Explain the difference between viewdidload and viewdidappear?

429

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Explain xctest test case code.

450

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What is a retain cycle?

444

---

What is memory management handled on ios?

441

---

Explain the difference between bounds and frame?

414

---

How you will store user info (username, password or token) securely in ios?

441

---

What is wildcard app ids?

499

---

From which ios version, arc is supported?

436

---

What are advantages of arc over mrc?

499

---

Explain application sandboxing.

449

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Have you uploaded app on appstore? What is the process?

401

---

What is difference between unit tests and ui test in xcode?

411

---

Why do we override drawrect: method? How to explicitly call it?

399

---

Explain difference between mrc and arc?

482

---

What are layers?

479

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