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POMonoTouch conformsToProtocol=False for valid protocols
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  1. POMonoTouch conformsToProtocol=False for valid protocols
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    copied!<p>I have created <a href="https://github.com/theonlylawislove/MonoTouch.AQGridView/blob/master/MonoTouch.AQGridView/ApiDefinition.cs" rel="nofollow">bindings for AQGridView</a>. The project has a delegate and datasource protocol.</p> <p>The type <code>AQGridView</code> exposes a <code>GridViewDataSource</code> and <code>GridViewDelegate</code> property. When setting either property with a custom class, an error get's throw from the bounded library (not the runtime). There is message is:</p> <blockquote> <p>Argument to -setDataSource must conform to the AQGridViewDataSource protocol</p> </blockquote> <p>This error is thrown manually by calling "conformsToProtocol" within the objective-c library.</p> <pre><code>- (void) setDataSource: (id&lt;AQGridViewDataSource&gt;) obj { if ((obj != nil) &amp;&amp; ([obj conformsToProtocol: @protocol(AQGridViewDataSource)] == NO )) [NSException raise: NSInvalidArgumentException format: @"Argument to -setDataSource must conform to the AQGridViewDataSource protocol"]; _dataSource = obj; _flags.dataSourceGridCellSize = [obj respondsToSelector: @selector(portraitGridCellSizeForGridView:)]; } </code></pre> <p>The delegate has no required methods, so it is easy to "conform", and for the datasource, I have implemented all the required fields. So the question is:</p> <p><strong>Why does <code>conformsToProtocol</code> return NO in iOS when the managed type I send it inherits from the correct type and implements the required methods (if any)?</strong></p> <p>UPDATE</p> <p>I have overrided ConformsToProtocol on our c# type to get the method in the iOS type to pass.</p> <pre><code>public override bool ConformsToProtocol (IntPtr protocol) { return true; } </code></pre> <p>I still don't think I need to do this, but it now works.</p>
 

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