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Hello How can I end all current WhatsApp calls? I would like that if you click on a button, all calls should end immediately. So hang up! Thank you for your help edit1: I now have another plan. In case you can't end the call via API. Then my new solution would be. When button click, Whatsapp...

On the ESP32 Arduino forum someone asked the question about throughput from an APP to an ESp32. A set up an App using B4A that did nothing but send a stream of bytes from an byte array which I populated and then I send a single finish byte. The ESP printed out the start and stop time of the...

Hi, I would like to be able to upload large files (such as movies of a few GB's) from one PC to a server using a B4J app on both sides. What would be the best approach to do this ? I would guess through a network stream ? Any examples ? Thanks ادامه مطلب...

Why we can't just add a .java class to project? When we open the src folder to inspect the generated java code, it's clear that a .java class could easly interoperate with all other b4x, just like inlie java. It would a great plus for B4A For those that doesn't need to extend with Java, nothing...

I found a library written in object-c on GITHUB that is right for me. I was wondering if it was possible to include it in my project. In B4A (or B4j) I would use #AdditionalJar and call methods with JavaObject. Or I would write a few lines of code (if the library is not complex) and using...

Hello, Probably after purchasing B4A long back, I'm surprised to see that the product is free now ! Well, now I plan to develop one Invoicing system using B4A. Would like to have your expert opinions regarding 1. Where to start. Will go through documents to learn the basics. Would like to...

Hello all, I'm not sure if anybody remembers this, but about 3 years I was issued a challenge by one of my friends who is an Android app developer for a company, he challenged me to create an app against him and the loser would have to pay for snooker or a curry when we went out next, suffice to...

I would like to know what possible events would cause a user to have to reinstall the application. To understand the question I put 2 examples: if I change the name of the project. like when I find out that Firebase doesn't work if the name has capital letters. Another example is if the user...

New to Android programming and have searched the forum/web for an example without success. I would like to trigger Android cell phone to take a picture and email/text it using an externally generated pulse or switch closure. Motion detection won't work or I would just use a cellular trail...

Hi All, Hopefully this is in the right section - I'm working on a B4A app, that uses b4j server with jrdc2 connector to mysql server (this is all working fine) - I then have my friend work on php website, which he's connecting to the same mySQL server. I would like to get a login/register...

What is the best cross platform tabview, to show different views on a page / activity, you would prefer to use in a new app? I think, in many apps there is a need of showing different views. In older apps I used segmented control in B4i and TabHost in B4A , read now about TabHostExtras and...

What is the best practice in B4A when making multiple Activities / Panels (vb6 frames and panels) in a single Activity? IE: Where multiple tasks and data can be showed an manipulated in a vb6 form on a panel or frame. For example a form may have 4 frames one with data manipulation properties...

Has anyone written any B4J programs running in MicroService architecture where one B4J program (controller) can start a new B4J program (worker) that will run on a different CPU core and then the controller can pass messages to the second worker program and receive results back from in the form...