How to scroll to bottom in a ScrollView on activity startup

Question

I am displaying some data in a ScrollView. On activity startup (method onCreate) I fill the ScrollView with data and want to scroll to the bottom.

I tried to use getScrollView().fullScroll(ScrollView.FOCUS_DOWN). This works when I make it as an action on button click but it doesn't work in the onCreate method.

Is there any way how to scroll the ScrollView to the bottom on activity startup? That means the view is already scrolled to the bottom when first time displayed.

This also explains why I was getting 0 all the time when I was trying to use getMeasuredWidth while initialising my own subclass of a ScrollView. — Ghoti, Jul 27 '12 at 15:01

score 221 · Accepted Answer · answered Jul 22 '10 at 15:07

221

It needs to be done as following:

    getScrollView().post(new Runnable() {

        @Override
        public void run() {
            getScrollView().fullScroll(ScrollView.FOCUS_DOWN);
        }
    });

This way the view is first updated and then scrolls to the "new" bottom.

answered Jul 22 '10 at 15:07

Palo

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1

I'm trying exactly this but it doesn't seem to work still... are you calling the above code in `onCreate` of the containing `Activity`? – pstanton Jul 20 '11 at 11:03
4

Instead post() use postDelayed() with 100ms delay. it will work from any activitys life-cycle point. – Vitaliy A Jun 03 '15 at 13:39

score 50 · Answer 2 · edited Mar 08 '13 at 04:48

50

Put the following code after your data is added:

final ScrollView scrollview = ((ScrollView) findViewById(R.id.scrollview));
scrollview.post(new Runnable() {
    @Override
    public void run() {
        scrollview.fullScroll(ScrollView.FOCUS_DOWN);
    }
});

edited Mar 08 '13 at 04:48

Community

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1

answered Dec 13 '12 at 12:52

Harshid

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50

5

For me this only worked with a postDelayed instead of post. Just 100 milliseconds of delay. – Andreas Rudolph Jun 20 '13 at 08:19
Perfect. Of course with combo with scrollview.fullScroll(ScrollView.FOCUS_UP); – ieselisra Jan 15 '15 at 01:46

score 32 · Answer 3 · edited Jan 16 '15 at 14:01

32

This works for me:

scrollview.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
    @Override
    public void onGlobalLayout() {
        scrollview.post(new Runnable() {
            public void run() {
                scrollview.fullScroll(View.FOCUS_DOWN);
            }
        });
    }
});

edited Jan 16 '15 at 14:01

Seraphim's

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answered Oct 31 '13 at 10:02

sonida

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2

Best answer for this question so far. Lots of other approaches are conditional but this one is awesome n works super fine :) – rana Nov 16 '16 at 23:05

score 16 · Answer 4 · answered Sep 03 '12 at 04:39

16

You can do this in layout file:

                android:id="@+id/listViewContent"
                android:layout_width="wrap_content"
                android:layout_height="381dp" 
                android:stackFromBottom="true"
                android:transcriptMode="alwaysScroll">

answered Sep 03 '12 at 04:39

Tam Dao

435
4
10

Not working for me – Vlad Aug 06 '22 at 11:20

score 10 · Answer 5 · answered Nov 13 '17 at 10:37

10

 scrollView.postDelayed(new Runnable() {
        @Override
        public void run() {
            scrollView.fullScroll(ScrollView.FOCUS_DOWN);
        }
    },1000);

answered Nov 13 '17 at 10:37

Makvin

3,475
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score 5 · Answer 6 · answered May 14 '16 at 20:35

5

Try this

    final ScrollView scrollview = ((ScrollView) findViewById(R.id.scrollview));
    scrollview.post(new Runnable() {
       @Override
       public void run() {
         scrollview.fullScroll(ScrollView.FOCUS_DOWN);
       }
    });

answered May 14 '16 at 20:35

F.O.O

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score 3 · Answer 7 · answered Sep 07 '15 at 08:58

3

Right after you append data to the view add this single line:

yourScrollview.fullScroll(ScrollView.FOCUS_DOWN);

answered Sep 07 '15 at 08:58

LEMUEL ADANE

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score 3 · Answer 8 · edited Mar 12 '18 at 14:49

This is the best way of doing this.

scrollView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
        @Override
        public void onGlobalLayout() {
            scrollView.post(new Runnable() {
                @Override
                public void run() {
                    scrollView.fullScroll(View.FOCUS_DOWN);
                }
            });
        }
});

score 2 · Answer 9 · answered Feb 14 '17 at 13:58

After initializing your UI component and fill it with data. add those line to your on create method

Runnable runnable=new Runnable() {
        @Override
        public void run() {
            scrollView.fullScroll(ScrollView.FOCUS_DOWN);
        }
    };
    scrollView.post(runnable);

How to scroll to bottom in a ScrollView on activity startup

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