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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
Tutorials & Examples
Android development starts here.
Please do not post questions in this sub-forum.
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SQLite Database Pragmas
- By JohnD
Pragmas: table_info, index_list, index_info, foreign_key_list
The full list of pragmas can be found at: http://www.sqlite.org/pragma.html. Note, the [match] field of the [foreign_key_list] pragma always shows...
The full list of pragmas can be found at: http://www.sqlite.org/pragma.html. Note, the [match] field of the [foreign_key_list] pragma always shows...
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How I update my apps
- By timwil
I have a very specialized POS application running on Android devices that would not qualify to be entered into the Play Store. These apps need to be updated whenever there are new features or bug...
Downloading files using Service module
- By Erel
It is recommended to use HttpUtils2 instead of this code module. HttpUtils2 is more powerful and is easier to work with.
As discussed in the Services tutorial, some tasks are...
As discussed in the Services tutorial, some tasks are...
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Retrieve HTML content from WebView using WebViewExtras library
- By Gregg Homan
Hello,
The code example below retrieves HTML content from WebView via three different techniques: 1.) MenuItem 2.) LongClick 3.) PageFinished. The code calls addJavascriptInterface() &...
The code example below retrieves HTML content from WebView via three different techniques: 1.) MenuItem 2.) LongClick 3.) PageFinished. The code calls addJavascriptInterface() &...
How they do... #3
- By Informatix
How do they... ? #3
<Version française/french version>
This third tutorial returns to the interface of PlayerPro of BlastOn LLC. We are going to reproduce the artists list and...
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How to Install Android x86 in a Virtual Machine using the VMWARE Player(free)
- By Tron
Hello Developers.
I made a small Video for an x86 Android Device kept in a virtual machine.
How to Install Android x86 in a Virtual Machine using VMWare Player (free) - YouTube
The VM is...
I made a small Video for an x86 Android Device kept in a virtual machine.
How to Install Android x86 in a Virtual Machine using VMWare Player (free) - YouTube
The VM is...
How they do... #1
- By Informatix
How do they... ? #1
(French version/Version française)
This tutorial is the first in a series that will show you how to reproduce some user interfaces (UI) with the classes and...
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Git Version ID's: Getting Tags, Commits and Hash Info
- By Mike Maurice
To have the Git Version Info embedded in your B4A application it is necessary to do several steps.
1. Copy a batch file (gitv.bat) to a location in the path you are using.
2. Get and install the...
1. Copy a batch file (gitv.bat) to a location in the path you are using.
2. Get and install the...
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Guess my number - Visual designer & Events
- By Erel
Please first follow the installation and configuration instructions in these tutorials:
Installing Basic4android and Android SDK
Hello world - Installing Android Emulator
In this...
Installing Basic4android and Android SDK
Hello world - Installing Android Emulator
In this...
FTP Example using a "Download-Queue"
- By DonManfred
It began in the english Forum.
In the english part of the forum i wrote an ftp example for @schimanski a few days ago which uses a "FTP Download Queue". all files are put into a list...
In the english part of the forum i wrote an ftp example for @schimanski a few days ago which uses a "FTP Download Queue". all files are put into a list...
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Two functions on arrays
- By LucaMs
Pending confirmation by Erel, I post three functions about arrays and maps that may be useful.
The first is to verify that an object variable is an array:
The first is to verify that an object variable is an array:
B4X:
Public Sub IsArray(Var As Object) As...
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Displaying Math Formulas in pretty form
Hi,
I want to share with you one method to display math equations and formulas with a very good result without internet connection.I'm using it in one of my apps(in developing) and works fine with...
I want to share with you one method to display math equations and formulas with a very good result without internet connection.I'm using it in one of my apps(in developing) and works fine with...
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