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Editorial Team
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Asked: 2026-06-17T22:55:05+00:00

I want to pass a user defined data type(a complex data type- an object

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I want to pass a user defined data type(a complex data type- an object say) to asmx web service from my android app. I have tried of sending primitive data

types and works fine. When I am trying to send the object it self as it is then I got the following error. (See link below)

http://pastie.org/5935960

and here is the code I am using to call the web service http://pastie.org/5936733

and this is my class Implementation http://pastie.org/5936414 and

another class implementation is here http://pastie.org/5936586.

Note: Every thing works fine when I send the data with primitive data types but when I send the data with my class object it is throwing an exception.

Please any onc could try to tell me what may be the problem. I was on this problem for last 4 days but could not resolve it still.

Thanks
Ganesh

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1 Answer

  1. Editorial Team

    You need a way to serialize/write your data so that it can be parsed and converted back to objects on the receiving side (asmx web service).

    Popular approaches are to use JSON/XML for text based solutions i.e. human readable. There are also solutions for serializing the data to binary. I only have experience with Google protocol buffers, which worked quite well for me.

    For the JSON approach you basically have a read and write method in each class you wish to transfer. These methods are used to convert your object to and from your desired format (JSON/XML).

    Hope that helps.

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