Tutorials & Examples

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[Closed] Solutions to "The filename or extension is too long" error

This issue was solved with the B4A 13 Beta 6.

I saw many users (include me) with the problem "The filename or extension is too long", when try to compile the project with...
 
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Align the AES encryption and decryption results between B4X and the .NET platform

A C# friend who uses MAUI to develop Android apps, but the friend works well, so I recommend him to use B4A, and he got started after a few hours of basic tutorials. He implemented a way to make...
 

Attachments

  • AES B4X and .NET is the same.zip
    142.4 KB · Views: 232
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[B4X] AS Settings - Change Description Text on the fly

[B4X] [XUI] AS Settings

Introducing a new library that allows you to create your own settings page with minimal code. This library comes equipped with automatic saving and loading features, making it incredibly easy to manage your settings. It supports booleans, free text, numbers, comboboxes, action buttons and more...
www.b4x.com www.b4x.com

How to change the description text of a property:
B4X: 
AS_Settings1.MainPage.GetProperty("ExportDatabase").Description =...
 
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Getting file info using uri from content chooser or from received shared file - example

example of getting file property information from uri provided by content chooser or received file shared to the app. Curtesy of Erel’s example: Received Share. Shows File name, Mime Type...
 

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  • Screenshot_uriexample.jpg
    341.8 KB · Views: 2,939
  • Uri.zip
    11 KB · Views: 2,735
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mpAndroidCharts - Various Charts using JavaObject

Have never done a B4A "wrapper" before making use of JavaObject only and thought I would see if I could get the PieChart of mpAndroidCharts implemented by using B4A's JavaObject only...
 

Attachments

  • mpChartLib.jar
    360.7 KB · Views: 332
  • mpAndroidPieChartJO.zip
    9.9 KB · Views: 291
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Exoplayer track video resolutions

Hello friends, i wanna share with you a code that can you use it to get video resolutions avilables in played video (m3u8,mp4 ...) and show it in listview to select one of this qualities; :
do not...
 

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  • video_qualities.jpg
    37.9 KB · Views: 238
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Simple function to convert Markdown Text to CSBuilder Format

This simple function converts Markdown-formatted text so that it can be used as CSBuilder.

This is particularly useful if, for example, you have created a text in MS Word with bold and...
 

Attachments

  • md2cs.zip
    9.6 KB · Views: 203
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[B4X] AS Onboarding - Dark and Light mode switch

[B4X] [XUI] AS Onboarding [Payware]

AS Onboarding is a view you can use to attract first-time users when they land on your app. Or to present new features after a major update, with pictures and descriptions. Or to collect user data at the 1st start of the app, many things are possible. The View is modular and can also be...
www.b4x.com

In this example I show how you can easily change the theme e.g. from a dark theme to a light one and how to...
 

Attachments

  • Light and Dark Example.zip
    246.5 KB · Views: 278
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Background location tracking



Simple example of a foreground service that keeps the process running in the background. The current location is shown in...
 

Attachments

  • MyLocation.zip
    10.6 KB · Views: 978
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select image from device and upload in server

well hi too all .
As the title suggests, I want to teach you how to upload photos
I had searched a lot about it myself and had not found any results. By changing other people's codes, I was able...
 
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CustomCardView Base On CustomListview Module

This is a module base on CustomListview, all function same with CustomListview I call it CustomCardView. Hope this help.

B4X: 
For I = 0 To 5
'(the 47%x is cardview width, and the 45%y is the...
 

Attachments

  • CustomCardViewExample.zip
    14.2 KB · Views: 780
  • CustomCardView.bas
    8.6 KB · Views: 748
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[B4X] Supabase - Call a Postgres function (RPC)

[B4X] Supabase - The Open Source Firebase alternative

Supabase is an open source Firebase alternative. It provides all the backend services you need to build a product. Supabase uses Postgres database with real-time capabilities. Basically, supabase provides an interface to manage postgres database that you can use to create table and insert, edit...
www.b4x.com

Perform a function call.
You can call Postgres functions as Remote Procedure Calls...
 
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Google Play Billing v.7 Subscription Example

This is a modified example, based in the original example from @Erel.
The previous example only make purchases.
This new example utilizes the Google Play Billing library v.7, changes...
 

Attachments

  • BillingExample7.zip
    11.1 KB · Views: 413
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Share Text File Between 2 Apps

This is just another example based on the ManageExternalStorage class provided by @agraham.
It is a response to this question.

B4ARepositoryWriter - writes a text file to an...
 

Attachments

  • B4ARepositoryWriter.zip
    11.3 KB · Views: 286
  • B4ARepositoryReader.zip
    11.4 KB · Views: 275
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Http Server hosting a page with download link

Just a simple example with a link to a file stored in File.DirInternal.

Required Archiver library.



This is a response to this thread.
 

Attachments

  • HttpServer.zip
    12.4 KB · Views: 293
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Share SQLite database between 2 devices

This is just a proof of concept to show that Device A behave like a server hosting a database and Device B connects to it accessing the "shared" database. It is a response to this question...
 

Attachments

  • ShareDB.zip
    17.6 KB · Views: 393
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Example Spinner to Bold, Italic or other typeface

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Widget Layout Background

I'm just trying to add a background image to the 4x1 widget from the following excellent thread...
 

Attachments

  • Widget Test.zip
    193.5 KB · Views: 258
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Widget Layout (Resizable, Adaptive)

Not sure if this can be considered a Tutorial, my first attempt.
Lately I started to play with Widgets, mostly for curiosity.
The main problem I encountered was how to design the Layout to make it...
 

Attachments

  • Widget Test.zip
    214.6 KB · Views: 350
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FREE Source Code's !

Hi all,

i have updated my webpage and decided to add a tutorial section.

My first tutorial is a simple calculator (+,-,*,/) there is a video tutorial incl. Source code on my site.

I will upload...
 

Attachments

  • t1calc.zip
    3.7 KB · Views: 3,455
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