iPhone Programming Tutorial – Intro to SOAP Web Services

I have created some wrapper classes and an objective C .NET dataset object class to easily incorporate passing datasets to your iphone app check it out!

http://grabalife.com/2009/10/19/using-net-web-services-and-dataset-objects-in-your-iphone-app/

I’ve tried to put this example in a class to do a login via web service. I get my user id and password from the NSUserDefaults. I build the SOAP envelope and get my validated userId back in the web service…that works!!!

In the parser didEndElement method I have the value I want (userId) in soapResults and am setting it like this:

myUserId = [[NSString alloc] initWithString:soapResults];

I have this as a property in the class .h file as:

@property(nonatomic, retain) NSString *myUserId;

I’d like to be able access that value by my view controller class that creates the instance to use the web service as:

LoginWebService *loginWebService = [[LoginWebService alloc] init];

[loginWebService logUserIn];

Right now it returns void and I try to get the value from the myUserId property. This does not work.

I also tried returning a string from the logUserIn method where the SOAP message is defined…again no luck.

I apologize if I’m missing something obvious…I’m coming from the .Net world and trying to pick this stuff up.

Please provide some help or an example of wrapping your code into a class that can return a value as a result of the web service having been contacted, parsed and return a string to the instantiating class (in my case a userId). Any help would be appreciated, my head is a bloody stump from beating it against my Mac Book.

Thanks in advance.

Hi John, Please could you provide the code, so access to access a login web service.
I am having a login web service, but still i did not get how to pass paramters like username and password to the web service.and also how to capture the results in the application.
Please help.. I am very new to iphone application development.

Nice tutorial. Thanks.

John,

Maybe I’m misreading your post, but I don’t see where you are making the value of “myUserID” externally visible. What does your “logUserIn” method look like? Are you synthesizing the getter/setter for “myUserID?”

Excellent blog, i like it. I should just give up and take lessons from you

Gr8 Tutorial
Thanks alot…

Can i expect any clue or tutorial to connect database related Webservice which returns Datatable/Dataset.

Thanks in Advance…

good tutorial…thanks!

Thank you for the great tutorial. I have one question though. In the example given you pass a string value ‘nameInput.Text’ to the NSString. However, how would one go about adding a boolean value to the NSString? I need to tell the Web Service whether I want the result back compressed or not. And I would like to set it to false.

I lately came across your blog and have been reading along. I thought I would leave my first remark. I don’t know what to say except that I have loved reading. Respectable blog. I will keep visiting this blog very often.

Just wanted to thank you for this amazing video, it’s just suddenly made everything crystal clear! Thank you so much for sharing your knowledge.

OK im using this parser to grab my data from the net but how would i go about implementing a thread to call these functions, ive created a thread but after i call the first portion of the code and it creates the soap message it never goes past this function, How should i go about this cause i need to run my parsing in the background instead of on the main thread.

I need a project realy run online sour its rource code! thanks

Hey, This is a great tutorial.. Thanks so much. I was wondering if your webservice site for this tutorial is working or because i don’t the result when i run the application.

Hi,

Its really interesting information you have posted here I clear few doubts from this information thanks for sharing here

Thanks

Hi,

this was exactly what we needed for our iPad app.

Thanks a lot.