Tutorials & Examples

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Google Authorization – Fix for ClearTokenRequest Class Not Found Error

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[B4A] [B4XPages] OSM Maps / FusedLocationProviderClient GMS

May 4, 2024 - Start of tutorial post...

Based on:

Open Street Map viewer - GPS

Hi, This b4Xlib contains a custom view (cvMap) which can display Open Street Map. The tiles are retrieved from the internet and cached in a database. You can add shapes and images on the map. UI : - Lat/lng Center of the map - Zoom Level - Compass Direction with rotation - Scale - Button...
www.b4x.com

The original project was based on the GPS object /...
 
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Android 16KB Page Size Compatibility Checker

This script checks for all the necessary markers to be sure your APK/AAB/SO files are 16KB page size compatible.
It has been simplified to easy usage.


What Does This Check?​

Starting with...
 
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Android Live Wallpaper tutorial

The user can set live wallpapers by long pressing on the home screen and choosing Wallpapers - Live Wallpapers.
Creating a live wallpaper is not too difficult.
A service is responsible for...
 

Attachments

  • WallpaperExample.zip
    18 KB · Views: 237
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"Stick Header" CLV Demo

A demonstration of using a "Stick Header" (Floating Title)...

With Erel's help HERE, I was able to create my version of a "floating title", as Erel has coined it.

If you use ChatGPT...
 

Attachments

  • CLV_StickyHeader.zip
    9.2 KB · Views: 211
  • HomePosition.jpg
    77.7 KB · Views: 420
  • ScrolledToMarch.jpg
    77.5 KB · Views: 377
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Less back and forth with your smartphone and PC

As mobile developers, we all have the frustrating experience of taking our eyes off our smartphone and staring at the PC screen, and vice versa. Microsoft "Phone Link" is a useful Windows app that...
 
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Debugging your app on real phone without USB cable or B4A bridge

Using a USB Cable for debugging apps is faster and easier than using B4A bridge. But as you know, being always connected to the USB port will decrease the battery life. With this instruction, you...
 
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[XUI] CustomListView with floating titles



Title items are added to the list.
A Panel is set above the list. The panel shows the current title when the top visible item...
 

Attachments

  • CLV_FloatingTitle.zip
    9.4 KB · Views: 1,545
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[B4X] RandomUser API - SMM + lazy loading list + DDD



Cross platform example of showing a list of users, retrieved from https://randomuser.me/

The API returns a list with the data of 150 random users. The list is parsed and added...
 

Attachments

  • RandomUser.zip
    187.7 KB · Views: 275
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User Login Demo - how-to features

Hi y'all,
I've been working on a demonstration app that would show a bunch of how-to's.

Specifically, how to use an "admin" user and a regular user (non-admin) for login data admin (CRUD).
All...
 

Attachments

  • UserAdminDemo.zip
    30.1 KB · Views: 250
  • 1.jpg
    179 KB · Views: 495
  • 3.jpg
    264.9 KB · Views: 480
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Share SQLite database between 2 devices

This is just a proof of concept to show that Device A behave like a server hosting a database and Device B connects to it accessing the "shared" database. It is a response to this question...
 

Attachments

  • ShareDB.zip
    17.6 KB · Views: 679
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OSMDroid - MapView for B4A tutorial

Attachments

  • 01 - SimpleMap.zip
    5.8 KB · Views: 5,214
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Lottie Example with 16kb support

This example is based on the Lotti Library by DonManfred found here. (It still works)

Lotti

This is a wrap for this Github project. Lottie ...|https://www.b4x.com Author: DonManfred Version: 3.4 LottieAnimationView Functions: addAnimatorListener (listener As Animator.AnimatorListener) addAnimatorUpdateListener (updateListener As ValueAnimator.AnimatorUpdateListener)...
www.b4x.com

I tried it on 16kb android 15 emulator and...
 

Attachments

  • LottieEx16kb.zip
    13.8 KB · Views: 208
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[B4X]How to Implement Lottie in B4XPages (AXrLottie B4A, iLotttie B4i and B4J)

This is B4XPages example for LOTTIE implementation on Android (B4A), iOS (B4I) and Desktop (B4J)

B4A Implementation
Uses AXrLottie. Download the library and dependencies...
 

Attachments

  • LottieB4XExample.zip
    102 KB · Views: 701
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[B4X] Class templates

*** This is a trick, a discovery by @aeric, really very useful ***

[B4A-B4J-B4i]

[This is a long post but the process is much simpler than it...
 

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  • 1758258608074.png
    4.4 KB · Views: 341
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[B4X] #CustomBuildAction

The #CustomBuildAction attribute allows running external programs during the compilation process.
The syntax is:
B4X: 
#CustomBuildAction <compilation step>, command to run, zero or more arguments...
 
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[B4X] Comment Links and #Macros



Comment Links

Code comments can include clickable links. The following schemes are supported:

http(s):// - Link will be...
 
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Expandable list based on CustomListView

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[B4X] TextEditor - Save and load external files

This is a B4i and B4A example, which demonstrates various external files related tasks.



The behavior is not exactly the same as the platforms capabilities and behavior...
 

Attachments

  • TextEditor.zip
    184.2 KB · Views: 2,798
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[B4X] WebView + CKEditor (rich text editor)



This is a cross platform example that adds CKEditor rich text editor using WebView: https://ckeditor.com/ckeditor-5/
Make sure to read CKEditor licensing and pricing...
 
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