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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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Solved
[Solved]A problem about ' xui.SubExists(Component As Object ,Sub as String,NotUsed As int) As Boolean ' in B4A,B4j and B4i
Theera
Sep 12, 2025
Answers
6
Views
805
Sep 12, 2025
stevel05
I
android resource always fail
irawancepu
Sep 9, 2025
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6
Views
838
Sep 12, 2025
irawancepu
I
G
Confirmation says ok but row not deleted. OK on s21 phone external db not on s25 Dir.internal
garkin
Sep 3, 2025
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12
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1K
Sep 11, 2025
Brian Dean
B
real VR (VR-glass needed)
MasterGy
May 26, 2024
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7
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2K
Sep 11, 2025
scsjc
K
Audio LIB is for B4A, what can I use for B4J and B4I ?
kohlenbach
Sep 7, 2025
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6
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624
Sep 11, 2025
kohlenbach
K
M
B4XPages using sqlite - standard practice
Mark Stuart
Sep 10, 2025
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18
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1K
Sep 11, 2025
LucaMs
Solved
Help with B4XDialog (Create Button Event)
Bladimir Silva Toro
Sep 10, 2025
Answers
6
Views
752
Sep 11, 2025
LucaMs
Converting a string
Sergey_New
Sep 7, 2025
2
3
Answers
49
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5K
Sep 11, 2025
Sergey_New
Z
customlistview adding panels
zmrcic
Sep 11, 2025
Answers
5
Views
641
Sep 11, 2025
Alexander Stolte
Solved
Why i am getting this error and how to fix it
Mehrzad238
Sep 2, 2025
Answers
5
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864
Sep 11, 2025
Mehrzad238
B4XView strange problem with height on different devices
fungms
Sep 10, 2025
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1
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497
Sep 11, 2025
fungms
M
Activity menu with icons in B4XPages
microfan
Sep 4, 2025
Answers
4
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803
Sep 10, 2025
microfan
M
About B4XEncryption library
LucaMs
Sep 8, 2025
Answers
11
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1K
Sep 10, 2025
Erel
UltimateListView database demo not load on a phone
amorosik
Sep 10, 2025
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10
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1K
Sep 10, 2025
LucaMs
manifeste error
moses10
Sep 9, 2025
Answers
1
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705
Sep 10, 2025
Serge Bertet
K
Crossplatform define an eventname for b4xview added with addview
kohlenbach
Sep 9, 2025
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2
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538
Sep 9, 2025
kohlenbach
K
COMBO SPINNER VISIBLE in 2025+ (SOLVED)
netsistemas
Sep 9, 2025
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1
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603
Sep 9, 2025
netsistemas
E
BLE2 - How to read a Bluetooth characteristic descriptor?
emexes
Feb 9, 2019
Answers
10
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17K
Sep 9, 2025
dle635
D
T
Delete a file on a website with http
toro1950
Sep 8, 2025
Answers
4
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611
Sep 8, 2025
toro1950
T
I
execute javascript in b4a and get return string
invocker
Aug 29, 2025
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6
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2K
Sep 8, 2025
b4x-de
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