Layout Weights do not work inside a ScrollView

Question

I want to assign layout weights to several items within a LinearLayout inside of a ScrollView. However, the ScrollView ignores the LinearLayout weightSum.

My goal is to divide the layout with weights of 2, 1, 1 (for a total sum of 4), but this does not work properly inside of a ScrollView.

How can I solve this layout problem?

main.xml

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/scrollView1"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">

    <LinearLayout 
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="vertical" 
        android:weightSum="4">

        <LinearLayout android:id="@+id/logo"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical" 
            android:layout_weight="2"
            android:background="#FFFFFF" />

        <LinearLayout android:id="@+id/logo1"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical" 
            android:layout_weight="1"
            android:background="#000000" />


        <LinearLayout android:id="@+id/logobutton"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal" 
            android:layout_weight="1" 
            android:background="#4B4B4B" />

    </LinearLayout>
</ScrollView>

if i am removing only scrollview than is work but my question is if am use scrollview than is not work — MIP TECH, Apr 25 '12 at 08:57
check this one : [Android Layout Weight](http://stackoverflow.com/questions/4986861/android-layout-weight) I think it kind of the same problem. — user1264255, Apr 25 '12 at 08:57

score 169 · Accepted Answer · edited Mar 02 '18 at 15:32

169

I have faced this problem before. Just use android:fillViewport="true" in your ScrollView and it will fill up the screen.

<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:fillViewport="true" >

edited Mar 02 '18 at 15:32

Melquiades

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answered Apr 25 '12 at 09:12

Akhil

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@MIPTECH : try this answer. More info at romain guy's http://www.curious-creature.org/2010/08/15/scrollviews-handy-trick/ – Akhil Apr 25 '12 at 09:16
1

Thanks man, I was really looking for a solution and it is exactly what I needed. – Gintas_ Mar 19 '14 at 14:14
Works well in portrait, but not is a solution good in horitzontal, not work correctly – May 13 '15 at 07:23
Best Solution. Was really helpful. – Saraschandraa Sep 26 '15 at 14:31

score 3 · Answer 2 · edited Nov 04 '13 at 11:45

This won't work as you have done it. The child view of a ScrollView should be set to wrap_content. If you set it to fill_parent, it will fill the area of the ScrollView and never scroll, because it won't be larger than the ScrollView.

The idea of layout_weight is to fill a specific area proportionately.

You should set all of the child LinearLayouts layout_height to either wrap_content or a specific size (in dp) and the parent LinearLayout layout_height to wrap_content

As said you need to remove the additional

xmlns:android="http://schemas.android.com/apk/res/android"

if it's not the root (first) element of the layout.

score 1 · Answer 3 · answered Apr 12 '20 at 09:15

1

just put this in your scroll view:

android:fillViewport="true"

answered Apr 12 '20 at 09:15

Ali Keb

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score 0 · Answer 4 · edited Mar 10 '19 at 11:01

0

In my experience, fillviewport=true works bit strange.

I solved this problem by wrapping LinearLayout with another Layout like FrameLayout.

I hope this helps.

edited Mar 10 '19 at 11:01

Elletlar

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answered Mar 10 '19 at 08:50

Andy Sin

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Hi Andy. Welcome to StackOverflow. Thank you for your answer. But this answer is very thin on details. You should show a sample that demonstrates the wrapping that you mention. See these [Tips for answering](https://stackoverflow.com/help/how-to-answer). Thank you. – Elletlar Mar 10 '19 at 09:00

score 0 · Answer 5 · answered Jan 07 '20 at 09:37

0

Add below line in your ScrollView it will be work fine.

Only single child must be there for ScrollView

android:fillViewport="true"

answered Jan 07 '20 at 09:37

Manju S B

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Layout Weights do not work inside a ScrollView

5 Answers5

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