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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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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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Error Failed resolution in Crashlytics (B4A 13.40 and SDK 35)
asales
Jul 14, 2025
Answers
4
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1K
Jul 15, 2025
asales
Solved
Display after api 35
Uniko Sistemi srl
Jul 15, 2025
Answers
2
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737
Jul 15, 2025
Uniko Sistemi srl
S
Question about navigation bar height
Scantech
Jul 14, 2025
Answers
5
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988
Jul 15, 2025
Erel
ProgressDialogShow2("text", False) is cancelled when the app goes in background
Alessandro71
Jul 14, 2025
Answers
1
Views
633
Jul 15, 2025
Erel
J
Best Practice for Managing Runtime Permissions in B4A Across Android Versions?
jhonnmick
Jul 14, 2025
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1
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754
Jul 15, 2025
Erel
Some... Apps displaying over others are slowing down the device
Magma
Jul 11, 2025
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3
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783
Jul 15, 2025
JohnC
How do you handle the last item in an Edge To Edge screen
Robert Valentino
Jul 13, 2025
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2
Views
906
Jul 14, 2025
Robert Valentino
Page number in B4XPages
Sergey_New
Jul 14, 2025
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18
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1K
Jul 14, 2025
aeric
Solved
[Solved]Can't save Excel file
Theera
Jul 14, 2025
Answers
4
Views
903
Jul 14, 2025
Theera
G
Starting a service with an NB6 Notification object
GuyBooth
Jul 13, 2025
Answers
1
Views
554
Jul 14, 2025
Erel
M
how to connect to esp32 (via WIFI) with B4j/B4a and read any sensor connected to any GPIO ???
manuelsalazar
Jul 13, 2025
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1
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503
Jul 14, 2025
Peter Simpson
targetSdkVersion 36 & IME_HeightChange
fbritop
Jul 11, 2025
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7
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2K
Jul 13, 2025
fbritop
B4A v13.40 beta reports Error during dexing: WARNING: generated classes.zip is too small!
b4x-de
Jul 13, 2025
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1
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641
Jul 13, 2025
Erel
Interprocess communication options for Android and iOS
Alessandro71
Jul 11, 2025
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2
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677
Jul 13, 2025
Alessandro71
User Closed = True
nyinyi
Jul 12, 2025
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1
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515
Jul 13, 2025
Erel
G
NB6 Library and Timestamp
GuyBooth
Jul 11, 2025
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1
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576
Jul 13, 2025
Erel
R
B4XCanvas become uninitialized if app is put in background
RB Smissaert
Jul 10, 2025
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3
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950
Jul 13, 2025
Erel
M
the proper line in manifest to support Android sdk35
Markos
Jul 10, 2025
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3
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788
Jul 13, 2025
Erel
SDK35 - Report from the field
drgottjr
Jul 3, 2025
Answers
4
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2K
Jul 12, 2025
scsjc
J
Bridge won't connect to B4a
Jim-WI
Jul 9, 2025
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9
Views
1K
Jul 12, 2025
Peter Simpson
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