B4A Library [Lib] UltimateListView

I've been working on this project for a long time and I'm very proud to release the version 4 today.

The UltimateListView is, as its pompous name says, THE ListView.

• It can handle very long lists. This is a screenshot of a list with 245813 items, all different:
  
  
  
  
  
  
• It can mix different layouts (and they can be changed dynamically). You can use it as an expandable ListView:
  
  
  
  
  
  
• It has a low memory footprint and is very fast (this report comes from the Performance demo where the list has to display 128901 distinct words read from a database and the used device is a Huawei Honor single core 1.4 Ghz):
  
  
  
  
  
  
• It can scroll in both directions thanks to its swipe detector:
  
  
  
  
  
  
• The swipe detector can also be used to implement a swipe-to-dismiss or a swipe-to-reveal:
  
  
  
• You can easily add editors to your table to change its content:
  
  
  
  
  
  
• You can animate the items when they are added, removed, replaced or when the list is scrolled (with your own custom animation):
  
  
  
  
  
  
• It can stack items from the bottom:
  
  
  
  
  
  
• It supports drag & drop operations (internal & external):
  
  
  
  
  
  
• You can synchronize lists with different item heights:
  
  
  

The examples will show you how to implement a Pull-to-Refresh, create sticky headers or combine several lists to make a wheel. One of the examples is an improved version of my File Explorer class.

All texts and images can be loaded asynchronously (from Internet, from a database or from a local folder), so you can scroll even if the data are not fully loaded.

The list has its own state manager.

Since September 2018, ULV is available for free. You can still donate for it if you wish.
To send the money, just click on the Donate button below (the amount to enter is in euros):


Note that UltimateListView is not a wrapper around the work of someone else. It is 100% my own code and it is based upon the standard Java ListView of Android.

The UltimateListView does not work with Android versions < 2. It cannot work with B4J or B4i.

Current version: 4.50

DOWNLOAD HERE:

 

[Informatix]

A bug with ULV and Android 7 has been reported and is under investigation. The click event is not raised in some cases. I think that I found the origin of these issues with the new Android version: one comes from StateListDrawables, the other from the anonymous inner classes used for listeners. The latter is obviously an OS bug but I can rewrite my code to solve the issue. The problem with StateListDrawables is more complicated.

 

[fredo]

The click event is not raised in some cases

Oh that's good!
I had the hanging click too on views on a LayoutPanel with a sdk 24 Device with targetSdkVersion=24.
I thought the effect was caused by my code, but now I'm very glad that you're on it.

 

[Informatix]

Oh that's good!

Not so good because I have to find a workaround for an OS bug and I'm stuck for now. I improved things with a first workaround but it's not enough.

 

[aaronk]

My app is using the ULV and the Manifest has min SDK version set to 7 and Target SDK version set to 7. (So it should work on Android 2.1 and above)

My Paths configuration for my android.jar file is set to use Android-23.

I am using ULV version 4.11

My Nexus 5x is running Android 7.1.1 Build NPF10C.

When I run my app the click works every time. Touch wood, no one else who is using my app has reported any issues with selecting items in the list.

 

[Informatix]

My app is using the ULV and the Manifest has min SDK version set to 7 and Target SDK version set to 7. (So it should work on Android 2.1 and above)

My Paths configuration for my android.jar file is set to use Android-23.

I am using ULV version 4.11

My Nexus 5x is running Android 7.1.1 Build NPF10C.

When I run my app the click even works every time. Touch wood, no one else who is using my app has reported any issues with selecting items in the list.

If all items use the same layout, or if your users do not click everywhere, scroll, then re-click, they may not notice the bug.
I have a working solution for now but I'm not satisfied as it removes an important feature of ULV, so I continue to investigate.
Thank you Google!

 

[johndb]

If all items use the same layout, or if your users do not click everywhere, scroll, then re-click, they may not notice the bug.
I have a working solution for now but I'm not satisfied as it removes an important feature of ULV, so I continue to investigate.
Thank you Google!

I too am using ULV in Pixel 7.1.1 OS environment and have not had any problems either so I'm watching this thread with great interest

 

[fredo]

scroll, then re-click, they may not notice the bug

You can see it here http://i.imgur.com/UaFDyOB.gif

 

[Informatix]

The version 4.21 is ready for download. Thanks to Pendrush for his numerous tests on a real device under Android 7.

Changelog:
- To be compatible with Android 7, I had to rewrite the listeners of ULV and disable the recycling of items;
- The Cleaner event is no longer raised under Android 7.

 

[fredo]

Fix for 7.1.1 device confirmed.

Thanks for your quick resolution off your normal week schedule.

 

[tpakis]

@Informatix thank you for the quick fix! A question about recycling of items, would this lead to memory problems with large lists with bitmaps?

 

[Informatix]

@Informatix thank you for the quick fix! A question about recycling of items, would this lead to memory problems with large lists with bitmaps?

No, because I implemented an alternative solution. It's just slower.

 

[tpakis]

Excellent! Thank you!

 

[clarionero]

Thank you for your great support

 

[aaronk]

If I upgrade to this new version will it break anything and need to change any code ?

 

[itgirl]

This ULV just keep getting better and better ULV is a MUST with B4A, Thank you Informatix
Synchro example is wonderful

 

[Informatix]

If I upgrade to this new version will it break anything and need to change any code ?

No. The changes are only for Android 7.

 

[ttsolution]

Hi Informatix,
I just donated EUR 25. Waiting for Ultimate listview

Thanks

Jonh

 

[desof]

From where I can see the EXAMPLES or Screenshots from the place of it is Capable to make this bookstore. And is likely to buy it if it is very good as they say.
The support is in Spanish?

 

[MarcoRome]

De Donde puedo ver los EJEMPLOS o Capturas de Pantalla desde el lugar de es Capaz hacer esta librería. y es probable que la compre si es que es muy buena como dicen.
el soporte es en español ?

Pls, can you wirte in english your question ?

 

[clarionero]

De Donde puedo ver los EJEMPLOS o Capturas de Pantalla desde el lugar de es Capaz hacer esta librería. y es probable que la compre si es que es muy buena como dicen.
el soporte es en español ?

Hi. Look at the demo here https://drive.google.com/file/d/0B-kneWWcCy7PdGd4QU5JQ29GVm8/view?usp=sharing

Mira la demo del enlace (esta tambien en el post inicial). Es una muy buena libreria.

Rubén