Tutorials & Examples

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...

 

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

As you can...

 

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

sql.getcategoryproducts=Call Getprodbycat(?)

this way...

 

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...

 

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...

 

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

Code B4A

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

 

Hi all,

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

 

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...

 

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...

 

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...

 

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...

 

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...

 

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...

 

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...

 

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...

 

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...

 

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...

 

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...

 

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:

1. Separate code from...

 

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...