The Interface of iOS App Development

iOS is an operating system which powers all Apple's devices : iPhone, iPod Touch, and iPad. Know about iOS app development through this guide for beginners.

Table of Contents

In the world of electronic devices, Apple is the leading industry for years now. It holds a large portion of the mobile market and with every new launch, it just creates a fuss in the whole digital-electronics market.

Since it holds such a big share in the market; every client wants their app to work on iOS. Therefore, iOS app development is booming day by day.

As Apple is renowned so you might be thinking that there is some rocket science but no, iOS development is not at all hard.

And, this post will act as a comprehensive guide to all the process of developing the application for the iPhone.

We’ll be focusing on the phases, reasons, and tools for iOS app development, and finally, with an easy code tutorial, we will develop a basic iOS app using the Xcode.

Note: You will need a Macintosh Operating System (Mac OS) computer system for Xcode installation, application development, and app submission.

But first let’s us know about the basics such as iOS itself.

What is iOS?

iOS is an operating system which powers all devices developed by Apple. such as iPhone, iPod Touch, and iPad. So, if you are developing an iOS app then it would be compatible with all the devices running on iOS.

This makes the above feature even beneficial because it saves a lot of coding work.

Also, the same programming language is used for all of Apple’s computing devices apps. This clearly clarifies the fact that the developed app can later be integrated on to other iOS devices such as iPad and Mac.

The core programming language, Objective-C, powers all of their frameworks. Other than Objective-C, you can also develop an iOS app with the Cocoa Touch (UI framework used for developing iOS apps).

Let’s have a look on the phases of iOS app development.

Planning iOS App Structure

While creating an iPhone app you need to know the phases of iOS app development.

Planning is the first and foremost phase of any long run process. So here too, first of all, we have to plan what will be the motive of the app.

What is that reason that people will download your app? What features it should include?

Once you are through this process then, you are going to save yourself from a lot of hassles in the coding phase.

While you can think about the views like different pages in a website and each view offering different functionality e.g, a login form, a list of contacts, or a table of data.

So, here we are mentioning the different UI bar elements:

  • Status Bar – It displays the battery level of the device, bars of reception, 3G connection, phone carrier, and a lot more things.
  • Navigation Bar – It gives users the option to navigate between hierarchies of the pages, includes a button on the left side which enabling the user to return back to the previous page.
  • Toolbar – Generally, it appears at the bottom of the iOS app, holding a few icons offering some functions such as downloadsharedelete, etc.
  • Tab Bar – It is similar to the toolbar, the difference is only that you work with tabs. When a tab is clicked by the user it gets automatically be highlighted with glossy hover state. Instead of offering direct functionality, it switches between views.

Designing Photoshop Mockups

Photoshop is the premiere software for creating, logos website graphics, blog banners, and mobile mockups. Designing graphics for iPhone app is a bit complex process. But, here we are trying to simplify this Photoshop process.

  • Begin with Photoshop settings for iPhone; traditionally, the icons are marked with @2x at the end of the file’s name i.e “[email protected]“.
  • Optimize the new document settings; firstly edit some preferences; Photoshop > Edit > Preferences > Guides, Grid, and Slices.

  • Set the gridline every 20px with subdivisions at 2. If you are designing for retina display then, the 2px line will be displayed 1 point on the screen.

It is always easy to build designs with higher resolution then scale them down, though both methods can be used. Here, we’re using 640 x 960 pixels at 326ppi, you can also save it as a custom preset if you’ll use it frequently.

Creating Layout with Template Elements

Now, use Photoshop to develop a pixel-perfect layout on your own, but remember this can to be very tedious work.

  • This is a huge file with too many elements and to make things easier we can press “V” to activate the Move Tool.
  • Then after, click on the “Auto-Select” button on its options bar.
  • Then, rather than selecting a group, select the “Layer”.
  •  With these settings, you can now click on any element and its corresponding layer will be brought to you by Photoshop!
  • You can also develop your application’s prototype from the mockup. Depending on your app requirements, you could add striking features within the core area, available in this PSD file.
  • You can also edit the fonts, design styles, and gradient colors of the layer of the elements.

Note: Don’t resize anything as all the UI elements and bars are set to default standard sizes.

Developing Apps in Xcode



Xcode is the developer tool for iOS devices. If you are using “OS X Lion” then, you can get Xcode and all applicable packages for free from Mac App Store.

  • After the completion of installation, launch the Xcode and its welcome screen would come up.
  • Now, you can load an older project or select to make a new one. Here, you need to click on “Create a new Xcode project.
  • Then, the template window will show up with some options.
  • Under iOS Application, click on “Single View Application” and select “Next”.
  • Give the new app a name, i.e. Test.
  • Then, in the Company Identifier, type any word such as my_company, pick a directory and click on “Save.”


Xcode will create a file directory and it will get you a new window for working. Besides all the listed files, focus on folder which is named after your application.

