Android horizontal listview

Android horizontal listviewposted by Paul on march7, 2011

Due popularity, I have decided to create a GitHub Repo for this project. Please Checkout the code:
Http://github.com/dinocore1/Android-Horizontal-ListView pull requests are welcome!

Licensed under mit license copyright (c) 2011 Paul Soucy, (Paul + blog@dev-smart.com)

The android API seems to be lacking a horizontal listview widget. Basically, what I needed was something exactly like the gallery widget but without the center-locking feature. After much Googling (and finding dead ends

Like this or
This), I eventually came to the conclusion that a horizontal listview simply did not exist. So I built my own...

My android horizontal listview implementation has the following features:

• Subclass adapterview so I can make use of adapters
• Fast-make use of recycled views when possible
• Items are clickable-(accepts adapterview. onitemclicklistener)
• Scrollable
• No center-locking
• Simple-Is that so much to ask?

If you find this helpful, let me know, I wowould love to hear your feedback.

How to use:
Horizontal listview is ment to be a drop-in replacement for a standard listview. Here is some quick demo code to get you started:

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1. Package com. devsmart. Android. test;
3. Import Android. App. activity;
4. Import Android. OS. Bundle;
5. Import Android. View. layoutinflater;
6. Import Android. View. view;
7. Import Android. View. viewgroup;
8. Import Android. widget. baseadapter;
9. Import Android. widget. textview;
11. Import com. devsmart. Android. UI. horizontiallistview;
13. Public class horizontallistviewdemo extends activity {
15. @ Override
16. Protected void oncreate (bundle savedinstancestate ){
17. Super. oncreate (savedinstancestate );
19. Setcontentview (R. layout. listviewdemo );
21. Horizontiallistview listview = (horizontiallistview) findviewbyid (R. Id. listview );
22. Listview. setadapter (madapter );
24. }
26. Private Static string [] dataobjects = new string [] {"text #1 ",
27. "Text #2 ",
28. "Text #3 "};
30. Private baseadapter madapter = new baseadapter (){
32. @ Override
33. Public int getcount (){
34. Return dataobjects. length;
35. }
37. @ Override
38. Public object getitem (INT position ){
39. Return NULL;
40. }
42. @ Override
43. Public long getitemid (INT position ){
44. Return 0;
45. }
47. @ Override
48. Public View getview (INT position, view convertview, viewgroup parent ){
49. View retval = layoutinflater. From (parent. getcontext (). Inflate (R. layout. viewitem, null );
50. Textview Title = (textview) retval. findviewbyid (R. Id. Title );
51. Title. settext (dataobjects [position]);
53. Return retval;
54. }
56. };
58. }

Res/layout/listviewdemo. xml:

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1. <! --? XML version = "1.0" encoding = "UTF-8 "? -->
2. <Linearlayout xmlns: Android = "http://schemas.android.com/apk/res/android" Android: Orientation = "vertical" Android: layout_width = "fill_parent" Android: layout_height = "fill_parent" Android: Background = "# fff">
4. <COM. devsmart. android. UI. horizontiallistview Android: Id = "@ + ID/listview" Android: layout_width = "fill_parent" Android: layout_height = "wrap_content" Android: Background = "# DDD">
6. </COM. devsmart. Android. UI. horizontiallistview> </linearlayout>

Res/layout/listitem. xml:

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1. <! --? XML version = "1.0" encoding = "UTF-8 "? -->
2. <Linearlayout xmlns: Android = "http://schemas.android.com/apk/res/android" Android: Orientation = "vertical" Android: layout_width = "wrap_content" Android: layout_height = "wrap_content" Android: Background = "# fff">
4. <Imageview Android: Id = "@ + ID/image" Android: layout_width = "150dip" Android: layout_height = "150dip" Android: scaletype = "centercrop" Android: src = "@ drawable/icon">
6. <Textview Android: Id = "@ + ID/Title" Android: layout_width = "fill_parent" Android: layout_height = "wrap_content" Android: textcolor = "#000" Android: gravity = "center_horizontal">
8. </Textview> </imageview> </linearlayout>

Download code here
Horizontal listview (1931)

Changelist
1.5:
Adapter. notifydatasetchanged () Now saves position in list instead of starting at ining

1.4:
Added code to respond to Adapter. notifydatasetchanged ()

1.3:
Added mscroller. forcefinished (true); To the ondown function of mongesture so the user con stop the scroll on tap.