Explain the difference between viewdidload and viewdidappear?

783

---

Explain xctest test case code.

750

---

What is a retain cycle?

697

---

What is memory management handled on ios?

743

---

Explain the difference between bounds and frame?

789

---

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

760

---

What is wildcard app ids?

856

---

From which ios version, arc is supported?

764

---

What are advantages of arc over mrc?

791

---

Explain application sandboxing.

720

---

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

664

---

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

784

---

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

715

---

Explain difference between mrc and arc?

786

---

What are layers?

770

---