App Programming Guide
Basics of App Design
How and from where the process of app development starts is a common query amon...
Being familiar with basic techniques and patterns of iOS design
Irrespective of the kind of app in your mind, some fundame...

Custom objects data model – generally simple data is combined by custom object, like strings,
dates, URLs, numbers and ...
Will your app be universal or specifically targeted at iPhone or iPad?
Developing universal app requires you to specify a ...
Upcoming SlideShare
Loading in …5

Basic Guide and Tips for App Designing and Programming | iOS App Design | iOS App Development


Published on

Basic guide and information for mobile app design and development. You can also Hire the app designers and developer from us.

Published in: Design, Technology
1 Like
  • Be the first to comment

No Downloads
Total views
On SlideShare
From Embeds
Number of Embeds
Embeds 0
No embeds

No notes for slide

Basic Guide and Tips for App Designing and Programming | iOS App Design | iOS App Development

  1. 1. App Programming Guide Basics of App Design How and from where the process of app development starts is a common query among those who are beginners in the field of developing apps for iOS. Once a basic idea about app has been created, the next step is to turn it into action to implement your app. In terms of design, you are required to make a few crucial decisions regarding the best way to implement your ideas. Besides, it is also important that your first Xcode project is set up in a way which will facilitate the further development. For those who are actually beginners at developing apps for iOS, it is very important to spend some time understanding the crucial and basic concepts involved. Although plenty of tutorials are available for helping you start writing coding right away, however iOS system requires to be built from initial design patterns. Spending some of your time learning these patterns is sure to help you later on. Doing Initial Designing An app can be designed in many ways and amazingly, many of the popular approaches do not even require you to writing any codes. For starting an interesting app, all you need to get started is an idea, which can be then expanded into a fully featured product. In the initial phase of designing, you should understand the purpose your app will be able to serve. Also note down the features which will be needed for implementing your idea and then prioritise the mentioned features on the basis of the needs of your users. Doing some research regarding iOS can prove helpful in making you understand the capabilities and the way these can be used for achieving your goals. It is a good idea to start sketching out a few rough designs for interface on a paper, as will help you visualize the final outlook of your app. Click here for app design at: Initial designing is also important for finding answers to some highly important questions regarding your app. Steps mentioned above, like deciding the features and sketching a few interface designs can prove helpful in considering the requirements while writing codes. At a point, you might realize that the information being displayed by the app should be translated into a group of data objects. The way your app looks can also influence the choice to be made by you while implementing the codes of user interface. As compared to doing it on a computer, sketching the initial rough design on a piece of paper also offers you more freedom of creating better answers which might transcends the boundaries of what is possible and easy. Ideally you should read iOS human interface guidelines before getting started with the initial design. Several techniques for making the initial design are described in this book, along with various tips and useful guidance for creating apps that will work perfectly in iOS. Reading iOS technology overview can also help you in understanding how well the iOS's capability can be used for achieving design goals you have in mind.
  2. 2. Being familiar with basic techniques and patterns of iOS design Irrespective of the kind of app in your mind, some fundamental techniques and patterns of design are there for you to be familiar with, before writing code. Specific frameworks in iOS provide an important infrastructure for app creation and in many cases these frameworks are the single method available for accessing underlying hardware. However several design patterns might be used by frameworks assuming that you have familiarity with them. Spending time to understand and know such design patterns can be very important in understanding the way system can prove helpful while developing your app. Most important and common design patterns which you should be aware of are:     Model view controller – the entire structure of app is governed by this one design pattern. Delegation – this particular design pattern helps in transferring date and information among different objects. Target action – the purpose of this particular design pattern is to translation user interactions through controls and buttons in code which can be executed by your app. Block objects – blocks can be used for implementing synchronous code and call-backs. Sandboxing – every iOS apps required to be put in sandboxes for keeping the system, as well as other apps protected. Sandbox's structure has an impact on how the files of your app are placed and also lead to implications for various features related to app and data backups. Memory management in efficient and accurate way is crucial for the iOS apps. As the usable memory available in case of iOS apps is generally lesser as compared to a desktop computer, thus it is important for apps to be fast when deleting useless objects, while be lazy when crating objects. For efficient management of memory, apps make use of ARC or Automatic Reference Counting feature of compiler. Using ARC might not be mandatory, but it is generally recommended. Another alternative available requires memory to be managed by you by releasing and retaining objects explicitly. Plenty of design patterns are available as well, which you might notice being used occasionally and which you might include when writing code. You can see Start Developing iOS Apps Today in order to get comprehensive review of various techniques and patterns to be used for creating iOS apps. Translating initial design into action plan It is assumed by iOS that the design pattern of Model-view-controller is being used for building apps. Thus the initial step that can be taken by you for achieving your goal is choosing a specific approach for data as well as viewing portions of the app.  Selecting basic approach for the data model: Existing data model code – in case you have access to data model code which is written in language based on C then the code can be integrated in your app for iOS directly. As objective C is usually used for writing iOS apps, thus it will work fine with other codes which used languages that are C based. However, at the same time, it is also beneficial to written Objective C wrapper for a code which is non-Objective C.
