Layout Weights do not work inside a ScrollView

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.

just put this in your scroll view:

android:fillViewport="true"

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" >