Tutorials & Examples

I found a Youtube video showing you how to install Android 8.0 on a Virtualbox.
This gives you Android running on a desktop (virtual) machine, and it is all free!
(I knew you'd like the "free"...

 

Hi All.
Here is a very very simple example of how make a chat using clv.
the text and name is ajustable automatic, you can receive any text and the code will ajust using the correct size.

The...

 

A lot of developers like me use php as the backend component on a server to communicate with B4x apps. My intention is to create a thread with some "How to's" and best practices. Please feel free...

 

This guide is obsolete ! It is no more updated.
Please use the B4X Booklets.

A User's Guide in pdf format is available here : www.b4x.com/android/files/UserGuide.zip

This...

 

This simple example shows how to add & access views (buttont, labels, imageviews, scrollviews) to get a nice & good looking layout.

I don't use dip (except at one code line) to have a "fixed &...

 

This example shows how to filter the contents of a database and load the results in a listview using an edittext. for each letter entered in edittext the results are shown in the listview. It...

 

Don't use this. SimpleMediaManager is 100 times more powerful: [B4X] SimpleMediaManager (SMM) - framework for images, videos and more

Downloading images with HttpUtils2 is quite simple...

 

During the introduction to Amir_RecyclerView (ARV), it was necessary to understand the basic relationships between data and display.

Spoiler: Standard Listview

ListView is a view group that displays a list...

 

I happened to come across a very well written, and absolutely beautifully illustrated, article on how to best use animation in UX. I thought the forum might appreciate it, so here’s the link...

 

During the basic training in Amir_RecyclerView (ARV), a small test project was created, which may help RV newcomers to familiarize themselves with RecyclerViews.

Topic: "React to...

 

Attached you find an example with a ScrollView with a Panel higher than the screen.

The layouts are designed in the Designer, not in the code.

There are 2 layout files:
- Main with the...

 

One of the challenges that developers of any non-small Android app need to deal with, is the multiple possible entry points.

During development in almost all cases the application will start from...

 

See here: https://firebase.googleblog.com/2018/09/handle-fcm-messages-on-android.html?linkId=57036840

There are 3 types of messages you can send combined with your app's state (fore- or...

 

I developed a class (compiled in library) that makes use of Typeface.MATERIALICONS, but when I tried using it there was this error:

java.lang.RuntimeException: Font asset not found...

 

This solution is compatible with B4A, B4J and B4i.

Up until now there were two ways to send emails:

1. Using the default mobile app which required the user to actually send the message...

 

Starting from Android 5 (API 21) there is better support for kiosk applications.
Kiosk applications = applications that...

 

When you join a forum you have to define a username and type in your email address and a password. After that you receive an email to finish the registration. Today I want to show the process how...

 

Hi everyone:

After several test, now I can use the jSignature javascript plugin I was using in my web, in my B4A app, in order to update my database from b4a the same way I'm doing in my web. I...

 

When using an online repository such as GitLab, you can add a file named ".gitattributes" with the following content:

*.bas gitlab-language=vb
*.b4j gitlab-language=vb
*.b4a gitlab-language=vb...

 

I found it hard to find a solution to a problem that I think someone else could have
if you leave a service running with:

#StartCommandReturnValue: android.app.Service.START_STICKY

or

...