Develop Reference

Android Scrollview content size smaller when should be

I want to have a "fixed_space" at the top of screen and a "scrollview" at the bottom of the screen which should be below fixed_space. The rest of the screen is a container "rest_space".
Unfortunately my scrollview has a shorter height(by 100dp which fixed_space has) ,if content is too big/scrollable.
I tried to achieve same with ConstraintLayout and RelativeLayout, but I have got same result.
Any ideas why scrollview has 100dp shorter height, as it should be?
EDIT: Scrollview should take as much space as she needs.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<View
android:id="#+id/fixed_space"
android:layout_width="match_parent"
android:layout_height="100dp"
android:background="#android:color/holo_red_dark" />
<View
android:id="#+id/rest_space"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="#android:color/black" />
<ScrollView
android:id="#+id/scrollview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/holo_green_dark"
android:fillViewport="true">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="START OF SCROLLVIEW \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nMIDDLE OF SCROLLVIEW \n\n\n\n\n\n\n\n\n\n\n\nEND OF SCROLLVIEW" />
</ScrollView>
</LinearLayout>

Try this:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<View
android:id="#+id/fixed_space"
android:layout_width="match_parent"
android:layout_height="100dp"
android:background="#android:color/holo_red_dark" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<View
android:id="#+id/rest_space"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/scrollview"
android:background="#android:color/black" />
<ScrollView
android:id="#+id/scrollview"
android:layout_alignParentBottom="true"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/holo_green_dark"
android:fillViewport="true">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="START OF SCROLLVIEW \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nMIDDLE OF SCROLLVIEW \n\n\n\n\n\n\n\n\n\n\n\nEND OF SCROLLVIEW" />
</ScrollView>
</RelativeLayout>
</LinearLayout>

Ok, I think this should solve your probem:
First, I started by using RelativeLayout. I did it in order to get the fixed_space aligned to the top and the scrollview aligned to the bottom.
Then I changed the View for a LinearLayout and put a TextView within it so I could use wrap_content and this is the tricky part:
When you use ScrollView with wrap_content and a View with the weight stuff, Android can't make the calculations it needs to get the screen drawed because there is no reference. When I put the TextView with wrap_content itself that gives the reference because Android know the size of the text.
You don't have to use the TextView but you will need anything that gives Android that reference.
In this case, the scrollview is going to be stretched, not the LinearLayout. If you want the second to get strached, then I'm afraid you are going to need to set a fixed height to your scrollview.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<View
android:id="#+id/fixed_space"
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_alignParentTop="true"
android:background="#android:color/holo_red_dark" />
<LinearLayout
android:id="#+id/rest_space"
android:layout_below="#+id/fixed_space"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/black">
<TextView
android:text="Test"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
<ScrollView
android:id="#+id/scrollview"
android:layout_below="#id/rest_space"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/holo_green_dark"
android:layout_alignParentBottom="true">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="START OF SCROLLVIEW \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nMIDDLE OF SCROLLVIEW \n\n\n\n\n\n\n\n\n\n\n\nEND OF SCROLLVIEW" />
</ScrollView>
</RelativeLayout>

Relative Layout inside a ScrollView - Not scrolling

I have a relative layout as child of Scrollview. I already tried a bunch of answers in here but the scroll isn't working.
That's my xml file:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView 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:scrollbars="none"
android:fillViewport="true"
android:background="#drawable/home_bg_branco" >
<RelativeLayout
android:id="#+id/relative_categoria"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ImageView
android:id="#+id/categoria_placeholder_slider_listview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="-3dp"
android:contentDescription="#string/home_placeholder_slider"
android:src="#drawable/home_placeholder_slider"
android:visibility="visible" />
<ImageSwitcher
android:id="#+id/home_imageswitcher_slider_listview"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_alignBottom="#id/categoria_placeholder_slider_listview"
android:layout_alignLeft="#id/categoria_placeholder_slider_listview"
android:layout_alignRight="#id/categoria_placeholder_slider_listview"
android:layout_alignTop="#id/categoria_placeholder_slider_listview"
android:scaleType="fitXY" />
<ListView
android:id="#+id/listViewCategoria"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/home_imageswitcher_slider_listview"
tools:ignore="NestedScrolling" >
</ListView>
<ImageView
android:id="#+id/categoria_cores_listview"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/categoria_placeholder_slider_listview"
android:layout_alignParentEnd="true"
android:layout_alignParentLeft="true"
android:contentDescription="#string/img_cores"
android:src="#drawable/img_cores" />
<ImageView
android:id="#+id/categoria_destaque_listview"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignStart="#id/categoria_placeholder_slider_listview"
android:contentDescription="#string/img_destaques"
android:src="#drawable/img_destaques" />
</RelativeLayout>
</ScrollView>
Another thing: i disabled the listview scroll to avoid conflicts.
Thanks in advance!

