How to use fast scroll in android?

Question

I have a list of events which are seperated by month and year (Jun 2010, Jul 2010 etc.)

I want to enable fast scrolling because the list is really long.

How do I enable fast scroll on ListViews in Android?

score 98 · Answer 1 · edited Aug 06 '15 at 08:42

98

In the onCreate method of the ListActivity use setFastScrollEnabled:

getListView().setFastScrollEnabled(true);

edited Aug 06 '15 at 08:42

aleb

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answered Feb 21 '12 at 09:26

Maurice

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46

And note: it will be shown only if listview total height is 4x or more bigger than listview's visible height. – Pointer Null Mar 28 '12 at 03:20
1

@mice : Is any documentation regarding your comment? – Ravi Bhatt Dec 20 '12 at 05:36
2

Probably not documented, the condition is found in source code. – Pointer Null Dec 20 '12 at 09:01
@mice can you point to place in framework code where this condition is there. – anujprashar Feb 05 '13 at 12:37
4

FastScroller.MIN_PAGES: http://grepcode.com/file/repository.grepcode.com/java/ext/com.google.android/android/1.5_r4/android/widget/FastScroller.java – Pointer Null Feb 05 '13 at 13:11
1

What about `android:fastScrollAlwaysVisible="true"`? – Davor Jul 19 '13 at 19:25
@maurice How would you enable fast scrolling for a `FragmentActivity` containing a list fragment? – JJD Sep 06 '13 at 17:12
Here is how it works for [fragments](http://stackoverflow.com/questions/18663805/how-to-enable-fast-scrolling-for-a-list-fragment). – JJD Sep 06 '13 at 22:49

score 67 · Answer 2 · edited Aug 06 '15 at 08:15

67

Use android:fastScrollEnabled in your xml:

<ListView
    android:id="@+id/listview_files"
    ...
    android:fastScrollEnabled="true" >
</ListView>

edited Aug 06 '15 at 08:15

aleb

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answered Mar 30 '12 at 01:07

score 6 · Answer 3 · answered May 15 '13 at 10:46

Try the following

 <?xml version="1.0" encoding="utf-8"?>
    <resources>

    <style name="listviewfastscrollstyle" parent="android:Theme">
        <item name="android:fastScrollTrackDrawable">@drawable/listselector</item>
        <item name="android:fastScrollThumbDrawable">@drawable/listselector</item>
    </style>

</resources>

In your Manifest set the style like this:

<application android:icon="@drawable/icon" android:label="@string/app_name" android:theme="@style/CustomTheme">

this is the listview

 <ExpandableListView
        android:id="@android:id/list1"
        android:layout_width="match_parent"
        android:layout_height="0dip"
        android:layout_weight="1"
        android:drawSelectorOnTop="false"
        android:fastScrollAlwaysVisible="true"
        android:fastScrollEnabled="true"
         />

Okay can i do a fast scroll by date, i mean while performing fast scroll can i display the date of the record like one in call history — Rakshi, May 15 '13 at 11:24

score 4 · Answer 4 · edited May 23 '17 at 11:54

If you want to be able to customize your Fast-scroller, like choosing your own scroller image to appear, I recommend using this source:

https://github.com/nolanlawson/CustomFastScrollViewDemo/

Basically, your listview adapter will have to implement a sectionindexer. This section indexer can be very stripped if you don't want to complicate things and provide simple fastscrolling though the entire length of the list.

The direct source for the fastscroller is here:

https://github.com/nolanlawson/CustomFastScrollViewDemo/blob/master/src/com/nolanlawson/customfastscrollviewdemo/CustomFastScrollView.java

Place this view around your listview (nest your listview inside this view in your xml layout file) and set android:fastScrollEnabled="true" on your listview.

You might also want to check out a previous answer: Fast Scroll display problem with ListAdapter and SectionIndexer

score 1 · Answer 5 · answered Jul 08 '13 at 22:06

I wanted to do something similar to what you wanted to achieve. I bumped into this post. It is a great way to implement fast scrolling without using the standard Android AlphabetIndexer, which requires a Cursor you might not always have.

Basically, you would have to implement the SectionIndexer interface in your adapter. In your case, instead of the current letter, you would show the current period as you scroll.

score 1 · Answer 6 · answered May 25 '17 at 08:22

1

Within Layout File :

android:fastScrollEnabled="true"

You Can programmatically Enable Fast scroll bar:

getListView().setFastScrollEnabled(true);

answered May 25 '17 at 08:22

Md.Tarikul Islam

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score 0 · Answer 7 · answered Jun 18 '15 at 18:03

0

Either define fastScrollEnabled in your xml or set it at run-time when needed.

1)  <ListView
        ...
        android:fastScrollEnabled="true" />

2) mListView.setFastScrollEnabled(true);

answered Jun 18 '15 at 18:03

Pawan Maheshwari

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How to use fast scroll in android?

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