Explain the difference between viewdidload and viewdidappear?

412

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Explain xctest test case code.

429

---

What is a retain cycle?

429

---

What is memory management handled on ios?

424

---

Explain the difference between bounds and frame?

400

---

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

425

---

What is wildcard app ids?

483

---

From which ios version, arc is supported?

421

---

What are advantages of arc over mrc?

482

---

Explain application sandboxing.

437

---

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

387

---

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

401

---

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

384

---

Explain difference between mrc and arc?

466

---

What are layers?

463

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