Tutorials & Examples

Android development starts here. Please do not post questions in this sub-forum.

[B4X] Net library (FTP, SMTP, POP) with Wait For

Starting from v1.70 of Net, jNet and iNet libraries the asynchronous methods return a 'sender filter' object.
This object can be passed as the sender filter parameter in a Wait For call.
This...
 
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Create an Android virtual machine or laptop

Hey everyone,

I just came across this video and I thought I should share it with you:

 
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[B4X] B4XTable - Setting cell (default label) properties

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Youtube playlist with xml2map

hi..
I prepared the youtube playlist using the examples in the forum.

Used libraries:
➡ Javaobject
➡ Labelextras
➡ Okhttputils2
➡ Snyoutube
➡ Stringutils
➡ Xcustomlistview
➡ Xml2map
➡ Xmlbuilder...
 

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  • 1.jpg
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  • 3.jpg
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  • 2.jpg
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[B4X] Nested layouts



Lets say that we want to build a layout such as the above where the screen is split into two halves.

If we try to build this layout with a single layout file we will quickly meet a...
 

Attachments

  • NestedLayouts.zip
    12.8 KB · Views: 620
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[Tip] Reset the manifest editor code to the default code

Use case: you downloaded an old example and you want to reset the manifest editor code so it will have the correct targetSdkVersion and theme.

Open the manifest editor, delete all text and save...
 
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[B4X] [XUI] Drawing with B4XCanvas

B4XCanvas is the cross platform version of Canvas.

Steps to using B4XCanvas:

1. Initialize and pass the target view. In most cases it will be a Panel (or Pane). It must be a Pane in B4J.
2. Make...
 

Attachments

  • xSmiley_B4A.zip
    10.8 KB · Views: 1,204
  • xSmiley_B4J.zip
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  • xSmiley_B4i.zip
    5.3 KB · Views: 698
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TabStripViewPager - Better ViewPager

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  • TabStripExample.zip
    10.9 KB · Views: 3,687
  • TabStripViewPager_Library.zip
    30.5 KB · Views: 2,858
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ContentChooser Example (select image at phone)

Here is a ContentChooser Example project to choose a image at phone for use in a activity with image view. it works with B4A 9.x and Android 8.1...
 

Attachments

  • ContentChooser Example.zip
    9.4 KB · Views: 2,738
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Free Mini Course Android Development Environment Preparation (B4A)

Good morning,
I'd like to share the free "Android Development Environment Preparation" course.
This course helps prepare the B4A development environment to start developing Android apps.
I thank...
 
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[B4X] B4X lib automatic build

Trying to find an automated way to build a B4X library, I found this method, I'd like to share for improvements and suggestions.
I'm using B4J as the development environment for the sake of...
 
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QR Code - "Store" image/bitmap in a QR Code

See attached B4A project:

1. It takes an image (png or jpg) and convert it into a byte array
2. The byte array is converted into a Base64 String
3. The String is then converted into a QR Code...
 

Attachments

  • b4aQRImage.zip
    10.4 KB · Views: 559
  • core-3.3.2 (2).zip
    493.6 KB · Views: 544
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? Retrieving 2 JSON data feeds from an online server - Shared module with B4i

Hello All
I might be a bit late to the show with this one, but I've been busy completing paid work. Hopefully new members will find this useful.

The B4i example can be found here...
 

Attachments

  • JSON.zip
    12.3 KB · Views: 469
  • Android-CoronavirusCOVID-19_V1.0.0.1.zip
    62.2 KB · Views: 489
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Arduino / B4A

Hi all. Interfacing B4A with Arduino is really very simple and you can create any kind of application.
This is a simple example:



Code B4A:

B4X: 
#Region  Project Attributes...
 
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B4A Rapid book updated to B4A 9.80

I am happy to announce that the both the paperback and electronic versions of the B4A tutorial and reference book “B4A Rapid Android App Development using BASIC” by Wyken Seagrave have now been...
 
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Video corso Preparazione ambiente di sviluppo B4i

ENGLISH:
Good morning,
I would like to share the free course "Preparing development environment for B4 IOS".
This course helps prepare the B4I development environment and the MAc to start...
 
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[B4X] [XUI] ASTabMenu with xCustomListView Example


Hello Forum,

in this Example i want to show you, how to use the ASTabMenu togehther with the xCustomListView, to handle a lot of Tabs without getting into layout problems...
 

Attachments

  • B4A Example with xCustomListView.zip
    7.8 KB · Views: 963
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[B4X] SQL with Wait For

The new resumable subs feature, introduced in B4J v5.50, B4i v4.00 and B4A v7.00 (to be soon released), makes it simpler to work with large data sets with minimum effect on the program...
 
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Firebase Realtimedatabase Create a room and messages inside

Hello,

I've been working with Firebase's realtimedatabase this week. There is no example yet of how to create rooms and send messages, but it is important for anyone who wants to make a chat in...
 
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Android home screen widgets tutorial - part I

Edit: widgets are handled with receivers now. See the attached example.

This tutorial will explain how to implement your own home screen widgets (also named App Widgets).

It is important...
 

Attachments

  • HomeWidgets.zip
    24.6 KB · Views: 780
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