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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
B4A.EXE Trojan:Win32/Bearfoos.A!ml ?
iz0ndg
Aug 17, 2025
Answers
4
Views
1K
Aug 17, 2025
iz0ndg
Exoplayer example that switches orientation
stp
Aug 17, 2025
Answers
7
Views
891
Aug 17, 2025
teddybear
How do I set my app's photos/files to be backed up by Google Photos/Backup
gregchao
Aug 14, 2025
Answers
1
Views
627
Aug 17, 2025
Erel
G
Dark Theme in Manifest
grafsoft
Aug 16, 2025
Answers
3
Views
928
Aug 17, 2025
Mehrzad238
Tiles_JE - Custom picture path
stp
Aug 14, 2025
Answers
10
Views
1K
Aug 15, 2025
TILogistic
IME_HeightChanged not firing with targetSdkVersion = 35
giggetto71
Jul 6, 2025
Answers
10
Views
2K
Aug 15, 2025
giggetto71
Notifications permission
Sergey_New
Aug 14, 2025
Answers
8
Views
717
Aug 15, 2025
asales
how to test inapp purchase/subscription? [SOLVED]
ilan
Aug 15, 2025
Answers
1
Views
698
Aug 15, 2025
ilan
M
Group a List of names by Month Date into some kind of UI list
Mark Stuart
Aug 13, 2025
Answers
13
Views
1K
Aug 15, 2025
TILogistic
C
Save notification to database and retrieve it
Chicao99
Aug 14, 2025
Answers
1
Views
601
Aug 14, 2025
cklester
HttpJob Not Working on Android 11 (API 30) with B4A Latest Version and android.jar SDK 36
Flavio SOuza
Aug 13, 2025
Answers
3
Views
996
Aug 14, 2025
Flavio SOuza
A
SEND_SMS location in background / SDK35 / FLAG_MUTABLE ?
Armani
Aug 12, 2025
Answers
4
Views
923
Aug 14, 2025
Armani
A
SimpleExoPlayer URI Error - is there a regex way of replacing bad characters
Robert Valentino
Aug 13, 2025
Answers
3
Views
753
Aug 14, 2025
Robert Valentino
How do I copy a image file from Gallery using code?
gregchao
Aug 13, 2025
Answers
1
Views
565
Aug 14, 2025
Erel
Failed resolution of: Landroidx/work/impl/WorkDatabase
Filippo
Aug 10, 2025
Answers
6
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1K
Aug 14, 2025
Erel
Special Thanks
Shelby
Aug 13, 2025
Answers
0
Views
405
Aug 13, 2025
Shelby
D
"B4A.example" inside Manifest
DOM85
Aug 13, 2025
Answers
4
Views
650
Aug 13, 2025
Cableguy
GoogleMobileAds error: java.lang.NoSuchFieldError: No static field SEARCH of type Lcom/google/android/gms/ads/AdSize; in class Lcom/google/android/gms
WebQuest
Aug 13, 2025
Answers
1
Views
434
Aug 13, 2025
asales
T
Doing offline self signed TLS/SSL
Timm
Jul 26, 2025
Answers
13
Views
2K
Aug 13, 2025
Timm
T
Q
Immersive Mode - hide the navigation bar
QSerg
Aug 12, 2025
Answers
1
Views
2K
Aug 13, 2025
Alessandro71
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