B4A Library [Lib, Chargeable] UltimateListView

Discussion in 'Additional libraries, classes and official updates' started by Informatix, Oct 26, 2012.

  1. Informatix

    Informatix Expert Licensed User

    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:

      verylonglist.jpg

    • It can mix different layouts (and they can be changed dynamically). You can use it as an expandable ListView:

      layouts.jpg

    • 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):

      performance.png

    • It can scroll in both directions thanks to its swipe detector:

      tables.jpg

    • The swipe detector can also be used to implement a swipe-to-dismiss or a swipe-to-reveal:

      swipedetector.png
    • You can easily add editors to your table to change its content:

      celledit.jpg

    • You can animate the items when they are added, removed, replaced or when the list is scrolled (with your own custom animation):

      animationclap.png

    • It can stack items from the bottom:

      stackfrombottom.png

    • It supports drag & drop operations (internal & external):

      dragndrop.png

    • You can synchronize lists with different item heights:

      grid.jpg
    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.

    Due to the important work made, I request a minimum donation amount of 25 euros.

    To send the money, just click on the Donate button below (the amount to enter is in euros):
    [​IMG]

    What you'll get:
    - the main library and all the libraries required by the examples;
    - a complete User's Guide;
    - a detailed list of all functions, events and properties;
    - a tutorial;
    - more than 20 examples with a few useful and reusable classes.

    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.

    You can download here the list of all functions and properties, and the table of contents of the user's guide.

    With my catalog, you can try all examples of this library.

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

    Current version: 4.50

    Bonus : the DataCollection library is available for free with UltimateListView.


    WHEN DONATING, PLEASE INDICATE CLEARLY IN THE PAYPAL FORM THAT YOU DONATE FOR ULV TO AVOID ANY CONFUSION WITH MY OTHER LIBRARIES.
     

    Attached Files:

    Last edited: May 7, 2018
  2. Djembefola

    Djembefola Active Member Licensed User

    Wow! Amazing!
    :sign0188:
    This will be very useful for database application developers.
     
  3. vb1992

    vb1992 Well-Known Member Licensed User

    Maybe posting a demo APK would be good
     
  4. Informatix

    Informatix Expert Licensed User

    Not for the moment. After a few sales, I will consider it.
    It's so easy to decompile things in the Android world...
     
  5. peacemaker

    peacemaker Well-Known Member Licensed User

    Can libs be reverse engineered from decompiled Java ? :sign0104:
     
  6. Informatix

    Informatix Expert Licensed User

    With the right tools, you can get something very similar to the source code that produced a library or a B4A application.
     
  7. agraham

    agraham Expert Licensed User

    Yes - JD-GUI is fairly good but by no means perfect.
     
  8. RadCoder

    RadCoder Member Licensed User

    just reviewing the documentation, awesome work!
     
  9. Mahares

    Mahares Well Known Member Licensed User

    @Frederic:
    1. I think making the documentation available that explains in detail what each class or library is capable of doing to prospective buyers will help your sales. People are not going to buy something when they do not have a full grasp of what it does.
    2. When you produce upgrades, are they available to buyers and for how long.
    3. Always remember: People that use your product are essentially helping you improve it by debugging and recommending enhancements, as was the case when your classes and libs are free. So, be easy on the prices. Any high library or class prices will have a negative impact on Erel's B4A sales when buyers start factoring the overall cost.
    Merci d'avance
     
  10. Informatix

    Informatix Expert Licensed User

    Good idea. I added a PDF listing the contents in detail and an excerpt of the documentation listing the methods & properties of the main classes and libraries.

    Upgrades are unlimited and free for buyers. I'm very reactive to fix bugs (if any).

    I won't change my price because this price looks to me like a fair reward for my work. How many views like this exist in the world ? To my knowledge: none. Even in the Java world, it doesn't exist something like this (or it is well hidden, or not publicly available). It's an unique work. I spent full weeks on this. The result is not an easy thing that everyone can do, especially when it comes to imbricate many algorithms. I can make an offer to any buyer: if you can improve the ULV significantly, I refund you (and I'll do it with pleasure because it will mean that the product has been improved).

    In comparison, I consider that most of my free classes are something that an advanced user or a professional developer can easily replicate.

    These last weeks, I made two interesting experiences:
    - adding a donate button (very poor results; a lot of people download my stuff and forget to donate despite the minimal donation asked for);
    - selling my work directly to customers (very good results; that does not encourage to create free stuff; I could really earn a living this way but this is not what I'm looking for).
    I don't believe that a very low price will help the sales. This price, to my opinion, is already a very low price, almost a gift. I would have charged this product to a single customer probably two or three thousand euros.

    And don't worry, I will continue to release free classes or libraries (as donationwares probably).
     
    Smee, koaunglay, ArminKH and 6 others like this.
  11. bluedude

    bluedude Well-Known Member Licensed User

    I think it is a very fair price for such functionality. To create a great list is a pain.
     
  12. keirS

    keirS Well-Known Member Licensed User

    Just looking at the documentation and one thing I can't work out is if you can have variable row heights in tables (looking at the Table for ULV Class documentation). If you can I think you may have another customer.
     
  13. Informatix

    Informatix Expert Licensed User

    The ULV is a bit different from the other lists (ListView, CustomListView, CheckList, Table...) and what you can find here may not be found there because of the different way of doing things (you do not load data into the list at the beginning, for example), but don't worry about the features: the ULV can do all that these lists can do, and a lot more.

    You can see in the screenshots with flowers that you can mix items (or rows) with many different heights. And you can change the height at any time, or the whole layout of the item if you want. Items can even have an appearance that automatically adapts to their content.
     
  14. imbault

    imbault Well-Known Member Licensed User

    This library is just awesome !!!!

    I bought it this week end.
    I've just released an app for our IT organization, it took me just a couple of hours.

    I recommend all developpers to buy it. It's a must have library

    And the reactivity of the developper around issues is fantastic.

    Patrick
     
  15. bluedude

    bluedude Well-Known Member Licensed User

    Wondering why you don't provide apk's of your samples? That way I could testdrive a few features and see how good it is!
     
  16. Informatix

    Informatix Expert Licensed User

    See post #4
     
  17. bluedude

    bluedude Well-Known Member Licensed User

    Just donated

    Hi,

    I just donated EUR 25, how can I get the Ultimate listview?
     
  18. Informatix

    Informatix Expert Licensed User

    Thank you. I sent an email.
     
  19. bluedude

    bluedude Well-Known Member Licensed User

    Overwhelming

    I just checked out some samples and it is pretty overwhelming indeed.

    I basically want to use this to replace all my old scrollview code.

    Cheers,
     
  20. Informatix

    Informatix Expert Licensed User

    Support is done by email. So send me an email if you're stuck.
     
    Richard Peck likes this.
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