Tutorials & Examples

Computersmith64 · Aug 17, 2017

There is a very useful online tool called SQL Fiddle that allows you to build test tables, populate them with data & run queries on them. This is great if you are trying to figure out how...

wonder · May 7, 2015

Using a PlayStation 3 controller with your Android Device
This tutorial is an extension of the B4A Generic Gamepad Support thread.

As you can...

azzam223 · Aug 28, 2017

Hello Every Who can not know to use procedure with rdc there are two ways To do that

the first one is use Call keyword like this

B4X:

sql.getcategoryproducts=Call Getprodbycat(?)

this way...

shb777 · Aug 24, 2017

Adding Tripod Mode to your DJI Mobile app

Tripod mode for DJI drones, limits the speed of your drone to around 2 mph. So you're less
likely to hit something, when your in confined spaces, or...

Erel · Feb 24, 2011

There are several options to develop with B4A:
- Android emulator or a VM.
- Connect to a real device in USB debugging mode
- Connect to a real device with B4A-Bridge.

I recommend starting with...

rscheel · Aug 10, 2017

A small example like loading an image with PostMultipart and PHP, I have been useful, you can adapt it needs.

Code B4A

B4X:

Sub CargaImagen
    Dim j As HttpJob
    Dim img As String =...

walt61 · Aug 18, 2017

Hi all,

I was looking into 'de-spaghettifying' my code that uses @DonManfred 's MsMariaDb...

PhilipBrown · Aug 16, 2017

B4A is now available in a book that covers version 7.01.

For purchase visit http://pennypress.co.uk/b4a-russian/

ANDROID – это полюбившаяся во всем мире операционная система для мобильных...

Matti81 · Aug 15, 2017

This demo app shows how to use RenderScript ScriptIntrinsics in real time image processing. As an example the camera preview is converted into a cartoon like image. The processed image can be...

Erel · Aug 11, 2017

This tutorial explains the differences between the three methods.

The bottom line is that the best option is to use LoadBitmapResize and set the container gravity, if possible, to Gravity.CENTER...

Erel · May 16, 2017

Starting from B4A v7.0 the following warning will appear for DoEvents calls:
DoEvents is deprecated. It can lead to stability issues. Use Sleep(0) instead (if really needed).

The purpose of...

rkmoray · Jul 25, 2017

In my new app, I am using the Starter service. I have a few variables I am trying to create, and consume them in my "main" form.
But when I start my app, I get an error message of an undeclared...

Alexander Stolte · Jul 25, 2017

I added a new feature to my apps yesterday, this feature show you as text how far you are from the other coordinate.

This looks so:

within 1 kilometer: very close
More than 1...

LucaMs · Jul 21, 2017

I developed a simple example about how I think you should handle easily views and values of a CustomListView item.

3 things:

1) constants pointing to the views order in the item;
2) two custom...

Sandman · Jul 16, 2017

This isn't really a tutorial but rather a recommendation for a diff tool. Sometimes you need to compare files, or even directories, and doing it manually is just too painful and difficult. I've...

KMatle · Jan 6, 2017

When you register to FCM your app will receive a FCM token. Another app can send a message to this token. Probem here: How do I know the token of another device/user? Usually you have a server...

Multiverse app · Mar 31, 2017

To deliver more engaging viewing experiences to their users, many Android OEMs are experimenting with new, super widescreen smartphones. Samsung has just announced a new flagship device, the...

Erel · Dec 12, 2010

It is simpler to parse XML with Xml2Map class: https://www.b4x.com/android/forum/threads/b4x-xml2map-simple-way-to-parse-xml-documents.74848/

The XmlSax library provides an XML Sax...

Erel · Jan 7, 2016

After making more than 58k posts in the forum, I decided that it is a good time to build a list of tips and common mistakes. 12 points, in no particular order:

Separate code from...

Misterbates · Jun 17, 2017

The attached example presents the user with a two-level hierarchical view of data and uses ULV to implement the following:

Showing the hierarchy using indentation of sub-items
Drag/Drop...

Tutorials & Examples

Show only:

SQL Fiddle

Using a PlayStation 3 controller with your Android Device

Using Procedure in rdc Server

Adding Tripod Mode to your DJI Mobile app

B4A-Bridge a new way to connect to your device

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Upload image to server, PostMultipart and PHP

[B4A] MsMariaDb with Resumable Subs

B4A 7 Book in Russian

B4A_CartoonCamera : Real Time Image Processing using Renderscript Intrinsics

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LoadBitmap / LoadBitmapResize / LoadBitmapSample

DoEvents deprecated and async dialogs (msgbox)

Global variables in Starter service not initializing

[Coordinates] Distance Features

Get all views or values of a CustomListView item

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Meld: Nice tool for diffing files and directories

Firebase Messaging: Chat app without server

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Update your app to take advantage of the larger aspect ratio on new Android flagship devices

XML Parsing with the XmlSax library

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[B4X] Tips for B4X developers

ULV - combining drag/drop and swipe to delete with a hierarchical data structure

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Tutorials & Examples

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