Tutorials & Examples

Hello everyone,

First of all, I want thank Erel, DonManfred and KMatle because a lot of the codes for them.

In this example (Select an image from gallery and display it, Resize the image, Save...

 

The attached project has 10 classes that create the following 1D and 2D barcodes:

1. QR Code - 2D
2. Datamatrix - 2D
3. Aztec Codes - 2D
4. PDF417 - 2D
5. Code 128
6. EAN8
7. EAN13
8. Code 39
9...

 

See the attached project. It uses a library that wraps a project that you can find here. There are files in the Objects/res/drawable and Objects/res/values folders that this...

 

Lib files are in the /files folder

 

The attached project is a porting of the B4X_SQLiteLight2 project which is included in the B4X SQLLite database booklet.
It uses as much as possible XUI objects and common code.
Tested with...

 

Hi Guys

I would like to share with you something that most of you maybe allready know but also if there are some people that still dont know that, it could be very helpfull for them.

There are...

 

A code module to automatically generate SetLayout statements with percentage values.

It is more convenient to use than my example:
Create your layouts based on percentages...

 

today i was in the requrement to write a search-routine in Database.
given was a table with lat an lon values. Goal was to find the nearest Entry.

Tablename: nw05
Fields: gidx (index), glat...

 

Hello All.

Just thought I would share some info with you. Most of our services in our apps would use

Service.StartForeground(1,main_service.n1)

in the service create sub, where...

 

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 =...

 

I needed to send a text file created by my program to a users PC using Bluetooth.
Not finding anything exactly like this in the B4A forums I searched the web and came across this article...

 

I have tested this on an Android 7.0 device only - take a screenshot of your activity. You need to enable the JavaObject library to make use of it.

@JordiCP solved my initial problem here...

 

In this example you can find a short example which shuffles a playlist (mp3´s for ex.).
Here i´m using the alphabet (A to Z)

Sub Process_Globals
    'These global variables will be declared...

 

See attached B4A project. It implements a digital clock with Arabic numerals. You can edit the png files in the /files folder of the B4A project with something like GIMP and clean them up / change...

 

This is an attempt to create a RPN calculator (Reverse Polish Notation - as per HP calculators). You can store (STO) and recall (RCL) values of register X. It will store and retrieve last value of...

 

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 attached project comes from here (I have conducted some open heart surgery on it). It is working perfectly on my 7" tablet but on my Samsung S4 mini, unlike what is the case on my...

 

Have done this just for the fun of it. Have wrapped this posting. The B4A code is short and sweet:

#Region  Project Attributes
    #ApplicationLabel: Compass
    #VersionCode: 1...

 

This is a simple project that makes use of the device's vibrator. You can do the following:
1. Switch the vibrator ON for a specified duration of time (in milliseconds)
2. Switch the vibrator...

 

This is for people like me - B4A libraries for Dummies 101 (via SLC). I will attempt to explain it the best I can (there is nothing in this library that one can't do via B4A code. This is purely a...