Are you ready to learn one of the exciting technologies of our generation? Then here you go. Do you know that IOS operating system is used to run all the Apple application devices? It may be anything like the iPhone, IPad, Mac notebooks, and laptops. Apple is one of the biggest software giants, this has a huge customer base. Becoming an IOS developer is nothing greater than learning any other technologies. If you are looking for the top IOS development interview questions and answers, we have come up with a frequently designed IOS development interview questions and answers article. This article will help you to crack any complex interview questions and get into top companies. Let’s start to begin learning.
Ans: Below are a few important characteristics of IOS:
Ans: The below table will explain the major differences between IOS and Windows
UIkit framework: this type of framework is mainly used to develop user interfaces. The following are the few features of using the UIKIT framework;
UIkit. The framework offers the complex infrastructures required to construct and manage IOS application devices.
Ans: There are 4 methods used to respond to state transitions such as;
Ans: You can see the following features added in IOS 9:
Ans: ASSIGN is used to create references from one object to another, the below program will explain this;
If (_variable ! = object)
_variable = nil;
_variable = object;
RETAIN used to create the differences between one object and another;
If (_variable! = object)
Variable = nil;
_variable = [object retain];
Ans: Below are the three ways to achieve concurrency;
Ans: The different application states of IOS included are;
Not running state: this state is used when the app has not been launched yet, or that was terminated by the system.
Inactive: this state is used when the application is running in the foreground and not receiving any events.
Active state: when applications are running in the foreground and receiving events by that time this state is used.
Background state: this state is used to run the application in the background and execute the codes.
Suspended state: this state is used to terminate the program.
Ans: A UIKIT class uses the application thread from the application’s main thread.
Ans: Below are the two ways which explain this;
Ans: The layer objects are nothing but data objects which represent the visual features, views and render the contents. These layers are custom layers that are added to the interfaces to execute any complex animations.
Ans: A SWIFT is one of the programming languages used in the development of IOS applications. SWIFT language adopts safe programming patterns and offers many modern features to make programming easier to implement, flexible, and more fun to write.