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How can I make a horizontal ListView in Android?

Asked 2010-10-06T21:28:23.953
184

Possible Duplicate:
Horizontal ListView in Android?

Like many things in Android, you wouldn't think this would be such a hard problem but ohhh, by golly, would you be wrong. And, like many things in Android, the API doesn't even provide a reasonably extensible starting point. I'll be damned if I'm going to roll my own ListView, when all I want is to take the thing and turn it on its side. \rant

Okay, now that I'm done fuming, let's talk about the problem itself. What I need is basically something exactly like the Gallery, but without the center-locking feature. I don't really need ListView's listSelector but it's a nice-to-have. Mostly, I could do what I want with a LinearLayout inside a ScrollView, but I need the child views to come from a ListAdapter and I would really like to have a view recycler. And I really don't want to write any layout code.

I peeked into the source code for some of these classes...

Gallery: It looks like I could use the Gallery if I override most of the 'onXyz' methods, copy all their source code, but refrain from calling scrollIntoSlots(). But I'm sure that if I do that I'll run into some member field that's inaccessible or some other unforeseen consequence.

AbsSpinner: Since the mRecycler field is package-private I doubt I'll be able to extend this class.

AbsListView: It looks like this class is only meant for vertical scrolling, so no help there.

AdapterView: I've never had to extend this class directly. If you tell me it's easy to do, and that it's easy to roll my own RecycleBin, I'll be very skeptical but I'll give it a shot.

I suppose I could possibly copy both <

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3 Answers

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After reading this post, I have implemented my own horizontal ListView. You can find it here: http://dev-smart.com/horizontal-listview/ Let me know if this helps.

answered 2011-03-08T01:28:04.243
4

You know, it might be possible to use an existing ListView with some judicious overriding of dispatchDraw() (to rotate the Canvas by 90 degrees), onTouch() (to swap the X and Y of the MotionEvent coords) and maybe onMeasure() or whatever to fool it into thinking it's y by x rather than x by y...

I have no idea if this would actually work but it'd be fun to find out. :)

answered 2010-11-12T09:43:49.093
0

Have you looked into the ViewFlipper component? Maybe it can help you.

http://developer.android.com/reference/android/widget/ViewFlipper.html

With this component, you can attach two or more view childs. If you add some translate animation and capture Gesture detection, you can have a nicely horizontal scroll.

answered 2010-11-12T09:32:43.760

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