Xcode will create a file directory and it will get you a new window for working. Besides all the listed files, focus on folder which is named after your application.

With Xcode, for designing front end elements, you will be available with xib/nib format standard to Mac OS X and iOS apps.

And, it designing of new page view every time. However, if you are creating more views in a single app the number of nib files would be hard to handle hence, a new storyboard file will hold all your nib views under one editor pane.

You can now easily add and remove UI elements and features.

Also, you’ll come across .m (implementation) and .h (header) files under same folder group.

These files include all the Objective-C functions and variables required for your app to run.

It can be better explained how Xcode works with MVC (Model, View, Controller), and also we would need 2 files for each controller.

MVC Architecture

MVC Model

MVC is not a design pattern; it’s a way that structures the web applications. Over the past few years, web applications are broadly adopting the MVC architecture, and thus, people confuse it for a design pattern.

MVC architecture follows a basic idea and its responsibilities are:

  • Model: Business logic and handle data
  • View: Whenever asked for data, presents the data to the user.
  • Controller: Fetch the necessary resources and fulfills user requests.

Each component has a different set of tasks which ensures easy functioning of the whole application along with total modularity.


The model is simply the data for our application and this data is “modeled” in such a way that it is easy to store, edit, and retrieve. It also explains how rules are applied to the data. For any web application, everything is considered as data that is to be handled easily. This whole thing ultimately represents the concepts that are managed by the web application.

Think for an app, what is a user, or a message? It is just the data that is processed according to some set of rules. So, whenever a request is made from the controller, it contacts the concerned model which fetches some data representation.  The model also contains the logic to update the appropriate controller if there is any change in the data of the model.


The view is accountable for representing the data received via the model. For the view, there might be templates where the data can be fitted. And, depending on the requirements there might also be several views per model.


The controller is just like a housekeeper of the web application, it performs synchronization between model and view to fulfill user requests.  The requests from the user are received as HTTP post or HTTP get request.

For example:  To perform any action, the user clicks on any GUI elements and the primary purpose of a controller is to call and synchronize with the model to retrieve the necessary resources required to act. Generally, while receiving the user requests, the controller calls the suitable model for the task.

A web application is always structured by keeping in mind these 3 core components. There may be a prime controller, responsible for receiving all the user requests and then calling the specific controller for specific actions.

Basically, the model holds all the functions and information that you need to display on the screen. And, the fact is that only views can interact with the screen, not the models.

Views are mainly visuals which pull out data through a ViewController.

The Controller is a way to hide your backend data from the user interface.

So, in this way, you can recreate the design multiple times without losing the functionality.

Designing View with Storyboards

Now that we know the technical aspects of an application, we shall design the interface.

Here, we are considering “ the Storyboard” option which you can find under one MainStoryboard_iPhone.storyboard file located somewhere on the left side of the window in the folder group.

 Click on the file to open the view.

A new sidebar would appear on the right side of the folder group. This is called Document Outline which is quick preview method to check off all of the views available in this storyboard.

Now we would add a few page elements to our view-controller. W For that we need 2 different elements: Navigation Bar, Tab Bar.

Before you grant access to the Attributes Inspector (View > Utilities > Show Attributes Inspector) located on the right side of the window look out for the Status Bar label.

By default it is set to Inferred which uses the standard iPhone status color.

You can also choose “Black or Translucent Black. “


The Objects Library

You can enable Utilities: View> Utilities>Show Utilities, if it isn’t visible, on the right side of the window. You will find the Object Library at the bottom of that page. Select the drop-down menu with the Objects as the first item of the list.

If not found then, select View > Utilities > Show Object Library.

Then, select Windows & Bars and click on Navigation Bar.

Then after, Drag it into the view window and put that into Status Bar with a battery-level icon.

Customize the bar’s title description now and double click on the text which reads Title, and then change it to Test1.

Press Enter to see the change.

Now once again, in the Windows & Bars panel, scroll down to choose Tab Bar; drag it into the view window; drop it at the bottom bar of your app.

You can now add another tab button in the bottom bar. Scroll down to Tab Bar Item and drag it place it in the middle of the two existing Tab Bar buttons.

bookmark tab

iOS app development is a vast topic and this was our little guide of “interface building.”
In case, you are looking out for PWA development then, Orion eSloutions has a great reputation in providing exceptional IT services. To know more, check out our services.

Have A Project in Mind?
Chat with Our Experts.

Got a Project in Mind?

Do you have any projects?

Copyright 2022. Orion eSolutions

Awards & Recognition

27114 6

570 E WILLIAM ST San Jose, 
CA 95112

27114 1


27116 1

Suite 6, 220 Northumberland St Liverpool, NSW 2170

27130 1

D-199, Sector 74 Mohali, 
 Punjab, India - 160055

Copyright © 2024 Orion eSolutions. All Rights Reserved.

Copyright © 2024 Orion eSolutions. All Rights Reserved.

