Tutorials & Examples

Private sign keys created with B4A v7.80 or less together with Java 8u151+ will fail with the above error message. Note that it does not affect existing keys.
It is related to a change in the...

 

Google has acquired a company named Firebase and is now offering many backend services under the Firebase umbrella. Most of them are free.

Integrating the services is relatively simple.

1. Use...

 

Hello.
Probably the majority of using GPS, wondered how to display the GPS Status in OsmAnd:

So,
wanting to display the GPS Status in the OsmAnd 2.9.3 application, publication date 2018-02-08
the...

 

check out for Basic4android ebook on Amazon on this link:

https://www.amazon.com/gp/aw/d/B077...16464991&sr=8-1&pi=AC_SX236_SY340_FMwebp_QL65

or how to...

 

if you're having problems with the resolution, or your age ( ) and you see the code too small ,try to use this tricky feature in VLC Player called "interactive zoom"

you can see all code...

 

I write for me, and share.
Add functionality to a log and logcolor functions.
Easy to implement.
Source Code for enhance or fix.
CSBuilder, TextWriter & TextReader implementation.

...

 

The result of compiling your application is an APK file. This is a package file that contains the compiled source code and the assets files.
The APK file must be signed before installation...

 

With the first steps on JAVA, my first program was an IRC SERVER. Subsequently I have evolved it and it has become the base to realize a SERVER for webchat.
I developed for a couple of...

 

With the IRC Client complete the work started with the IRC Server.

As already explained is a Basic version, to give only an idea of how it works, but it is not complete with all the commands, and...

 

Better implementation, based on B4XPages: https://www.b4x.com/android/forum/t...-asyncstreams-b4xserializator.119011/#content

New video tutorial...

 

Android can synthesize and play text.
Using the TTS library you can easily add this feature to your application.

Sub Process_Globals...

 

Downloading resources is simpler with the new Resumable Subs feature.

Using Wait For we can wait for the JobDone event in the same sub that started the download.
No...

 

Hello,

as @sorex requested, this is a short tutorial for mediation with admob for chartboost.

1) Register with chartboost. Add your app. Navigate to campaigns / Publishing . Click...

 

A simpler and better looking solution is now available: https://www.b4x.com/android/forum/threads/tabstripviewpager-better-viewpager.63975/

StdActionBar library allows you to...

 

B4A Sdk Manager v2 adds support for managing Android Virtual Devices (AVDs):

Before you start, make sure to...

 

- working with OBD ELM 327 Wifi, ex. V-Link interface.

 

Just a simple example. You can (of course do a lot more with it)

There are a lot of libs about creating pdf's. With Erel's example...

 

Version sans CustomView

#Region  Project Attributes
    #ApplicationLabel: Digital_dashboard
    #VersionCode: 1
    #VersionName:
    #SupportedOrientations: landscape...

 

https://android.jlelse.eu/mastering-shadows-in-android-e883ad2c9d5b

 

There are numerous threads in the forum about this, but I didn't have much luck with them. I wanted to disable the suggestions, but they always showed. I saw one suggestion setting the field to be...