B4J Tutorials

[ABMaterial] Custom component ABMTableGrid (team project)

One of the most asked for components in ABMaterial is an editable Grid. We already have ABMTable and ABMTableMutable, but they have their limitations when it comes to being editable. So, as this...
 

Attachments

  • ABMTableGridDemo.zip
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  • CSSJS.zip
    31 KB · Views: 820
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[XLUtils] Creating Tables

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Tabular data can be converted to a Table object. Excel provides all kinds of nice features related to tables...
 

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  • Table.zip
    1.6 KB · Views: 646

Null in relation to assigning database values to variables

I don't know if this counts as a tutorial but it might help someone. Please advise of any errors or omissions and I'll fix them.

Sometimes the value in a field in a resultset will be null.
This...
 
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[BANanoVuetifyAD3] Creating Server Applications with BANanoServer...

Ola..

Update: 12 July 2021: Here is a working example with jRDC2 MySQL...
 

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  • 1612087158363.png
    1612087158363.png
    12.7 KB · Views: 460
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[XLUtils] Writing Excel Workbooks

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  • Products.zip
    2 KB · Views: 898
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✅ [B4X] [XUI] [B4XPages] B4J PreoptimizedCLV lazy loading from SQLite and CSV - Newer developers

Hello to you all,
Welcome to Sheldon Coopers and Amy Farrah Fowlers fun with flags ;)

Here is a simple example on using B4XPages with both an SQLite database and also a CSV file with multiple...
 
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[XLUtils] Conditional formatting

XLUtils v1.05 adds support for conditional formatting.

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A conditional formatting element is made of the applied range and one or more rules. A rule is made of a formula and...
 

Attachments

  • ConditionalFormatting.zip
    1.8 KB · Views: 432
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[XLUtils] Reading and writing example

You are probably familiar with the online libraries index.
The table has a column for each of the platforms. This structure is useful as there are many cross platform libraries.

The task...
 

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  • LibrariesSplitter.zip
    88.4 KB · Views: 555
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[XLUtils] Templates and Charts

Creating new workbooks based on existing workbooks saves a lot of work and also allows adding features that are not directly available in POI / XLUtils, such as charts.
Templates are regular...
 

Attachments

  • Project.zip
    19.6 KB · Views: 582

[BANano] Searching B4xGoodies & Creating Overviews with Walt's B4xGoodies Explorer using BVAD3

Ola

Download

Recently a WebApp built using BANano+Vuetify was created to enable one to explore Walts B4XGoodies.

The Creation -...
 

[B4x]Padding/depadding PKCS7/5 and other

EDIT: If the message length is equal to the pad length, you have to pad to the next multiple. E.g. 16 bytes would be padded to 32 because one would not know how long the message was because the...
 
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[B4x][PHP/HTML/JS]PHP/HTML/JS OTP: Create OTP credentials & show a QR-Code which can be scanned/used with Authenticator apps

Here's an PHP/HTML example:

- create OTP credentials (including Base32 encoding)
- show a html page with these credentials and a generated QR-Code
- this code can be scanned and used with all...
 

Attachments

  • AuthenticatorPHP.zip
    95.7 KB · Views: 394

Developing WebApps/WebSites with BVAD3 Free Online Class on April 28, 2021 @ 09:00 - 15:00 South African Time

Good day

The LM (Learner Material) is freely available for learning BVAD3 even if one cannot make it for the online meeting. Join and get access to it now, ...
 
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Erels B4J Oveview from Walt's B4xGoodies - created with B4xgoodies Explorer using BVAD3

[BANano] Walts B4xGoodies Explorer Using BVAD3 on Mobile Device

Ola

Fortunately one can access the b4xgoodies via a WebApp on their mobile devices. In this video below, we detail how one needs to:

Steps to reproduce on your Mobile Device

1. Visit...
 

[BANano] Live Code Swapping in v5 preview

Hi all,

The upcoming new version of BANano (v5) will allow you to use one of the greatest features of B4X: Live Code Swapping!

This has always been a very productive and unique tool we have at...
 

[BANano] How BANano.GeoLocation helped us with developing Seeking.Shelter & GPS locations querying from a database

Ola

Seeking.Shelter is an app for people in distress. It helps one find the police stations, courts, shelters, clinics and hospitals around South Africa.

One of the WebApp reviewers made a...
 
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Multiple entry jar

You can put more than one java application in a single jar, but still be able to run them as individual applications.
The main advantage is the space it takes up.
For example, a simple non-ui...
 

[BANano] MD5 Encryption - Getting the Md5 Hash of a string

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[BANano][Database.Show] - Viewing a Music Store SQLite Database

Ola

As you might be aware, one has been busy working on Database.Show, a BANano+Vuetify Database Viewer, Documentor, CRUD thingy.

We have just closed off one of the milestones, MySQL and...
 
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