i can print on receipt/pos printer wifi with this code:
if run app in "Debug" mode, it is OK!
but in "Release" there is a follow log error:
a little help
B4X:
socket1.Initialize("socket1")
socket1.Connect(ipPrinter, portPrinter, 9000)
'
'
'
Sub socket1_Connected (Successful As Boolean)
If Successful Then
'
'
Dim OutputStream1 As OutputStream
OutputStream1 = socket1.OutputStream
'
Dim dataToSend as string = "Hello World!"
OutputStream1.WriteBytes(dataToSend.GetBytes("UTF8"), 0, dataToSend.Length)
'
Sleep (500)
OutputStream1.Close
socket1.Close
End If
but in "Release" there is a follow log error:
B4X:
*** Service (starter) Create ***
** Service (starter) Start **
** Activity (main) Create (first time) **
Call B4XPages.GetManager.LogEvents = True to enable logging B4XPages events.
** Activity (main) Resume **
stampa$ResumableSub_socket1_Connectedresume (java line: 262)
android.os.NetworkOnMainThreadException
at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1667)
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:115)
at java.net.SocketOutputStream.write(SocketOutputStream.java:156)
at anywheresoftware.b4a.objects.streams.File$OutputStreamWrapper.WriteBytes(File.java:534)
at giannimaione.pointofsales.stampa$ResumableSub_socket1_Connected.resume(stampa.java:262)
at giannimaione.pointofsales.stampa._socket1_connected(stampa.java:170)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:221)
at anywheresoftware.b4a.BA$2.run(BA.java:395)
at android.os.Handler.handleCallback(Handler.java:942)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loopOnce(Looper.java:226)
at android.os.Looper.loop(Looper.java:313)
at android.app.ActivityThread.main(ActivityThread.java:8762)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:604)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1067)