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Welcome to B4X forum!
B4X is a set of simple and powerful cross platform RAD tools:
B4A
(free) - Android development
B4J
(free) - Desktop and Server development
B4i
- iOS development
B4R
(free) - Arduino, ESP8266 and ESP32 development
All developers, with any skill level, are welcome to
join the B4X community
.
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B4X Programming Forum
New Posts
B4A - Android
Android Questions
Please post any technical question in this forum.
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74.3K
Messages
428.3K
Sub-forums
Sub-forums
Libraries developers questions
Messages
428.3K
M
Android Question
question disappeared ?
Today at 4:43 PM
michaelleewebb
Tutorials & Examples
Android development starts here.
Please do not post questions in this sub-forum.
Threads
1.4K
Messages
28.9K
Messages
28.9K
Android Tutorial
Google Authorization – Fix for ClearTokenRequest Class Not Found Error
Wednesday at 6:02 PM
Mehrzad238
Additional libraries, classes and official updates
Users contributed libraries, classes and official updates.
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2.3K
Messages
68.2K
Sub-forums
Sub-forums
Old Libraries Archive
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68.2K
M
B4A Library
AXrLottie2 Recompiled for 16KB Page
Today at 11:35 AM
mzelecom
Code Snippets
A place to share useful code snippets.
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882
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4.7K
Messages
4.7K
Android Code Snippet
Handling External App Return Flow — Small Utility Snippet
Today at 4:02 PM
oliverhaven13
Bugs & wishlist
The place to discuss bugs and missing features.
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27K
Messages
27K
Bug?
B4i Issue: <view>.Visible = True Fails After <view>.SetVisibleAnimated(<duration>, False)
Yesterday at 2:29 PM
b4x-de
Share Your Creations
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2.1K
Messages
14.5K
Messages
14.5K
Share My Creation
Speed Test
Wednesday at 11:49 AM
Magma
B4i - iOS
iOS Questions
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10.2K
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53.8K
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53.8K
iOS Question
Apple certificates and profiles expired
Today at 9:45 AM
tsteward
iOS Tutorials
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173
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2.5K
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2.5K
iOS Tutorial
Background Fetch (Downloads)
Sunday at 3:07 PM
Erel
iOS Libraries
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214
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2.8K
Messages
2.8K
B4i Library
Subscribe to B4i libraries updates
Wednesday at 8:40 PM
Star-Dust
iOS Code Snippets
Threads
138
Messages
495
Messages
495
A
iOS Code Snippet
iOS 26.1 Liquid Glass
Nov 21, 2025
Alex_197
iOS Bugs & Wishlist
Threads
746
Messages
2.9K
Messages
2.9K
Bug?
[RESOLVED] Version 10
Tuesday at 3:05 PM
Jmu5667
iOS Share Your Creations
The first attached image will be displayed as the thread preview image.
Threads
156
Messages
869
Messages
869
J
Share My Creation
b4i : View PDF pages in an imageView
Monday at 10:06 PM
jkhazraji
B4J - Desktop, Server and Raspberry Pi
B4J Questions
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Messages
89.6K
Messages
89.6K
B4J Question
How can I stream audio from PC1 to PC2, which are geographically distant?
Yesterday at 5:03 PM
aminoacid
B4J Tutorials
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937
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8K
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8K
B4J Tutorial
Gemini AI example using REST API (UI)
Yesterday at 5:57 PM
aeric
B4J Libraries & Classes
Threads
792
Messages
12.3K
Messages
12.3K
Other
Subscribe to B4J library updates
Yesterday at 4:21 PM
amorosik
B4J Code Snippets
Threads
573
Messages
2.2K
Messages
2.2K
B4J Code Snippet
[B4x] AES-256 encryption with salt and iv (works with all platforms like php, .net, etc.)
Today at 7:47 PM
fungms
B4J Bugs & Wishlist
Threads
1.3K
Messages
5.5K
Messages
5.5K
Wish
Clean Project wish
Today at 4:40 AM
virpalacios
B4J Share Your Creations
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Threads
715
Messages
5.4K
Messages
5.4K
Share My Creation
Gemini AI Server using REST API with Streaming
2 minutes ago
aeric
B4R - Arduino, ESP8266 and ESP32
B4R Questions
Threads
2.3K
Messages
13.2K
Sub-forums
Sub-forums
Libraries developers questions
Messages
13.2K
B
B4R Question
ESP32 Bluetooth
Tuesday at 5:37 PM
Brian Dean
B4R Tutorials
Threads
207
Messages
1.3K
Messages
1.3K
E
B4R Tutorial
ATMEGA2560 ALL FOUR UART WORKING Example
Nov 20, 2025
embedded
B4R Libraries
Additional libraries
Threads
163
Messages
916
Messages
916
B4R Library
library for PCF8574
Nov 8, 2025
sagmill
B4R Code Snippets
Threads
132
Messages
380
Messages
380
B4R Code Snippet
[ESP MCU] Access point web-interface example: WiFi SSID, password and API URL
Oct 5, 2025
peacemaker
B4R Bugs & Wishlist
Threads
259
Messages
1.1K
Messages
1.1K
Wish
#include "file.bas"
Aug 9, 2025
peacemaker
B4R Share Your Creations
Threads
145
Messages
472
Messages
472
Share My Creation
simulator using the DFPlayer Mini Mp3 Player
Nov 15, 2025
Cesar_Morisco
General
The Business Forum
The place for business (ads, sales, money, ...) related questions and tips.
