Tutorials & Examples

You can play around with this. Posting the following:

B4A project (BitmapMeshView.zip)
Java Code (src.zip)

Amend the Java code to your liking.
Click on the blank screen once the project has...

 

I hope this is the right sub topic to post this under. Didn't think it fitted anywhere else.
(Erel, is there a place for a General sub topic??)

I have recently written a blog post on my...

 

Hi,

On one of my projects, I had to transfer sensitive data from Android to PC but - with RC4 encription.
I wrote a little code that I want to share with you...
Maybe Android supports RC4...

 

It may happen sometimes that, if your dealing with complex non-integer calculations, your code may not perform exactly the way you want to. I came across this problem when I was trying so create a...

 

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...

 

Here is a method using FTP to create a trial period for your app. Since there is no local file with trial information, the user cannot defeat it by manipulating stored data. Also, FTP calls are...

 

B4A works fine in Parallels windows on M1 MAC.
Here are compilation times for same, fairly large project:
Could Erel comment on significant differences in time execution of various parts.
In...

 

I'm currently developing an App that'll be released for Android and IOS. It presents "files" to the user, allows them to select a file and then presents the content for editing, and finally allows...

 

Here's a little sample skeleton for using classes vs activities and making your app more compatible with b4i )

It's more flexible (i.e. create multiple "pages" of the same form, a good example...

 

On your form you use an EditText to input time. If you want to calculate with this, may be the following example will help:

Sub AddTime(OriginalTime As EditText,HoursToAdd As Int,MinutesToAdd...

 

Probably not the most elegant way to do this calendar but it is working. It displays 42 days and will "grey out" the days of the previous/next month within the calendar month being displayed. The...

 

Hi all.
I found this example in some old folders on my pc and decided to share here.
it is a simple Fidget Spinner example on B4A

Download Here

Ps: on the zip...

 

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...

 

I needed to parse markdown code as HTML, and since you guys have given me so much code I felt obligated to share it...

 

This example allows playing a midi file to an external USB device which you can select. It also allows delaying the messages send to the usb device so you can hear them at the same time as the...

 

If you receive an email from google announcing the new 15% service fee (instead of 30%) that looks like this:

I was a little confused of why do I have to create a group if I only...

 

Sliders are a very useful and common control but are not part of the core B4A product. In this lesson we are going to build a slider control like the one shown in the screenshot.

To build a...

 

Hi,

I'm a new user to the forum and I must say, the software is truly impressive. Just as an introduction, I live in Cape Town, South Africa and I am a "Mad Scientist"

I have written an app...

 

Please see:

GPS tutorial
Toggle Library
Toggle on/off GPS in any Android version
Set phone clock from GPS

Advantages:
- System date and time are updated periodically.
-...

 

Full list of B4J Server Examples:

https://b4x.com:51041

If there are other online tools that simplify programming with B4X...