Book Now
By Clicking "Accept All Cookies" ,you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts. More information  View more
Cookies settings
Accept All Cookies
Privacy & Cookie policy
Privacy & Cookies policy
Cookie name Active

Privacy Policy

At Orion eSolutions, accessible from, one of our main priorities is the privacy of our visitors. This Privacy Policy document contains types of information that is collected and recorded by Orion eSolutions and how we use it.

If you have additional questions or require more information about our Privacy Policy, do not hesitate to contact us.

This Privacy Policy applies only to our online activities and is valid for visitors to our website with regards to the information that they shared and/or collect in Orion eSolutions. This policy is not applicable to any information collected offline or via channels other than this website.


By using our website, you hereby consent to our Privacy Policy and agree to its terms.

Information we collect

The personal information that you are asked to provide, and the reasons why you are asked to provide it, will be made clear to you at the point we ask you to provide your personal information.

If you contact us directly, we may receive additional information about you such as your name, email address, phone number, the contents of the message and/or attachments you may send us, and any other information you may choose to provide.

When you register for an Account, we may ask for your contact information, including items such as name, company name, address, email address, and telephone number.

How we use your information

We use the information we collect in various ways, including to:

  • Provide, operate, and maintain our webste
  • Improve, personalize, and expand our webste
  • Understand and analyze how you use our webste
  • Develop new products, services, features, and functionality
  • Communicate with you, either directly or through one of our partners, including for customer service, to provide you with updates and other information relating to the webste, and for marketing and promotional purposes
  • Send you emails
  • Find and prevent fraud

Log Files

Orion eSolutions follows a standard procedure of using log files. These files log visitors when they visit websites. All hosting companies do this and a part of hosting services’ analytics. The information collected by log files include internet protocol (IP) addresses, browser type, Internet Service Provider (ISP), date and time stamp, referring/exit pages, and possibly the number of clicks. These are not linked to any information that is personally identifiable. The purpose of the information is for analyzing trends, administering the site, tracking users’ movement on the website, and gathering demographic information.

Cookies and Web Beacons

Like any other website, Orion eSolutions uses ‘cookies’. These cookies are used to store information including visitors’ preferences, and the pages on the website that the visitor accessed or visited. The information is used to optimize the users’ experience by customizing our web page content based on visitors’ browser type and/or other information.

Advertising Partners Privacy Policies

You may consult this list to find the Privacy Policy for each of the advertising partners of Orion eSolutions.

Third-party ad servers or ad networks uses technologies like cookies, JavaScript, or Web Beacons that are used in their respective advertisements and links that appear on Orion eSolutions, which are sent directly to users’ browser. They automatically receive your IP address when this occurs. These technologies are used to measure the effectiveness of their advertising campaigns and/or to personalize the advertising content that you see on websites that you visit.

Note that Orion eSolutions has no access to or control over these cookies that are used by third-party advertisers.

Third Party Privacy Policies

Orion eSolutions’s Privacy Policy does not apply to other advertisers or websites. Thus, we are advising you to consult the respective Privacy Policies of these third-party ad servers for more detailed information. It may include their practices and instructions about how to opt-out of certain options. You may find a complete list of these Privacy Policies and their links here: Privacy Policy Links.

You can choose to disable cookies through your individual browser options. To know more detailed information about cookie management with specific web browsers, it can be found at the browsers’ respective websites. What Are Cookies?

CCPA Privacy Rights (Do Not Sell My Personal Information)

Under the CCPA, among other rights, California consumers have the right to:

Request that a business that collects a consumer’s personal data disclose the categories and specific pieces of personal data that a business has collected about consumers.

Request that a business delete any personal data about the consumer that a business has collected.

Request that a business that sells a consumer’s personal data, not sell the consumer’s personal data.

If you make a request, we have one month to respond to you. If you would like to exercise any of these rights, please contact us.

GDPR Data Protection Rights

We would like to make sure you are fully aware of all of your data protection rights. Every user is entitled to the following:

The right to access – You have the right to request copies of your personal data. We may charge you a small fee for this service.

The right to rectification – You have the right to request that we correct any information you believe is inaccurate. You also have the right to request that we complete the information you believe is incomplete.

The right to erasure – You have the right to request that we erase your personal data, under certain conditions.

The right to restrict processing – You have the right to request that we restrict the processing of your personal data, under certain conditions.

The right to object to processing – You have the right to object to our processing of your personal data, under certain conditions.

The right to data portability – You have the right to request that we transfer the data that we have collected to another organization, or directly to you, under certain conditions.

If you make a request, we have one month to respond to you. If you would like to exercise any of these rights, please contact us.

Children’s Information

Another part of our priority is adding protection for children while using the internet. We encourage parents and guardians to observe, participate in, and/or monitor and guide their online activity.

Orion eSolutions does not knowingly collect any Personal Identifiable Information from children under the age of 13. If you think that your child provided this kind of information on our website, we strongly encourage you to contact us immediately and we will do our best efforts to promptly remove such information from our records.

Save settings
Cookies settings