iphone, how to implement 'upgrde app ' with outh through AppStore?
<p>I want 'upgrade feature' in my iPhone app, how to say, if user tap a 'upgrade' button, then the app will access online upgrade version server and download newest modules file, after that, the app can use the newest modules... </p>

<p>I am not sure that whether cocoa can like C++ to call 'Load DLL', but I assume that should have some way can do the similar feature...</p>

<p>any one can give tips ? </p>

<p>Thanks a lots for your time .</p>

<p>Regards</p>
