Tutorials & Examples

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

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Check if the application is running on a Chromebook

If you want to check if the application is running on a Chromebook (for example to do some specific GUI reconfiguration to run in a resizable Window), you can use the following routine.
Hope it...
 
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How to convert from Firebird to Sqlite

I had to deal with a database format transformation problem from Firebird to SqliteDb
I want to share my experience because I've already seen some users who asked questions about Firebird...
 
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User selection of a voice for Text To Speech.

I've just added a speech to text facility to my note taking app using

SpeechToText - Continuous Offline Voice Recognition

This is a wrapper of Acephei VOSK , With this, you can add continuous offline speech recognition feature to your application, NOTE: As it works offline the app should be complied with the voice model. It will increase the app size by 30-40Mb. The accuracy depends on the voice model. You can...
www.b4x.com

and text...
 
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Intents and receivers

With the new imodules that allow you to work better with the intent and receivers, it is necessary to develop some examples of how to use them (even before it could be done but not in...
 

Attachments

  • device_filter.zip
    413 bytes · Views: 608
  • IntentUSB.zip
    10.6 KB · Views: 581
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Geofence - Monitoring a region in the background

Geofencing is an Android feature that allows your app to be notified when the user enters or exits a monitored region.

The nice thing about this feature is that your app doesn't need to run for...
 

Attachments

  • Geofence.zip
    15.6 KB · Views: 758
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Audio Ringbuffer

if you want to build instant music in apps from single sounds, it is important that the samples are absolutely synchron and perfect in timing. So you should send one single stream to the system...
 
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FusedLocationProvider + Resolution Dialog

** This is the only option to enable location services from inside your app. **

Example was updated and is based on B4XPages.
Don't miss:

1. ShowResolutionDialog sub that is added to Main. It...
 

Attachments

  • Project.zip
    14.6 KB · Views: 1,892
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BLE nRF Connect pre-BLE2 problem solving

It is surprising how often the basics get missed, when embroiled in heat of battle of programmer vs hardware, operating system, complex apis and libraries, etc.

I have found that whenever my BLE2...
 
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[B4X] [B4XPages] GoogleMaps example



Example of showing a Google map, in a cross platform B4XPages project. The APIs of the three GoogleMaps libraries are quite different from one another, so we need to use platform...
 

Attachments

  • Project.zip
    10 KB · Views: 2,661
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New online AI Regex Generator!

Check this out!

sheetai.app which helps use ai in google sheets, just ask it and done!

Quick Demo:



Tutorial:

 
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Webview & File.DirAssets - Enough Already

UPDATE: AFTER READING THIS POST, PLEASE REFER TO POST#5 FOR A BETTER SOLUTION (AT LEAST, IN MY OPINION).
a code module provided by member Ivica Golubovic allows you to continue using...
 

Attachments

  • assets.zip
    82.9 KB · Views: 853
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B4A Book Now Covers Version 11.20



I am happy to announce that both the paperback and electronic versions of the B4A tutorial and reference book “B4A Rapid Android App Development using BASIC” by Wyken Seagrave have...
 
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[B4X] AS WheelPicker PlusMinus Example


This is an example project to demonstrate what is possible with the beautiful ASWheel. From version 2.0 it is possible per function animated (also possible without animations)...
 

Attachments

  • AS WheelPicker PlusMinus Example.zip
    180.2 KB · Views: 756
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Word wrap paragraph text to specified maximum characters line length

We needed to do some word-wrapping re: this thread and figured I may as well post my tawdry effort in case anybody else is looking for ideas ? or code to hang s**t on ?

It has some niceish...
 
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Exploring the b4x UltimateWebView with SithasoDaisy, #TailwindCSS + #DaisyUI UI Toolkit

Hi

This seeks to document my experiences of the UltimateWebView and the newest Sithaso Holdings UI kit, named SithasoDaisy, a TailwindCSS UI kit built on top of BANano + B4x.

Well, this is my...
 
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LatLong To Timezone

Hi,
I was looking for a code to know the timezone information from Latitude and Longitude coordinates and I found the code here LatLongToTimezone but it is written in java so I used it in...
 

Attachments

  • B4A_TimezoneMapper.zip
    434.5 KB · Views: 488
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[B4X] [BitmapCreator] Cross platform Falling Sand game



The main challenge here is the performance. All particles are updated if needed and redrawn every cycle.

The Particles...
 

Attachments

  • B4A_FallingSand.zip
    25.6 KB · Views: 1,090
  • B4i_FallingSand.zip
    177.6 KB · Views: 880
  • B4J_FallingSand.zip
    24.6 KB · Views: 909
  • GameUtils.bas
    6.5 KB · Views: 993
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Run B4A in Ubuntu 19.04

1) sudo apt install -y wine winetricks

2) winetricks dotnet452

3) wine B4A.exe

4) winetricks
install windows DLL or component
vcrun2010



5) right click icon B4A...
 
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[B4X] [B4XPages] Barcode Reader



B4A + B4i barcode reader.

Don't miss:

- #PlistExtra in B4i.
- Manifest code + #AdditionalJar in B4A

Depends...
 

Attachments

  • BarcodeReader.zip
    183.5 KB · Views: 2,675
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