You should change layout_height of the RelativeLayout to match_parent:
<RelativeLayout
android:id="#+id/relative_categoria"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
Also remove android:fillViewport="true" from ScrollView.
In my project I have several ScrollViews exactly like this, and they work fine:
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
>
UPDATE
One last thing I can propose is to remove ListView from the ScrollView as it can interfere with layout and scrolling.

Add this line to your onCreate()
getActivity().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE|WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);

Android: top menu bar + scrollview?

I'm new with Android (used to develop with Visual Studio...) and so far I have a doubt with the layouts:
What I want to do is a layout with a bar at the top (just to put some button or extra information) and a scroll view that fills the rest of the screen.
This is the way I am doing it so far:
<RelativeLayout 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"
tools:context=".Home" >
<LinearLayout
android:id="#+id/linearLayout1"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:background="#android:color/white" >
<!-- I can put any button or text I want in here -->
</LinearLayout>
<ScrollView
android:id="#+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="50dp"
android:background="#drawable/wallpaper" >
</ScrollView>
This is working as I expected, but my question is if I'm doing it the correct way or should I do it in a better way (most efficient).
Thanks in advance

Absolute positioning isn't recommended. For example, if you need to increase the height from 50dp to 100dp, you will have to change this value in several different places.
I know at least 2 ways to improve your layout.
1) Use features of RelativeLayout (android:layout_below="#id/linearLayout1" or its counterpart layout_above)
<RelativeLayout ...>
<LinearLayout
android:id="#+id/linearLayout1"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:background="#android:color/white">
</LinearLayout>
<ScrollView
android:id="#+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/linearLayout1"
android:fillViewport="true"
android:background="#drawable/wallpaper" >
</ScrollView>
</RelativeLayout>
2) Replace by LinearLayout (and use android:layout_weight="1.0")
<LinearLayout ...>
<LinearLayout
android:id="#+id/linearLayout1"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:background="#android:color/white">
</LinearLayout>
<ScrollView
android:id="#+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="0dip"
android:layout_weight="1.0"
android:fillViewport="true"
android:background="#drawable/wallpaper" >
</ScrollView>
</LinearLayout>
The line android:layout_height="0dip" may look strange. Actually you can use match_parent, but Eclipse IDE highlights such line and recommends to use 0dip if you have specified android:layout_weight.
Also I added android:fillViewport="true" to your scrollview. It indicates that the content inside the scrollview will expand to the full height if it is necessary, you can read about this property here

linear layouts not spacing correctly

Hey im having trouble with these linear layouts in android xml. initially i did them in a relative layout and it worked fine, but after some research i discovered that relative layouts inside of a scrollview doesnt work supposedly. so now after much tweaking my imageview shows up but has a huge margin above and below it and my textview doesnt even show up aside from being where its supposed to in the graphics editor but blank.
so whats wrong? should i even be using a linear layout?
this is roughly what its supposed to look like http://www.mediafire.com/view/?z945tz2vrb2x46t
and this is what it looks like after Abdul and Ralgha's help as well as setting the base linear layout's height to wrap content http://www.mediafire.com/view/?px17q2z3yyeo8az
Thanks
<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" >
<ScrollView
android:id="#+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:id="#+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
<TextView
android:id="#+id/today"
android:src="#string/today"
android:textSize="30dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
/>
<ImageView
android:id="#+id/image1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:src="#drawable/weeklylist_blocks"
/>
</LinearLayout>
</ScrollView>
</LinearLayout>
`![screwed up layout][1]

Don't worry about weight right now, leave it removed. In your TextView, change "android:src" to "android:text" (without the quotes naturally). If that alone doesn't solve it, remove the textSize line and see what happens. If that works, then you can start playing with sizes (and weights if needed).
Also, textSize should be given in sp rather than dp. sp is for text, dp is for everything else, though that's not what is causing your problem.
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:id="#+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
>
<TextView
android:id="#+id/today"
android:textSize="30sp"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:text="#string/today"
/>
<ImageView
android:id="#+id/image1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="#drawable/weeklylist_blocks"
/>
</LinearLayout>
</ScrollView>

