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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
Java Question
First mistake when recompiling an old project
Mar 2, 2026
Sergio Castellari
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Solved
ZOMaterialComponents library with new B4A 12 and SDK - NoClassDefFoundError - Lkotlin/jvm/internal/Intrinsics
mcqueccu
Jan 2, 2023
Answers
4
Views
3K
Jan 2, 2023
mcqueccu
Notification in Api level 31+ with Color and Typeface
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Jan 1, 2023
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3
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Erel
Question For Warwound
Terradrones
Jan 1, 2023
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1
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2K
Jan 1, 2023
M6SOFT
M
how can receive text in B4A from arduino esp8266 server with Websocket library
beheen
Jan 1, 2023
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2
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Jan 1, 2023
beheen
Problem with Firebase library is calling the SafetyNet Attestation API
NGUYEN TUAN ANH
Dec 29, 2022
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4
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Jan 1, 2023
NGUYEN TUAN ANH
Converting Coordinates
Terradrones
Dec 28, 2022
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13
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5K
Jan 1, 2023
Brian Dean
B
How do I make a service run at the moment I want while I run another application in the foreground?
carlos7000
Dec 29, 2022
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11
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Jan 1, 2023
carlos7000
Error compiling admob sample
AnandGupta
Dec 30, 2022
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2
Views
1K
Jan 1, 2023
AnandGupta
J
How to get the saved file name.
Jerryk
Dec 30, 2022
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1
Views
822
Jan 1, 2023
Erel
H
BleManager2 Device Lost
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Dec 31, 2022
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1
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2K
Jan 1, 2023
Erel
What does this message mean? Skipping missing maven: org.jetbrains.kotlin/kotlin-stdlib
vecino
Dec 31, 2022
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1
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2K
Dec 31, 2022
tchart
B
ExoPlayer Song List - Get Title
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Dec 30, 2022
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2K
Dec 31, 2022
kisoft
A
Solved - Error in anywheresoftware.b4a.keywords.Common.StartServiceImpl
Alex_197
Dec 31, 2022
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2K
Dec 31, 2022
Alex_197
A
Get app date
Zeev Goldstein
Dec 31, 2022
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1K
Dec 31, 2022
Zeev Goldstein
G
Converting an old app to use B4X pages
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Dec 30, 2022
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2K
Dec 30, 2022
GuyBooth
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Solved
How to embed B4A version number in code
GuyBooth
Dec 30, 2022
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2K
Dec 30, 2022
jahswant
G
targetSdkVersion and minSdkVersion with B4A v12
GuyBooth
Dec 30, 2022
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1
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3K
Dec 30, 2022
Rubsanpe
How to set Common properties [SOLVED]
AHilberink
Dec 29, 2022
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3
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Dec 30, 2022
AHilberink
Background music
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Dec 28, 2022
Answers
6
Views
3K
Dec 30, 2022
Spright
S
Any interest in using B4X/B4A for writing apps for the Oculus?
scottie
Dec 30, 2022
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1
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2K
Dec 30, 2022
Erel
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