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Here you are at Mobile Application Development guide that discusses the basics of the Android and iPhone mobile application development. I'm certainly delighted regarding the chance to pass on the valuable expertise which I’d acquired during the last years of Android development. Let's believe you will love learning about how you can develop for the Android system using this tutorial as many as I liked creating it.

Mobile application development

The Android mobile platform is barely a couple of years old, and I also witness no indication of the mobile development going slower. Definitely, it is really an interesting period in Android mobile development. Hopefully your enthusiasm shall retain while you check out this guide and later on when you publish your very own applications in the marketplace. 

You don’t need virtually any Android mobile application development practical knowledge beneath your belt to start out. I require that you understand the basics of the Java programming language, nevertheless. You ought not to be a Java expert, however you must learn the syntax, Java constructs, and basic data structures. XML is as well utilized in developing Android mobile applications, therefore I suggest being familiar with XML likewise. The Android platform is really a device-independent platform, meaning that you are able to develop applications for many different devices.

The following short training isn’t a detailed guide, nonetheless it provides you with the essential understanding to put together numerous components of the Android framework to produce entertaining and powerful applications.

Getting started with Android application development

To get started with development on Android mobile platform, you must have a pc that can run any of the subsequent platforms:

You'll be able to develop Android applications on many operating systems, including Windows, Mac OS X and Linux. I actually do the development on a Windows 8 operating system, yet you may develop working with Mac OS X or Linux alternatively.

  • Windows 8, Windows 7, Vista, Windows XP
  • Mac OS X (Intel) 10.5.8
  • Linux (i386)

In addition, you should download and install the Android SDK (free) as well as the Java Development Kit (free), in case you don’t currently have them on your PC.

You might need a real Android phone or tablet, since it is easier for you to test app on real device than on the emulator. I strongly suggest developing using a real phone, considering that it enables you to hook up with your applications as end users would.

Being a developer, you now have a chance to develop apps for a quite innovative marketplace which is growing consistently. Because there are many consumers, it’s never been simpler to create an application that can be installed and used by huge number of folks! The Android Market positions your app directly into people’ fingers effortlessly! Customers don’t need to go browsing the Web to discover an app to install. They merely look at the Android Market which is preinstalled on his or her smartphone, and they've got easy access to every one of your apps.

Can you become Android mobile application developer?

Evolving into an Android developer surely isn’t a complex challenge. Truly, it’s considerably less complicated than you may assume. To find out what’s included, think about each of these inquires:

  • Do you really desire to develop Android mobile applications?
  • Do you really love to be creative?
  • Do you really wish to pay no developer fees?
  • Do you have a PC to develop mobile apps on?

In case you replied yes to every one of these queries, you’re able to turn into an Android developer. You could be curious about the “no fees” part. Sure, you understand that appropriately: There are no fees to develop Android applications.

Android mobile development language

The Java programming language is among the superb tools which help programming Android a piece of cake as opposed to development for alternative mobile platforms. While some other languages demand for you to take care of memory, Java includes a small companion known as the Java Virtual Machine (JVM) which helps address that for you. The JVM lets you to concentrate on publishing program code to resolve a working issue simply by using a clear, comprehensible programming language (or even to develop that upcoming great racing game you’ve been having dreams about) rather than being focused on the plumbing basically to have the forms to appear.
You’re required to learn the principles about the Java programming language prior to deciding to develop your very first Android application.

Android mobile development SDK tools

The SDK tools are everything you need to develop your own Android mobile apps. They enable anyone to develop mobile applications easily and also provide you with opportunity to debug them. Additional features bundled into each release permit you to develop for the most recent version of Android.

The most popular tool among all is most likely the emulator. Google supply you with the tools you should install to develop apps, but additionally it offers you this brilliant compact emulator that enables you to try out your app! The emulator comes with a few limitations, having said that - it is unable to emulate particular hardware parts for instance the accelerometer, though not to be concerned.

The emulator is beneficial for checking your app at various screen resolutions. Though not always helpful or simple to have a lot of devices plugged into your laptop or computer simultaneously, even so, you might start several emulators with different screen resolutions.

