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iOS iPhone xCode Interview Questions – I

6 March 2013 15,044 Views No Comment

** We will be updating answers in a bit. Bookmark this page.

- How to create custom view?

- Use of IBOutlet and IBAction

- Can 2 tableviews be used in one Viewcontroller? How?

- Can a tableview refer to 2 datasources? How?

- What is the difference between shallow copy and deep copy?

- What are categories? How are these different from extending classes?

- How does push notifications work?

- Mutable Vs Immutable types? ( For example: Array Vs MutableArray )

- What does the keyword atomic signify?

- What does @synthesize do?

- Difference between NSNotification and delegate. When to use them?

- Pros and cons of using 1. Sqllite 2. Plist 3. Xml 4. Core Data

- Difference between view’s bounds and frame.

- What is retainCount?

- What will happen if you create an object, add it to a mutable array and release the object right after that?

- Memory management. Autorelease / release / retain / ARC

- What is adhoc build. How to create and deploy one?

- What is code signing?

- What are the different app states?

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