suggest having your horiziontallayout as the root view you return in getView() in you adapter. That way each row will scroll separate from each other. If that doesn't work right away you may have to setItemsCanFocus(true) for your rows to give the input to your horizontalscrollview.
I would like to use horizontall scrolling items in a vertically scrolling Listview.
My naive take on this was to put the contents of the listview items inside a scrollView. The items are wider horizontally than the scrollview, but not higher than the scrollview. Since the listview is a normal vertically scrolling listview, I figured that dragging vertically would scroll in the list, while dragging horizontally would scroll in the items.
However that didn't work. The list scrolls fine vertically and shows the items correctly, but scrolling horizontally does not work (nothing happens). Unfortunately I am really not sure where to go from here.
Note that the items should scroll horizontally independently of the other items, i.e the whole list should not scroll sideways when dragging sideways.
As a reference, I would like the list to behave similar to what it does in the app 'Pulse', in case you have seen it.
Make ordinary ListView with any adapter you like but design the item Layout something like this:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<HorizontalScrollView
android:id="#+id/hor_scroll"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<LinearLayout
android:id="#+id/lin"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageView
android:id="#+id/icon"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_marginRight="6.0dip"
android:layout_alignParentTop="true"
android:layout_alignParentBottom="true"
android:focusable="false" />
<TextView
android:textAppearance="?android:textAppearanceMedium"
android:gravity="center_vertical"
android:id="#+id/text"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:singleLine="true"
android:layout_toRightOf="#id/icon"
android:layout_alignParentTop="true"
android:layout_alignParentBottom="true" />
</LinearLayout>
</HorizontalScrollView>
</RelativeLayout>
You'll have Vertically Scrollable ListView with Horizontally Scrollable items. And the items are scrolled independantly from other items.
You need to use a HorizontalScrollView. Droidstack is an open source app (I wrote) that does just this (in the questions lists you can scroll the tags on each question), if you want a concrete example.
if you follow the good practices of android development, you should never put a ScrollView inside a ListView, is unrecomended bu Romain Guy and other people from android development, to read the arguments read here: Android ScrollView layout problem
from the android docs:
"You should never use a HorizontalScrollView with a ListView, since ListView takes care of its own scrolling. Most importantly, doing this defeats all of the important optimizations in ListView for dealing with large lists, since it effectively forces the ListView to display its entire list of items to fill up the infinite container supplied by HorizontalScrollView."
EDIT: it seems that the warning posted above is an error from the android documentation, talking with some colleagues they told me its possible. The issue in the documentation is here, http://code.google.com/p/android/issues/detail?id=2781.
my appologies
You can use "ViewPager" each element in the list can be a ViewPager