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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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B4A - Android
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Android Questions
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Libraries developers questions
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1.3K
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8.1K
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8.1K
Java Question
First mistake when recompiling an old project
Mar 2, 2026
Sergio Castellari
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Android Question
[solved] Compile error – truncated classpath? Library path list cut off at beginning
fredo
Mar 21, 2026
Answers
4
Views
455
Mar 22, 2026
fredo
B
How To Access External Files?
Big Dave
Mar 18, 2026
Answers
6
Views
555
Mar 22, 2026
Alex_197
A
[AI] For Anywhere Software, where are we now with the adoption of artificial intelligence systems?
amorosik
Mar 21, 2026
Answers
7
Views
577
Mar 22, 2026
Erel
Great article on ML as applied to programming
JackKirk
Mar 21, 2026
Answers
0
Views
205
Mar 21, 2026
JackKirk
F
The 2 RSA keys used by South African driver licences.
FrankieD
Mar 16, 2026
Answers
2
Views
408
Mar 21, 2026
Johan Schoeman
M
BiometricManager failing after restart App
Markos
Mar 18, 2026
Answers
5
Views
373
Mar 20, 2026
Markos
M
[SOLVED] error: cannot access PagerAdapter
AHilberink
Jun 14, 2023
Answers
3
Views
2K
Mar 19, 2026
LeonardoBargna
Detect click from notification
Stevenindonesia
Mar 13, 2026
Answers
11
Views
650
Mar 19, 2026
Stevenindonesia
D
SharedFolder is blank when I try to use FileProvider
dieterp
Mar 18, 2026
Answers
3
Views
285
Mar 19, 2026
Erel
Issue with JSON Parsing
techknight
Mar 18, 2026
Answers
4
Views
306
Mar 18, 2026
teddybear
S
(RESOLVE) HTML page B4A.CallSub
sigster
Mar 13, 2026
Answers
5
Views
649
Mar 18, 2026
Erel
B
Parsing Error - Index Was Outside The Bounds Of The Array [RESOLVED]
Big Dave
Mar 17, 2026
Answers
2
Views
362
Mar 17, 2026
emexes
E
D
Solved
How get answer from ESP8266 AsincWebsocket server?
dimajak
Mar 6, 2026
Answers
2
Views
322
Mar 17, 2026
dimajak
D
Verifying in-app purchases outside the device that performed the transaction?
Alessandro71
Mar 16, 2026
Answers
2
Views
243
Mar 17, 2026
Alessandro71
M
Solved
Determine keyboard status while in FullScreen in 2024
Mike1970
May 29, 2024
Answers
2
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1K
Mar 17, 2026
b4x-de
D
Solved
Jump/scroll to position in CustomListView
DIYRicey
Mar 16, 2026
Answers
2
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279
Mar 16, 2026
DIYRicey
D
Cannot compile app
Richard Phipps
Mar 15, 2026
Answers
2
Views
278
Mar 15, 2026
Maxcfgos
R
NFC tag listener (near/far) in continuos for Android
RenewMe
Mar 13, 2026
Answers
2
Views
319
Mar 15, 2026
RenewMe
R
AdMob library update
Pendrush
Apr 8, 2025
Answers
6
Views
2K
Mar 14, 2026
Ferdari
Google Play Account Terminated After App Transfer Between Personal and Organization Accounts
avivd
Feb 16, 2026
Answers
12
Views
1K
Mar 14, 2026
avivd
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