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PO
 

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    <p>First of all, do you know you can ONLY call the methods of the UIView class (and it's subclasses) in the main thread? But, if you are just doing <strong>create</strong> and <strong>release</strong> job in second thread, it's OK to do it.</p> <blockquote> <p><strong>Threading Considerations</strong></p> <p>Manipulations to your application’s user interface <strong>must</strong> occur on the main thread. Thus, you should always call the methods of the UIView class from code running in the main thread of your application. The only time this may not be strictly necessary is when creating the view object itself; but all other manipulations should occur on the main thread.</p> </blockquote> <p>In addition, you can use <code>@synchronized() {object}</code> to lock an object. But still, you can NOT call UIView's methods in second thread (in Objective-C even set property is calling method) even you've locked it.</p> <blockquote> <p>Objective-C supports multithreading in applications. Therefore, two threads can try to modify the same object at the same time, a situation that can cause serious problems in a program. To protect sections of code from being executed by more than one thread at a time, Objective-C provides the @synchronized() directive.</p> <p>The @synchronized()directive locks a section of code for use by a single thread. Other threads are blocked until the thread exits the protected code—that is, when execution continues past the last statement in the @synchronized() block.</p> <p>The @synchronized() directive takes as its only argument any Objective-C object, including self.</p> </blockquote>
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    1. POEasy and fast way to access UIView from different threads
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    1. COI was expecting something more than excerpt from documentation but probably was expecting too much. Anyway, this is most complete answer so I mark it as "the answer".
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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