Tutorials & Examples

Last year, I commissioned Biswajit to write a library for the new Google Play Games Services library. To manage the complexity of the code, I wrote a class called...

 

Not long ago Don provided example Provider Requester Activity based communication via Intents.

Although that Activity version had some hints in it for Service based version, it took several...

 

Here's a small example how to show/share file(s) from the internal storage (benefits: no permissions are needed)

What it does:

- creates a folder called "shared" (under File.DirInternal)
- this...

 

Hello,

Maybe this can be useful for others.
You can get the exact screen diagonal size (in inch) using the following simple routine.

Sub GetDevicePhysicalSize As Double
#If JAVA
import...

 

I save the SQLite DB used by my apps in the directory corresponding to File.DirInternal, which is the app's exclusive space.

This, however, prevents you from accessing the DB from outside...

 

the huawei map kit will hopefully be integrated into the B4A soon..

i have opened a topic here, and huawei teams will provide support...

 

B4XCollections v1.13 includes a new sorting feature named B4XComparatorSort.
This feature allows sorting using a custom comparator class.
The comparator class is a class that you create and it...

 

Please test scanning of your NFC enabled credit card using the APK in the download link below. Please ensure that you have enabled NFC on your cell/device before you do a scan - the...

 

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...

 

Sample 1

A wrap for this Github project. Posting:
1. B4A sample project
2. Java Code - check the code inside the wrapper vs the Java sample code.
3. B4A lib files

A nice...

 

Hello team,

If you recieved an email about submiting Data Safety form at Google Play Console and your apps using Admob, you can watch this video to guide you.

More infos you can find...

 

Sometimes it is really annoying to have keys we use so often to be lying in most inaccessible parts of keyboard.
And to make the matter worse they might also involve combination of shift etc...

 

Attached sample project is a wrap for this Github Project.

Attached are the following:

1. NeheLesson09.zip - it contains the library files (Jar and XML). Copy the Jar and XML to your...

 

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...

 

Hi,

I share with you my method to create a library for B4X, based on corwin42's post (Create a wrapper library with Android Studio).
Feel free to improve it and share your modifications...

 

Yesterday I have found out something searching in Google and checking it, it seems that it worked for me (until ipv4 is deprecated). So this is by 50% a tutorial and by 50% a request for other...

 

This is a short Example of what is possible with this 2 views.

I spend a lot of time in creating views, like this and to create a high quality view cost a lot of time. If you want to...

 

This is only an update to the original example from Erel.
I'm starting to create cross-platform apps using B4XPages.
It is mainly to B4A and B4J, because I don't use B4i, and I tried to put...

 

How to Draw S-Curved Arrows Between Boxes / Rectangles

When I was building the spatial “tool for thought”, Jade, one frequently requested feature was drawing arrows between blocks, so we could make mind maps, flowcharts, etc. Here’s how I made it.

dragonman225.js.org

(Usually I think I tend to post things like this in Chit Chat, but that's not searchable from the forum search engine so I suppose it's better...

 

Recently for a web project I was forced to seek a solution in the use of Regex. I have found this site which teaches you and allows you to check the use of regex for matching strings etc. I...