How to get height of LinearLayout

Question

I have a LinearLayout set height as match_parent as below:

<LinearLayout
    android:id="@+id/list_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

I want to get the height of this LinearLayout.
I used the code below:

LinearLayout ll_list = (LinearLayout)findViewById(R.id.list_layout);
int h = ll_list.getHeight();

But it return null.
How can I do?

unless you're going to have a background task optimizing bitmaps (or something similar) before showing them on the screen, I really can't thing on any moment any would need this value. If you could tell us a bit more about your application, we might be able to point you to a better design alternative. — Budius, Aug 15 '12 at 08:26
http://stackoverflow.com/a/41705445/5664529 check this out, it may help you. — Siddhesh Shirodkar, Jan 17 '17 at 20:00

Dmitry Zaytsev · Accepted Answer · 2015-03-11T09:47:38.100

42

First of all: your LinearLayout id is left_layout, not list_layout.

Also, ll_list.getHeight() will return 0 (as well as ll_list.getWidth()) if it's not drawed yet.

Solution would be to get the height after your view is layouted:

ll_list.post(new Runnable(){
    public void run(){
         int height = ll_list.getHeight();
    }
});

And make sure that your ll_list is final.

edited Mar 11 '15 at 09:47

answered Aug 15 '12 at 05:46

Dmitry Zaytsev

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@brian it's not your problem. Just make sure that you're calling `getHeight()` after view is drawed. – Dmitry Zaytsev Aug 15 '12 at 05:48
@brian I've provided an example – Dmitry Zaytsev Aug 15 '12 at 05:50
Is there any way to force android to draw the layout. I need the layout height in onCreateView(). – KasparTr Apr 14 '16 at 14:21

score 1 · Answer 2 · answered Aug 15 '12 at 05:40

1

LinearLayout ll_list = (LinearLayout)findViewById(R.id.list_layout);
                                                       ^^^^^^^^^^

answered Aug 15 '12 at 05:40

Samir Mangroliya

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may be he typed wrong in the question. it wouldn't even compile if that was the case – Archie.bpgc Aug 15 '12 at 05:44
see your xml file name and also change id and then check it – Samir Mangroliya Aug 15 '12 at 05:45

score 1 · Answer 3 · answered Jul 05 '17 at 11:45

1

You need to wait View to be initialized first use View Tree Observer it waits until the view is created check out this

get layout height and width at run time android

answered Jul 05 '17 at 11:45

How to get height of LinearLayout

3 Answers3

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