Developing mobile applications on smartphones is significantly distinct from development on a PC or Mac. The cause is common: Ones resources (ram, CPU, and so forth) are quite limited compared to PC. If your Android device is actually a phone, its main objective is usually to carry out phone-like tasks for instance identifying an incoming call, delivering messages, and so forth.

Android mobile development Framework

Android framework has been developed with lots of amazing advantages. Most of these features were taken from countless open-source projects. The production of those projects contributed to the below libraries:

  • The Android run time
  • Open GL (graphics library)
  • WebKit
  • SQLite
  • Media frameworks
  • Secure Sockets Layer (SSL)

You’re likely wondering, “Okay, that’s all great, but exactly how do such libraries influence me being a developer?” It’s easy: Each one of these open-source frameworks are obtainable to you by using Android. You don’t need to bother about the way Android communicates with SQLite as well as the surface manager; you merely rely on them as tools within your Android tool belt. The Android staff has generated on the well-known list of verified libraries and it has provided those to you, all revealed via Android interfaces. These interfaces wrapped up the several libraries and built them practical to the Android platform as well as necessary to you as a mobile app developer.
Android has each of these libraries integrated in the background and reveals these capabilities for you without having to develop some of the benefits which they deliver.

This gives you, as a developer, opportunity to develop splendid mobile applications.
Oftentimes while developing an Android application, you’d wish to work with the identical resource like in the fundamental Android system. A perfect example could be an icon in the Options menu. By opening the Android source code, it is possible to view a number of resources and install the assets you will need for your own app. The ability to access the source code furthermore empowers you to drill down and notice just how Android performs things.

Publishing mobile app at Android Google Play Store

Submitting your mobile application on the Google Play market makes it possible for your mobile application to be installed and employed by countless end users around the globe. People are also able to rate and place feedback regarding your application, that will help you discover challenging parts that customers could be enduring.
The Android Market even offers a pair of important reports that can be used to monitor the achievements of your mobile application.

Screenshots can be a crucial section of the Android Market store since they make it easy for end users to examine your mobile application before downloading it.
Letting users to take a look at a few app pictures of your respective application is most likely the deciding factor of whether a person will download your application. Suppose you developed a video game and desired users to try it out. If you happen to invested months (or year) building thorough artwork, you’d wish the likely buyers of the game to view them to allow them to find out how amazing your app appears.

iPhone Mobile Application Development

iPhone Mobile Application Development is a starter’s guide to developing iPhone applications. You do not require pretty much any iPhone development experience or Macintosh development experience either to get going. I require that you appear like a clean slate, prepared to be loaded with valuable information and innovative ideas to implement tasks.
Due to the design of the iPhone, you may well build tiny, bite-sized applications which really can be successful. Furthermore, as you should begin modest and develop tremendous applications which do something beneficial for a consumer, it’s fairly simple to enhance yourself from “I know absolutely nothing” towards a developer who, although far from an expert, may still create a serious decent application.

During the time of this posting, over 750,000 iPhone and iPad mobile applications are accessible for download through the iTunes App Store, with additional appearing each minute-it’s an enjoyable moment to be an iPhone developer!
This short guide is designed primarily toward brand-new iPhone mobile developers, however, you must have some previous education associated with a C-based language and also be comfortable with object-oriented (OO) principles.

Getting started with iPhone application development

To get started with programming any iPhone applications, you’ll require a Macintosh computer with the newest edition of the Mac OS installed. (You can’t create iPhone applications on the iPad or iPhone.) Additionally, you will require installing the iPhone Software Development Kit (SDK) - which happens to be totally free - but you will have to become an authorized iPhone developer prior to selling your apps.
Well, I shall suppose that you've got certain programming skills and merely possess a minimum of a object-oriented programming understanding, utilizing some variation of the C language (particularly C++, C#, or perhaps even Objective-C).

The iPhone’s one-of-a-kind hardware and iOS assist you to develop an application that makes it possible for the customer to achieve something that won't be efficient, or maybe possible using a Mac computer. Even though iPhone is really a small sized, mobile or portable computer, it isn't really a alternative for computer. iPhone just isn't meant to create files, documents, or any work that includes typing or use of a computer mouse. The iPhone provides the functionality to become an helpful device for the consumer, conveniently packaged into yours daily life, and ready to attain a specific task, or part of a sequence of tasks.
Despite the fact that substantial potential of the iPhone gives you the ability to produce the captivating user experience, you have to consider the constraints of the phone too. Retaining these two in harmony is device-guided design.

