It looks ok in log file but error occurs in Printer.Write(PrintBuffer) . please help me.
this code was working fine in 2017
[CODE lang="b4x" title="Printer"]
Sub PrintReceipt
startprinter
Printer.IsInitialized
' BtAdmin.Initialize("BlueTooth")
' BTConnection.Initialize("Printer")
'Printer.Initialize(BTConnection.OutputStream)
' Printer.Initialize2(BTConnection.OutputStream,"windows-1252") 'important to print f.e. German/French chars 'Here's the problem
' Dim printerA As AsyncStreams
' printerA.InitializePrefix(BTConnection.InputStream,False,BTConnection.OutputStream,"PrinterA")
'Printer.Initialize2(BTConnection.InputStream,BTConnection.OutputStream)
TxtCompany.Text="Amarnath"
' Construct the content for printing
PrintBuffer = ""
PrintBuffer = PrintBuffer & Chr(27) & Chr(33) & Chr(0) ' Reset settings
PrintBuffer = PrintBuffer & " Amarnath " & CRLF
PrintBuffer = PrintBuffer & " Receipt" & CRLF
PrintBuffer = PrintBuffer & "-----------------------------" & CRLF
PrintBuffer = PrintBuffer & "Date: " & DateTime.Date(DateTime.Now) & " Time: " & DateTime.Time(DateTime.Now) & CRLF
PrintBuffer = PrintBuffer & "-----------------------------" & CRLF
' Print dynamic content
PrintBuffer = PrintBuffer & "Company: " & TxtCompany.Text & CRLF
PrintBuffer = PrintBuffer & "FAT: " & NumberFormat(TxtFAT.Text, 1, 1) & CRLF
PrintBuffer = PrintBuffer & "Amount: " & NumberFormat(TxtAmount.Text, 1, 2) & CRLF
PrintBuffer = PrintBuffer & "-----------------------------" & CRLF
PrintBuffer = PrintBuffer & " Thank you, visit again!" & CRLF
PrintBuffer = PrintBuffer & Chr(27) & "d" & Chr(5) ' Feed and cut
Log(PrintBuffer)
' Write the buffer to printer and close connection
Printer.Write(PrintBuffer) ' Here's the problem
' Printer.Flush
xui.MsgboxAsync("Printed!", "")
End Sub
[/CODE]
[CODE lang="b4x" title="Error Log"]
MPT-II -> 66:32:0E:71:7F:08
BlueTooth Printer -> DC:0D:30:C3:C6:FB
MPT-II -> 66:32:0E:71:7F:08
BlueTooth Printer -> DC:0D:30:C3:C6:FB
!�� Amarnath
Receipt
-----------------------------
Date: 03-11-2024 Time: 21:45:22
-----------------------------
Company: Amarnath
FAT: 2
Amount: 3
-----------------------------
Thank you, visit again!
Error occurred on line: 2294 (milkpurchaselocal)
java.lang.RuntimeException: Object should first be initialized (TextWriter).
at anywheresoftware.b4a.AbsObjectWrapper.getObject(AbsObjectWrapper.java:67)
at anywheresoftware.b4a.objects.streams.File$TextWriterWrapper.Write(File.java:568)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.shell.Shell.runVoidMethod(Shell.java:777)
at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:354)
at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:255)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:157)
at anywheresoftware.b4a.debug.Debug.delegate(Debug.java:262)
at b4a.example.milkpurchaselocal._printreceipt(milkpurchaselocal.java:897)
at b4a.example.milkpurchaselocal._brnprint_click(milkpurchaselocal.java:808)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:732)
at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:351)
at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:255)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:157)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:201)
at anywheresoftware.b4a.objects.ViewWrapper$1.onClick(ViewWrapper.java:80)
at android.view.View.performClick(View.java:7570)
at android.view.View.performClickInternal(View.java:7540)
at android.view.View.-$$Nest$mperformClickInternal(Unknown Source:0)
at android.view.View$PerformClick.run(View.java:29721)
at android.os.Handler.handleCallback(Handler.java:942)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loopOnce(Looper.java:240)
at android.os.Looper.loop(Looper.java:351)
at android.app.ActivityThread.main(ActivityThread.java:8423)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:584)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1013)
[/CODE]
