Unexpected "register: true" when creating pass

[drallgood]

Reported by hnthuan:

There is one problem with Barcode when create file pkpass.
When I call function setMessageEncoding( Charset.forName( "utf-8" ) ),I receive a string {"register":"true"} in file pass.json, so PassBook can't read file pkpass.
I fix this by edit your code, reply Charset by String, rebuild project and create new pkpass file that PassBook read successfully.
I'm not sure the message will be encode to UTF-8, so I hope you can check this bug for everyone can use your code more easy.

[hnthuan]

When I use your code:

barcode.setFormat( PKBarcodeFormat.PKBarcodeFormatQR );
barcode.setMessage( "ABCDEFG" );
barcode.setMessageEncoding( Charset.forName( "utf-8" ) );

In pass.json file,I get the string:

..., "barcode":{"format":"PKBarcodeFormatQR","message":"ABCDEFG","messageEncoding":{"registered":true}}, ...

PassBook can't read pkpass file created with this string.

After update code, I'm using:

//barcode
barcode.setFormat( PKBarcodeFormat.PKBarcodeFormatQR );
barcode.setMessage( "ABCDEFG" );
barcode.setMessageEncoding( "UTF-8" );

And in pass.json file, I get the string:

...,"barcode":{"format":"PKBarcodeFormatQR","message":"ABCDEFG","messageEncoding":"UTF-8"},...

PassBook load pkpass file and read successful.

Is this help?

[drallgood]

Hmm... Strange. This exact code is working fine when I execute it.
Which exact version of jPasskit are you using?

Changing it from java.nio.charset.Charset to a string is not an option as I want to use as many common java classes as possible.

[drallgood]

Looks like Jackson isn't serializing the Charset class correctly.
I've tried to fix it by filtering all fields except the name attribute.