android:layout_weight="1"
might be the cause of your problems

Its works like charm, Use the following coding to achieve your thing:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center_vertical"
android:orientation="vertical" >
<ScrollView
android:id="#+id/scrollView1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:fillViewport="true" >
<LinearLayout
android:id="#+id/LinearLayout1"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal"
android:orientation="vertical" >
<TextView
android:id="#+id/today"
android:src="#string/today"
android:textSize="30sp"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:text="#string/today"
/>
<ImageView
android:id="#+id/image1"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:contentDescription="#string/nissan"
android:src="#drawable/weeklylist_blocks" />
</LinearLayout>
</ScrollView>
</LinearLayout>

no gravity for scrollview. how to make content inside scrollview as center

I want the content inside the scrollView as center.
<ScrollView
android:id="#+id/scroller"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingTop="12dp"
android:paddingBottom="20dp"
android:scrollbarStyle="outsideOverlay"
android:layout_gravity="center" >
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="check"
android:gravity="center_vertical|center_horizontal"/>
</ScrollView>
Note: there is no android:gravity attribute for scrollvew.
any sol:-

I had the same issue and finally figured it out. This is for a vertical ScrollView.
Put your ScrollView inside a RelativeLayout and center it in the RelativeLayout. In order for this to work, your ScrollView should have
android:layout_height="wrap_content"
This is how the final code should look like:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ScrollView
android:id="#+id/scrollView1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_centerVertical="true" >
<LinearLayout
android:id="#+id/linearLayout1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="b1"/>
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="b2"/>
<Button
android:id="#+id/button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="b3"/>
</LinearLayout>
</ScrollView>
</RelativeLayout>

How about this?
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/scrollView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingTop="12dp"
android:paddingBottom="20dp"
android:scrollbarStyle="outsideOverlay" >
<LinearLayout
android:id="#+id/linearLayout1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_gravity="center"
android:gravity="center">
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="check"
android:gravity="center_vertical|center_horizontal"/>
</LinearLayout>
</ScrollView>

I think a more elegant solution would be to use the ScrollView's android:fillViewport property. A ScrollView is a little different in how it treats it's content view (can only have one), even if you set match_parent (fill_parent) to the ScrollView it won't give that much spacing to it's content view, instead the default behavior is for the ScrollView to wrap the content regardless of what you specify for that view. What android:fillViewport does is tell the ScrollViewto stretch its content to fill the viewport (http://developer.android.com/reference/android/widget/ScrollView.html#attr_android:fillViewport). So in this case, your LinearLayout would be stretched to match the viewport and if the height goes behind the viewport then it will be scrollable which is exactly what you want!
The accepted answer won't work properly when the content extends beyond the ScrollView because it will still center the content view first causing it to cut off a portion of the view, and the ScrollView centered in another layout works but just doesn't feel right, besides I think it will also result in a lint error (useless parent or something along those lines).
Try something like this:
<ScrollView
android:id="#+id/scroller"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingTop="12dp"
android:paddingBottom="20dp"
android:scrollbarStyle="outsideOverlay"
android:fillViewport="true">
<LinearLayout
android:id="#+id/content"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:gravity="center">
<Button
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="check" />
</LinearLayout>
</ScrollView>
Just remember that the reason it is being centered here now is because of the android:gravity on the LinearLayout since the ScrollView will stretch the LinearLayout so keep that in mind depending on what you add to the layout.
Another good read on ScrollView although not about centering but about fillViewport is http://www.curious-creature.org/2010/08/15/scrollviews-handy-trick/

Use this attribute in ScrollView
android:fillViewport="true"
Example
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbarStyle="outsideOverlay"
android:fillViewport="true"
>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<!--Your Code goes here-->
</RelativeLayout>
</ScrollView>
Make sure to use Single Child in ScrollView just like in above example which is Relativelayout.

For #Patrick_Boss - what stopped the content from cutting of in my application was to change the gravity and layout_gravity to center_horizontal for the LinearLayout.
It worked for me...but not sure if it will work for you.
Modification of #Ghost's answer -
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/scrollView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingTop="12dp"
android:paddingBottom="20dp"
android:scrollbarStyle="outsideOverlay" >
<LinearLayout
android:id="#+id/linearLayout1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_gravity="center_horizontal"
android:gravity="center_horizontal">
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="check"
android:gravity="center_vertical|center_horizontal"/>
</LinearLayout>
</ScrollView>

One thing to consider is what NOT to set. Make certain your child controls, especially EditText controls, do not have the RequestFocus property set.
This may be one of the last interpreted properties on the layout and it will override gravity settings on its parents (layout or ScrollView).

using the scroll view inside the ConstraintLayout. It is worked for me
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/white">
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" />
</ScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>
Scroll view height should be wrap_content
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"