Android Question Print document finish

santiago · Jul 30, 2024

I use this code to print a webview

code:

sub CreateWebPrintJob (wv As WebView)
    Dim jwv As JavaObject = wv
    Dim jprintmanager As JavaObject = jwv.RunMethodJO("getContext", Null).RunMethod("getSystemService", Array As Object("print"))
  
    Dim jPrintAdapter As JavaObject = jwv .RunMethod("createPrintDocumentAdapter", Null)
    Dim jobName As String = "Document"
    'jPrintManager.RunMethod("print", Array As Object(jobName, jPrintAdapter, Null))
    [B]jprintmanager.RunMethod("print", Array As Object(jobName, jPrintAdapter, CreatePrinterAttributes))[/B]
    
End Sub

It worked fine. It shows the print preview

But at least I need an event for job finsh to clear the view after the printer finish and maybe a job cancel too
And I am not able to find out how to add that event .I read the Android printer docs ,fount printjob but not able to add the event
Sorry for my English and thanks for your time and help

Erel · Jul 31, 2024

As far as I remember there is no such event. You can handle Activity_Resume / B4XPage_Foreground.

santiago · Jul 31, 2024

Erel , thanks too much.
The simplest, the best. I used activity/resume as you told and working well.
Have a good day

On the other hand, is it not possible to add a JavaObject for job print to evaluate the result for jPrintManager or jPrintAdapter ? or a code to define the printJob like the CreatePrintAtributes function you showed to set paper size ?

Thanks in advance and thanks for your time

drgottjr · Jul 31, 2024

you can monitor the print job status (cancelled, finished, etc) and raise an event.
check the documentation for android.print.PrintJob class

santiago · Aug 30, 2024

drgottjr said:
you can monitor the print job status (cancelled, finished, etc) and raise an event.
check the documentation for android.print.PrintJob class

Thanks.
The problem its I found the anndroid printjob call but I am not able to implement it or deploy to access to job status. Do you can help with that issue? I use the code I show at the begining of this threat
Thanks in advance

drgottjr · Aug 30, 2024

printmanager has an addPrintJobStateChangeListener() method. it signals when print job status changes. you can raise an event in b4a when such change occurs. the system identifies the job and the change (complete, cancelled, etc). i would use inline java:

B4X:

printManager.addPrintJobStateChangeListener(new PrintManager.PrintJobStateChangeListener() {
    @Override
    public void onPrintJobStateChanged(PrintJob printJob) {
        if (printJob.isCompleted()) {
            // raise your event
        } else if (printJob.isFailed()) {
            // raise event if desired
        } else if (printJob.isCancelled()) {
            // raise event if you want
        } else if (printJob.isBlocked()) {
            // raise event if interested
        }
    }
});

erel would use javaobject the way you currently do, but the trick is the listener. i've seen him use a polling timing loop to mimic one. if you look at his barcodescanner class for mlkit, you can see how he does it. in that case, he only has to deal with 1 result; in this case you have 4 possible states. i'm not sure how to handle that, so i opted for inline java. it shouldn't interfere with what you have done so far with javaobject. once you issue the print command, the printmanager knows about the job. you can add a listener to the printmanager after calling print and handle the event you raise.

santiago · Aug 31, 2024

Sir,
Thanks too much . You are very kind
I will try and I will tell you if it worked

Android Question Print document finish

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