b4j

  1. E

    B4J Question TreeView structure from Database

    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...
  2. S

    B4J Library PDF Creator and viewer

    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...
  3. R

    Android Question xGraph - Treatment of NaN's

    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...
  4. A

    B4J Question b4j 8.3 error

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

    B4J Library PDF Viewer with PDFBox

    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...
  6. S

    Share My Creation Find used libraries (B4A, B4J,B4In B4R)

    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...
  7. moster67

    B4J Code Snippet [B4X] Canvas - ensure free mouse drawing without gaps (smooth continuous drawing)

    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...
  8. avalle

    B4J Question How to implement TLS client authentication in B4J server?

    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...
  9. Peter Simpson

    B4J Tutorial 💡 CID (Caller ID) - View incoming call details using your COM port modem

    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...
  10. Peter Simpson

    🤗 My happy introduction to B4X

    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...
  11. Peter Simpson

    Android Tutorial 💡 A simple XUI app transfer from B4A to B4J in under 11 minutes

    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...
  12. stevel05

    Share My Creation [B4J] Hex View CustomView

    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...
  13. oldeast

    B4J Question Archiver

    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
  14. N

    B4J Question ABMaterial prevent page refresh/reload?

    Is it possible to prevent user to use refresh/reload page?
  15. Fr Simon Rundell

    B4J Question XUI: Enabled/Visible on B4XFloatTextField

    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...
  16. A

    Spanish B4J PUSH

    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...
  17. M

    B4J Question client screen size

    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?
  18. M

    B4J Question Smart String Literal

    I run into a trouble with Smart String Literals and $Datetime The long number 1546127715000 is converted to 2019.12.30 07:55:15 But the long number 1572393316601 is converted to 2019.10.30 07:55:16 The first number is less than the second and results in a date in the future Why and where is my...
  19. Xfood

    Italian B4j Report

    Buongiorno a tutti, vorrei realizzare un report in b4j ma non riesco a trovare un metodo semplice da gestire in pratica ho una tabella sql con questi campi codice,Descrizione,prezzo,ean vorrei generare un report con una pagina in formato a4 dove sia divisa in 2 colonne e quindi stampare per ogni...
  20. N

    B4J Question [B4J] How to take the right Tableview Selected Cell value

    Hi All, I'm using a simple Tableview and I need to take the selected cell value. I used this code and it works perfect: Sub Process_Globals Private fx As JFX Private MainForm As Form Private TableView1 As TableView Private Label1 As Label End Sub Sub AppStart (Form1 As Form...
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