Threads
445
Messages
3.3K
Messages
3.3K
Looking for a B4A dev who can update a project to current SDK
Nov 14, 2025
Sandman
🐢👩🏫 Teaching Programming with B4X
B4X is a great option for teaching programming.
This forum is intended for parents and teachers who teach or like to teach programming using B4X.
Threads
126
Messages
1.3K
Messages
1.3K
Controlling a WS2812B LED strip connected to an ARDUINO UNO board via the Bluetooth system of an Android smartphone
Oct 15, 2025
Marc DANIEL
Share Your B4X Story
What are you using B4X for? What have you learnt along the way?
Threads
52
Messages
428
Messages
428
How Lognote Helps People in Everyday Life and Work
Sep 20, 2025
epiCode
Game Development
Game development related questions and discussions
Threads
367
Messages
3.3K
Messages
3.3K
Games
The first playable 3D game developed with WebGL library
Nov 22, 2025
LucaMs
Chit Chat
The place for open discussions.
Threads
5.2K
Messages
44.5K
Messages
44.5K
Lark vs Google Workspace
Today at 10:00 AM
aeric
Forum Discussion
Please post any question or idea regarding the forum here.
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952
Messages
5.8K
Messages
5.8K
b4x.example - NO!
Nov 13, 2025
Erel
Job Offers
Do you have a job offer / project for developers? Post it here.
Threads
863
Messages
3.7K
Messages
3.7K
[ABMaterial] - bare-bone calendar/scheduler
Nov 12, 2025
udg
More Languages
Italian Forum
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5K
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59.4K
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59.4K
Italian
Preoccupanti nuove politiche Google
Nov 22, 2025
Sagenut
German Forum
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2.9K
Messages
15.9K
Sub-forums
Sub-forums
German Tutorials
Messages
15.9K
F
German
Programmierer für SDK-"Aktualisierung" B4A-Projekt gesucht
Nov 14, 2025
fep
Spanish Forum
Threads
3.4K
Messages
19.5K
Messages
19.5K
Spanish
WebView.CaptureBitmap y TakeScreenshot no guardan lo que se ve en la pantalla
Yesterday at 10:56 PM
chej
French Forum
Threads
692
Messages
3.9K
Sub-forums
Sub-forums
French Tutorials
Messages
3.9K
C
French
B4aBridge probleme fonctionnement
Today at 7:13 PM
Cast
Portuguese Forum
Threads
215
Messages
976
Messages
976
Uma duvida com o Xml2Map
Oct 27, 2025
Claudio Oliveira
Chinese Forum
Threads
241
Messages
806
Sub-forums
Sub-forums
Chinese Tutorials
Messages
806
P
各位大佬,谁有B4A 的 android 28 SDK?
Sep 29, 2025
pos8000
Even More Languages
Threads
415
Messages
1.3K
Sub-forums
Sub-forums
Russian Forum
Thai Forum
Arabic Forum
Dutch Forum
Hebrew Forum
Japanese Forum
Romanian Forum
Polish Forum
Turkish Forum
Czech Forum
Bahasa Malaysia Forum
Korean Forum
Messages
1.3K
S
Не устанавливается приложение (файл apk) на Android TV v11. На android TV Xiaomi
Today at 7:56 PM
scp
Latest libraries
SD_Diagram
By: Star-Dust
version: 1.00
Platforms: B4A, B4i, B4J
SS_ModbusMaster
By: Peter Simpson
version: 1.00
Platforms: B4A
xSD_OpenMaps
By: Star-Dust
version: 1.00
Platforms: B4A, B4i
iArchiver
By: Erel
version: 10.00
Platforms: B4i
iBarcode
By: Erel
version: 10.00
Platforms: B4i
iBLE
By: Erel
version: 10.00
Platforms: B4i
Index
Latest posts
Share My Creation
Gemini AI Server using REST API with Streaming
Latest: aeric
2 minutes ago
B4J Share Your Creations
S
Не устанавливается приложение (файл apk) на Android TV v11. На android TV Xiaomi
Latest: scp
Today at 7:56 PM
Russian Forum
B4J Code Snippet
[B4x] AES-256 encryption with salt and iv (works with all platforms like php, .net, etc.)
Latest: fungms
Today at 7:47 PM
B4J Code Snippets
C
French
B4aBridge probleme fonctionnement
Latest: Cast
Today at 7:13 PM
French Forum
M
Android Question
question disappeared ?
Latest: michaelleewebb
Today at 4:43 PM
Android Questions
Share My Creation
[Web][SithasoDaisy5] Low Code - A Source Code Generator for your Beautiful BANano WebApps
Latest: Mashiane
Today at 4:21 PM
B4J Share Your Creations
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