Tutorials & Examples

Service.StartForeground API 24+

• By Jmu5667
• Jan 24, 2017

Hello All.

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

B4X:

Service.StartForeground(1,main_service.n1)

in the service create sub, where...

 

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Setting up Firebase messaging in 5 minutes

• By KMatle
• Nov 28, 2016

Important for Huawei users (or others):

Make sure your energy settings don't pause your app (even the firebase service). Huawei calls it "protected apps". If your app isn't protected...

 

Attachments

• 7.JPG

  15.6 KB · Views: 1,031

Last edited: Dec 7, 2016

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Simple Image viewer & pager

• By Ivan Aldaz
• Jun 11, 2017

Hi all.

This example shows the images contained in a certain directory, with pinch zoom and smooth scroll -when image is zoomed- capabilities (provided by JSTouchImageView library, from...

 

Attachments

• Simple_ImageViewer.zip

  7.9 KB · Views: 1,235

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Help file for beginner programmers on Android platform.

• By Lakhtin_V
• Oct 27, 2017

I made for beginer detailed description of how to prepare a computer and phone to create mobile applications on the platform Android. I myself Russian therefore made the instruction in Russian and...

 

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Creating a cross-platform "dialog" class with input validation

• By Misterbates
• Oct 13, 2017

I'm currently developing an App that'll be released for Android and IOS. It presents "files" to the user, allows them to select a file and then presents the content for editing, and finally allows...

 

Attachments

• ValiDialogs (0.02).zip

  15.7 KB · Views: 601

Last edited: Oct 19, 2017

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[B4X] FTP Server code update for multi-network card hosts

• By OliverA
• Oct 16, 2017

Update (2017/10/17): For code changes that make this a true B4X update, see post #4

This relates to the FTP Server code posted here...

 

Last edited: Oct 17, 2017

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Use a handheld Bluetooth scanner via SPP mode

• By KMatle
• Sep 3, 2017

Update: Code to reconnect added


I've bought a BT handheld scanner on Ebay for about 45€ like this:


It comes with a sheet with barcodes which can be scanned to do some...

 

Last edited: Oct 21, 2017

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Connect Android to MS SQL Server Tutorial

• By Erel
• Dec 11, 2011

A new more powerful framework is now available: Remote Database Connector.

This tutorial is a follow up to the previous tutorial that explained how to connect to a MySQL...

 

Attachments

• MsSQL.zip

  6.3 KB · Views: 3,803

Last edited: Jun 27, 2016

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Adapt your layouts using SetLayout

• By LucaMs
• Sep 1, 2015

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...

 

Attachments

• upload_2015-9-1_1-32-15.png

  28.7 KB · Views: 788
• upload_2015-9-1_1-43-32.png

  205.6 KB · Views: 678
• upload_2015-9-1_1-44-8.png

  103.2 KB · Views: 747
• lm SetLayouts Gen.zip

  15 KB · Views: 864

Last edited: Sep 1, 2015

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(old) Google Maps Android v2 tutorial

• By Erel
• Dec 18, 2012

If you are using B4A v5.80+ then please follow this tutorial: https://www.b4x.com/android/forum/threads/google-maps.63930/#post-404386

GoogleMaps library requires v2.50 or above...

 

Attachments

• GoogleMaps.zip

  17.8 KB · Views: 12,004

Last edited: Feb 24, 2016

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Creating a sticky service - long running background tasks

• By Erel
• Mar 7, 2013

Edit: Things have changed with newer versions of Android and new restrictions. Sticky services should not be used any more.

Background service example...

 

Last edited: Dec 9, 2018

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B4A -interpreter for Android / programming on the device

• By birnesoft
• May 27, 2014

B4A-Interpreter

I've made a B4A interpreter that runs B4A-Code on Android
to write easy B4A-test programs on my Phone.
To make an app only copy the source code back to the...

 

Attachments

• androidb4a.zip

  8 KB · Views: 973
• androidb4a2_7.zip

  7.3 KB · Views: 987
• B4AInterpreter0_3.zip

  354.4 KB · Views: 1,186
• B4Ainterpreter0_4.zip

  355.2 KB · Views: 862

Last edited: Jun 1, 2014

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Scrollview: Adding labels and setting their height automatically depending on the text(size)

• By KMatle
• Sep 16, 2017

This is just a simple example (and yes, there are others doing similar). You can modify this example it by using other colors, gradients, adding other views and so on to have a simple but good...

 

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Firebase Invites/ DynamicLink/ DeepLink [relationship between]

• By fredo
• Sep 15, 2017

Firebase has several extremely useful free server-based features for developers of mobile apps.

Spoiler: free?

The free "Spark Plan" is suitable for small business applications.​

...

 

Last edited: Sep 15, 2017

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Horizontal ScrollPage

• By Emme Developer
• Sep 7, 2017

Hi everybody!
I want to share this simple example of an HorizontalScrollView that works like ViewPager. Main difference between this and ViewPager is that HorizzontalScrollview has an only inner...

 

Attachments

• HorizzontalScrollPage.zip

  7.1 KB · Views: 916

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Android In-App Billing v3 Tutorial

• By Erel
• Jun 6, 2013

New version: GooglePlayBilling - In App Purchases

Spoiler: Old version. Not relevant

This tutorial covers the new API for in-app billing provided by Google.

The main differences between v3 and the previous...

 

Last edited: Mar 22, 2020

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Third party tool for screen recording

• By Erel
• Sep 6, 2017

I'm mostly using B4A-Bridge to connect the IDE to the Android devices. The built-in video recording feature doesn't work with B4A-Bridge.

I found a good alternative...

 

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Programmatically Setting AIRPLANE_MODE_ON and Off

• By fabero
• Aug 3, 2011

How to set Airplane mode ON e OFF?

I see this:
anddev.org • View topic - How to set airplane mode on/off

How I can traduce it, with B4A?

 

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ScrollView example

• By Erel
• Nov 16, 2010

The ScrollView is a very useful container which allows you to show many other views on a small screen.
The ScrollView holds an inner panel view which actually contains the other views.
The user...

 

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OCR OFFLINE - Tesseract

• By joilts
• Aug 28, 2015

I'm working in a project that needs OCR offline. Made a small progress and decided to share here and get some feedback.
I've searched a little bit at this forum and google about it. Found options...

 

Attachments

• tessTest.zip

  11.9 KB · Views: 2,134

Last edited: Aug 28, 2015

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