Android Question How To StartService another app and receive result

[Willian Padilha]

Hi, i have this code and works fine.

Dim s_template As String
    s_template = $"\u0010CT~~CD,~CC^~CT~${CRLF}
                ^XA~TA000~JSN^LT0^MNW^MTD^PON^PMN^LH0,0^JMA^PR4,4~SD10^JUS^LRN^CI0^XZ${CRLF}
                 ^XA${CRLF}
                 ^MMT${CRLF}
                 ^PW591${CRLF}
                 ^LL0203${CRLF}
                 ^LS0${CRLF}
                 ^FT171,82^A0N,27,26^FH\\^FD%PRODUCT_NAME%^FS${CRLF}
                 ^FT222,107^A0N,17,16^FH\\^FD%MSRP%^FS${CRLF}
                 ^FT424,163^A0N,23,24^FB82,1,0,R^FH\\^FD%PCT%^FS${CRLF}
                 ^FT314,167^A0N,28,28^FH\\^FD%FINAL%^FS${CRLF}
                 ^FT367,107^A0N,17,16^FH\\^FD%UPC_CODE%^FS${CRLF}
                 ^FT471,138^A0N,14,14^FH\\^FDYou saved:^FS${CRLF}
                 ^FO451,119^GB103,54,2^FS${CRLF}
                 ^FT171,20^A0N,17,16^FH\\^FDPrintConnect Template Print Example^FS${CRLF}
                 ^FT171,167^A0N,28,28^FH\\^FDFinal Price:^FS${CRLF}
                 ^FT171,51^A0N,17,16^FH\\^FDProduct:^FS${CRLF}
                 ^FT171,107^A0N,17,16^FH\\^FDMSRP:^FS${CRLF}
                 ^FT508,163^A0N,23,24^FH\\^FD%^FS${CRLF}
                 ^FT328,107^A0N,17,16^FH\\^FDUPC:^FS${CRLF}
                 ^FO171,119^GB259,0,2^FS${CRLF}
                 ^PQ1,0,1,Y^XZ${CRLF}"$
    Dim bytesArray() As Byte
    Dim m_map_args As Map
    m_map_args.Initialize
    bytesArray = s_template.GetBytes("UTF8")
    m_map_args.put("%PRODUCT_NAME%", "Apples")
    m_map_args.put("%MSRP%", "$1.00")
    m_map_args.put("%PCT%", "50")
    m_map_args.put("%FINAL%", "$0.50")
    m_map_args.put("%UPC_CODE%", "12345678")
   
    Dim intentPrint As Intent  
    intentPrint.Initialize("","")
    intentPrint.SetComponent("com.zebra.printconnect/.print.TemplatePrintWithContentService")
    intentPrint.PutExtra("com.zebra.printconnect.PrintService.TEMPLATE_DATA",bytesArray)
    intentPrint.PutExtra("com.zebra.printconnect.PrintService.VARIABLE_DATA",m_map_args)
    StartService(intentPrint)

But in the Guide of the another APP (Zebra PrintConnect), return status of process with buildIPCSafeReceiver.
How to write this code in B4A (buildIPCSafeReceiver) ?

I need the return to notify the user in case of an error


Link of User Guide Zebra PrintConnect (page 88 - Intents)

https://www.zebra.com/content/dam/zebra_new_ia/en-us/solutions-verticals/product/Software/Printer%20Software/Link-OS/print-connect/PC-UserGuide-P1082444-001.pdf

Button templatePrint = (Button) findViewById(R.id.templatePrint);
templatePrint.setOnClickListener(new View.OnClickListener() {
[USER=69643]@override[/USER]
public void onClick(View v) {
// Define a hash map of variable data
// Strings used for keys will be replaced by their corresponding values in your template file's ZPL
HashMap<String, String> variableData = new HashMap<>();
variableData.put("%PRODUCT_NAME%", "Apples");
variableData.put("%MSRP%", "$1.00");
variableData.put("%PCT%", "50");
variableData.put("%FINAL%", "$0.50");
variableData.put("%UPC_CODE%", "12345678");
Intent intent = new Intent();
intent.setComponent(new ComponentName("com.zebra.printconnect","com.zebra.printconnect.print.TemplatePrintService"));
intent.putExtra("com.zebra.printconnect.PrintService.TEMPLATE_FILE_NAME", "PriceTagTemplate.zpl");
intent.putExtra("com.zebra.printconnect.PrintService.VARIABLE_DATA", variableData);
intent.putExtra("com.zebra.printconnect.PrintService.RESULT_RECEIVER", buildIPCSafeReceiver(new ResultReceiver(null) {
[USER=69643]@override[/USER]
protected void onReceiveResult(int resultCode, Bundle resultData) {
if (resultCode == 0) { // Result code 0 indicates success
// Handle successful print
} else {
// Handle unsuccessful print
// Error message (null on successful print)
String errorMessage = resultData.getString("com.zebra.printconnect.PrintService.ERROR_MESSAGE");
}
}
}));
startService(intent);
}
});

This is a method buildIPCSafeReceiver

// This method makes your ResultReceiver safe for inter-process communication
private ResultReceiver buildIPCSafeReceiver(ResultReceiver actualReceiver) {
 Parcel parcel = Parcel.obtain();
 actualReceiver.writeToParcel(parcel, 0);
 parcel.setDataPosition(0);
 ResultReceiver receiverForSending = ResultReceiver.CREATOR.createFromParcel(parcel);
 parcel.recycle();
 return receiverForSending;
}

PS: StartActivity doesn't work for this situation.

best regards

 

[Erel]

With a bit of Java knowledge, you can implement it with inline java.

 

[Willian Padilha]

With a bit of Java knowledge, you can implement it with inline java.

Would you be so kind as to show an example @Erel?

 

[Mark Stuart]

Hi William

I'm assuming this is Zebra printing you are working on?
By the link it seems as that is the case.
I'm wanting to do the same thing.
Any hints or code examples or a sample project would be very much appreciated.

Regards,
Mark Stuart