Android height wrap_content with fix ratio

Question

My XML file has a LinearLayout containing two ListView with android:height="wrap_content". However, when one of the ListView has too much contents, it pushes another ListView and eat up its space. What can I do to make it stops pushing at certain height? I've tried adding layout-weight or maxHeight but it doesn't help.

If you want to use `layout-weight`, try to set height as `match_parent` or 0dp — PriyankVadariya, Aug 16 '18 at 11:35
@PriyankVadariya interesting...what is the difference between `match_parent` and 0dp? Laptop isn't with me so I can't test this out. It would be great if you could explain. — Jeff, Aug 16 '18 at 12:36

score 0 · Answer 1 · answered Aug 16 '18 at 11:42

0

If you want the same amount for both ListViews equally divided, just put them in a LinearLayout.

LinearLayout will have property weightSum=2 while both ListViews will have, depending on the LinearLayout orientation property:

If vertical -> both ListViews will have android:height="0dp" and layout-weight=1

If horizontal -> both ListViews will have android:width="0dp" and layout-weight=1

answered Aug 16 '18 at 11:42

Alessandro Mautone

873
7
11

hi, I want them to expand at their will but stop expanding at some point. `android:height="0dp"` would fix their height respective to weight. – Jeff Aug 17 '18 at 02:01

score 0 · Answer 2 · edited May 26 '20 at 13:52

Try this :

<LinearLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="@drawable/green_bg_duplicate"
    android:gravity="center"
    android:orientation="vertical"
    android:weightSum="2">

    <RecyclerView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:weightSum="1" />

    <RecyclerView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:weightSum="1" />

</LinearLayout>

score 0 · Accepted Answer · answered Aug 18 '18 at 07:42

0

I solved it by doing it programmatically. It seems XML doesn't give much control for dynamic height. I added onLayoutChangedListener to both ListView to detect height change and add height control logic in the listener.

answered Aug 18 '18 at 07:42

Jeff

293
4
13

Android height wrap_content with fix ratio

3 Answers3