  3. 3.  Custom objects data model – generally simple data is combined by custom object, like strings, dates, URLs, numbers and many more, along with business logic required for managing the data and ensuring its consistency. Custom objects can be used for storing combinations of pointers and scalar values to various objects. For example, classes for various data types, as well as storing collections of objects are defined by Foundation framework, thus making it much simpler to define custom objects. Structured data model – in case of highly structured data, which allows it to be stored in database, Core Data or SQLite can be used for storing data. It offers simple and object oriented methods for management of structured data. Besides it provides support which is built in for various latest features such as iCloud and undo. Decide if support for the documents is needed Documents performs the job of managing the in-memory data model objects of your app and coordinating the storing of data in corresponding file or multiple files on the disk. Usually files are connoted by documents which users create however document can be used by app for managing non users facing files as well. Using documents has plenty of advantages like making interaction with iCloud easier, while making local file system simpler. Similar support is provided by UIManagedDocument for apps which make use of Core Data for storing their content.   Selecting an approach for user interface Building block approach – certainly the simplest way for creating user interface is by assembling it using the current view objects. Visual elements, like buttons, tablets, text fields and many more are represented by views. Many views are used by you as they are, however the behaviour and appearance of views can be customised as required to serve your needs. New visual elements can also be implemented by use of customized views and mixing these views with standard views of your interface. Providing constant user experience is among the various benefits of views, while allowing you to not only define intricate interfaces easily, but also by using relatively shorter code. OpenGL ES – Based approach – if sophisticated rendering and constant screen updates are required by your app, then you might be required to draw content using OpenGL ES directly. It is primarily used for apps and games that heavily rely on the sophisticated graphics, thus requiring best possible performance. Getting started with the process of app creation After the action plan has been formulated, you can get started with coding. For those who are new to creating iOS apps, spending some time exploring the basic Xcode template is a good idea, as it is offered for development. Work required by you to do can be simplified considerably, making it possible for you to have your app implemented in minutes. Such templates also make it possible for the initial project to be customized for supporting the specific needs you have more precisely. Thus while you create your Xcode project, the answers to some questions mentioned below will be already in your mind:  What your app's basic interface style is like? Different groups of initial views, as well as view controllers, are required by various kinds of apps. Being aware of how the user interface is to be organized allows you to select a template for initial project which is well suited to specific requirements you have. User interface can be changed later on; however selecting an appropriate and suitable template makes it very easy to get started with your project.
  4. 4. Will your app be universal or specifically targeted at iPhone or iPad? Developing universal app requires you to specify a particular set of view controllers and views for iPhone and iPad, while electing appropriate runtime set dynamically. Universal apps appear as the more preferred choice as these support more number of iOS devices, however you will be required to factor the codes better for every platform. You can see 'Creating a Universal App' for more information about the way universal apps affects the code written by you. Will your app use storyboards? Design process can be simplified by storyboards as these show both view controllers and views of the user interface, along with the transitions taking place among them. iOS 5 and latest versions support storyboards and these are by default enabled for using in new projects. In case your app requires iOS's earlier versions for running, then you might be required to use nib files as using storyboards might not be possible. Are you using Core Data for data model? Some apps are able to naturally lend themselves to structured data model, making it ideal for being used with Core Data. You can see Core Data Programming Guide for detailed information regarding Core Data, as well as its numerous advantages. Using the questions mentioned below, Xcode can be used for crating files of initial project, as well as start coding: In case Xcode has not been installed yet, then do it now, besides configuring your team for iOS development. You can see App Distribution Guide for information regarding how development team can be set and how you can prepare the Xcode environment. Create an initial project of Xcode Prior to writing code, the new project of Xcode should be build, as well as run. Targeting your app for the iOS Simulator can help you in seeing it run. All new Xcode projects begin with fully functional, but feature less, app. App is required to run, as well as display default views which are found in nib file or main storyboard, which might not seem too interesting. The prime reason because of which app runs, is due to the infrastructure offered by UIKit to you. The purpose of this infrastructure is to initialize the app, load file of initial interface and check app with system, for starting handling events. You can see The App Launch Cycle and The Core Objects of your App for detailed information regarding its infrastructures, as well as the capability provided by it. Click here for mobile app design and development and Hire iphone App developer at