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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
Please post any technical question in this forum.
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
A
Applying sqlcipher-android-4.10.0.aar that fixes 16KB issues with SQLCipher
Alex_197
Aug 31, 2025
2
Answers
28
Views
7K
Sep 17, 2025
Alex_197
A
G
B4A-Bridge Problem connection with Android 15
gucoonyx
Sep 16, 2025
Answers
1
Views
564
Sep 17, 2025
Erel
opting out of edge-to-edge Admob
Douglas Farias
Sep 3, 2025
Answers
11
Views
3K
Sep 17, 2025
Erel
J
b4xseekbars difficult to use on a horizontal scroll view
jimseng
Sep 16, 2025
Answers
2
Views
619
Sep 16, 2025
jimseng
J
GoogleVR Library 64-bit support – any help?
scsjc
Sep 5, 2025
Answers
10
Views
2K
Sep 16, 2025
scsjc
Multilingual B4XPages application
Sergey_New
Sep 16, 2025
Answers
11
Views
1K
Sep 16, 2025
aeric
W
Strange behaviour of StringBuilder
Wosl
Sep 9, 2025
2
Answers
36
Views
4K
Sep 16, 2025
Wosl
W
M
Let the folder choose, rigth way?
mw71
Sep 13, 2025
Answers
3
Views
687
Sep 16, 2025
Erel
Caused by: java.lang.ClassNotFoundException: Didn't find class "androidx.arch.core.executor.ArchTaskExecutor"
haokiem100
Sep 15, 2025
Answers
1
Views
576
Sep 16, 2025
Erel
Simple alarm clock
Sergey_New
Sep 14, 2025
Answers
6
Views
1K
Sep 15, 2025
Sergey_New
M
'Ctrl + click to sync files:
Mark Stuart
Sep 14, 2025
Answers
3
Views
719
Sep 14, 2025
LucaMs
A
Error Failed resolution of: Lnet/sqlcipher/database/SQLiteDatabase; when applying sqlcipher-android-4.10.0.aar to fix the SQLCipher 16KB issue
Alex_197
Sep 14, 2025
Answers
0
Views
655
Sep 14, 2025
Alex_197
A
A
A question about fileprovider.
aumi
Sep 13, 2025
Answers
5
Views
779
Sep 14, 2025
aumi
A
F
Left Right multiline
Farzam
Sep 14, 2025
Answers
4
Views
774
Sep 14, 2025
William Lancee
T
B4Xtable navigate panel
Tony Tetley
Sep 13, 2025
Answers
3
Views
778
Sep 14, 2025
walt61
W
Example App using User Login (PHP/MySQL/API) on live server
stp
Sep 12, 2025
Answers
17
Views
2K
Sep 14, 2025
stp
Unable to load .txt file into multiline EditText — Requesting example Main.bas, manifest.xml, and required libraries
varayut
Sep 14, 2025
Answers
6
Views
878
Sep 14, 2025
Erel
size limit on CreateMap? (Caused by: java.lang.VerifyError: Verifier rejected class xxx: java.lang.String)
Alessandro71
Sep 11, 2025
Answers
8
Views
1K
Sep 14, 2025
Erel
A
API Key in file on its own instead of manifest?
aegidius20
Sep 12, 2025
Answers
1
Views
440
Sep 14, 2025
Erel
[solved] Notification with download: local service/receiver or firebase?
voxel
Aug 25, 2025
Answers
6
Views
1K
Sep 13, 2025
voxel
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