b4j

After building my project and release jar file, hackers can access to my source codes Is there any way to protect codes at least for chicken hackers? It is important to nobody can access to my sources Thanks

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...

Hello everyone. After spending some time to get a UI on my raspberry pi screen, here are my remarks, for who it can be useful: -Be careful when using only VNC to connect to your raspberry pi, when testing the javaFX lib, connect a screen on the HDMI port. (Yes there are libs that only show you...

Hi guys, i need help by creating a TreeView structure from MySQL Table. My database table has 3 columns: 1. id 2. name 3. parent_id Now on client side i load the data via httpjob and parse it into json. Dim job As HttpJob job.Initialize("",Me) job.Username=Main.api_user...

Hello, Here are 3 classes : - PdfCreator : create PDF - PDFViewer : render PDF - clsFormPDF : form to preview PDF (Page navigation, Zoom, Print, Save) PdfCreator and PDFViewer wraps PDFBox You have to download pdfbox-app-2.0.20.jar and copy it in the additional folder You have to download...

Hi All, I have lots of real time data I use xGraph to display, however I run into trouble with missing data segments. I don't wish to fill them with a linear interpolation or some other trick, but rather to pad the missing data points with NaN. At the moment xGraph treats the NaN's as...

hi i made small program which has accordion ,webview and i got this error when i make release the program dosent run please help

Hello, This is a class 'clsPDFViewer' which use PDFBOX to render a pdf file. Use the form clsPDFPreview to preview a PDF file. You can browse pages, zoom in and out, print and save the pdf. You can add custom button for others actions. Don't forget to add the jar file...

Hello, Sometimes you want to clean the additionnal folder, but are you sure a library is used or not in your projects ? This app lists all the libraries found in your projets. Select a folder, check project's type and you got it! In the left listview are the libraries found. In the right...

EDIT: see posts #2 and #4 for better solutions thanks to Erel. There might be better ways but I have used DrawRect() method of the Canvas in the past when I want to do free mouse/hand drawing on the screen. However, very often DrawRect() skips some points, i.e., leaves gaps if one tries to draw...

Normally, a TLS client verifies the server’s certificate. It’s also possible for the server to require a signed certificate from the client. These are called Client Certificates. This ensures that not only the client can trust the server, but that the server can also trusts the client. Is this...

Hello All, After looking on the forum and finding basically nothing regarding using B4J for CID (Caller ID) via home or basic business phone lines, I took out my V.92 USB modem and created this simple tutorial for B4J developers to learn from. NMBR=07931XXXXXX actually displayed my full mobile...

Hmm, I see that Anywhere Software has created this new section in the forum, so I've decided to add my actual B4X story. WARNING: This is going to be a loooooooooooong read :cool: I've always enjoyed creating software from the early days of the humble 48k ZX spekky, to machine coding my 68000...

Hello all, Here is a quick video to show how simple it can be to transfer your B4A projects to B4J when using XUI. It's been on my mind all days now, so I thought I would give it a go and also record my efforts. This is my first ever attempt at doing anything cross platform like this with XUI...

Here is my take on a Hex dump as a custom view. You can: Explore any size file Load one or more arrays of bytes Search the data There is a degree of customisation in the designer and subsequently in the class for setting colours used for different highlighting. Turning the headers on/off...

After installing the latest version of B4J, the Archiver library is missing and is needed in theB4J packager which has been Ok for a couple of years, I found iArchiver but i think I need jArchiver, can you help please Thanks

Is it possible to prevent user to use refresh/reload page?

I am loving the XUI Library, but some of the opportunities the new controls offer also come with (perhaps unforseen) limitations. Having a Password feature in a B4XFloatTextField is awesome, but I am surprised that I can no longer set this control as txtfield.Enabled=True so that I can lock it...

Hola! Estuve buscando por el foro y no encuentro en ningun lado la forma de recibir una notificacion via push en b4j. Lo que estoy buscando es enviar desde php la push para que reciba un b4j esta notificacion y a partir de ahí realice una acción. Encontre siempre que b4j haga de servidor que...

how to get the client screen size? I want to fit the content design based on their screen size. or is there another way to make the system design (layout) fit correctly to their screen size?