Parsing XML Feed with Objective-C: A Case Study on Stock Values

Understanding How to Limit Scrolling in a UITableViewController Using Cocoa Programming

Opening an HTML Page in a Native iOS Application: A Step-by-Step Guide

Unlocking the Power of UILocalNotifications on iOS: A Comprehensive Guide

Understanding Objective-C Function Wrapping: A Guide to Method Implementations That Resemble C Functions

There is no specific "best answer" for this problem, as it appears to be a collection of error messages related to crashes when trying to change video formats in an iOS app. However, I can provide some general guidance on how to approach troubleshooting and resolving similar issues.

Understanding the iPhone Address Book API: How to Check for Group Existence

Creating PDF Thumbnails like in iBooks on iPad or iPhone: A Guide to Optimized Rendering with Quartz 2D and CALayer Tiles

Understanding Team Agents and Ad Hoc Builds in iOS Development: Separating Fact from Fiction

Understanding NSFetchedResultsController and its Delegate: Unlocking the Power of Efficient Data Management in Your Objective-C App