One of the several important things to consider before developing a fabulous application would be to make the most of what the iPhone gives. Concerning a completely new device with state of the art potentials, just like the iPhone, this is particularly vital.
We already have iPhone mobile applications which use area information to inform you the location where the closest restaurant is, or perhaps exactly where your mates are. The capability to easy access Internet sites and web servers means that you can develop applications that are able to present actual data to the person.

Playing audio and video

iOS enables you to play and integrate video and audio, as well as play sound effects inside your application.

Together with dozens of features, on the other hand, the iPhone comes with a few limits. The true secret to thriving applications - as well as not getting yourself too silly - would be to fully grasp those limits, and develop within them. Yes, you can accomplish it though it will make development a little bit more challenging for you. These difficulties assist you recognize the types of applications which are most suitable for this unique mobile device.

iPhone display

While the iPhone’s display screen size and resolution let anyone to achieve some astonishing applications, it is nevertheless pretty much smaller than the tablet screens. If your user interface is uncomplicated and straightforward, anyone can figure out it more comfortably. With less objects in a compact display, customers can locate exactly what they wish more swiftly.

Limitations of the iPhone and mobile application development

Being an application developer for the iPhone, you've got a few device limitations to be aware of:
The amount of memory and processor performance on the iPhone is not so big compared to Mac.
iPhone OS saves energy by turning off virtually any hardware functions which are not presently being employed, a developer ought to handle the trade-off among dozens of occupied functions and lower battery life.

As you start developing iPhone app, you have to cope with choices and constraints of the iPhone, your creative thinking is absolutely free to explode to develop an appealing user experience.
It’s worth looking at just what exactly “appealing user experience” truly means and it incorporates a couple of aspects.

  • Exciting, helpful, rich information
  • Successful, quick, convenient features
  • User-friendly, nicely-developed user interface

The user interface — form following function

Despite the fact that efficiency is really unquestionable style and design concept, impressive applications are besides that conveniently easy to understand for the end user.
The principle feature of the high-quality application is instantly obvious and obtainable to the people it’s meant for. The common interface components furthermore grant tips to the customers. Customers know, for illustration, to touch control keys and pick items via table views (like for example within the contacts built-in application).

Why would you start Developing iPhone Application?

Developing iPhone applications is quite fun and I enjoyed it quite a lot last few years. Lets see why iPhone development is so much interesting.

  • iPhone applications are commonly small-sized - sufficiently small to make it on your own. An indie developer - or one having a business partner and possibly a bit of design assistance - are capable of doing them. You don’t demand a 30-developer venture with countless steps and tasks and appointments to make a product significant.
  • The applications are highly detailed and sparkling, concentrating on just what the person would like to accomplish at a specific moment and/or location. Apps are uncomplicated yet not basic. As a result, application layout is less of a challenge - and much faster.
  • The no cost iPhone Software Development Kit (SDK) causes development pretty simple.
  • Apple is going to display ones application in the App Store, and manage payments, web hosting, installing, informing users of revisions, and all those activities that many developers dislike working on. Developers select app prices for his or her masterpieces; Apple obtains 30 percent of the gross sales price, and the developer acquiring the 70 percent.

If you intend to sell or upload your app into the App Store, you will have to join the iPhone developer program and pay $99 per year . Nonetheless that’s all costs you will have for one year. Truth be told there are zero of the notorious “disguised fees” that you frequently come across, mainly when doing business with other firms.

Using Frameworks

The iPhone iOS and frameworks supply you with plenty of rather advanced features, most notably:

  • Starting the application and showing a window on the display screen
  • Presenting controls on the display screen and reacting to a person operation - clicking on a button or as an illustration altering a toggle switch
  • Opening websites on the Web, not merely via a internet browser, but from inside yours application
  • Administering user settings
  • Playing videos and music or sounds

Developing application is difficult, thus helping to make your project more challenging is obviously a thing you hope to prevent.
The iOS programming language and frameworks are object-oriented. The simplest way to grasp exactly what that truly implies would be to contemplate in relation to a team. The job which you should complete is split up and designated to specific team participants (objects).
Each participant of a team carries a task and functions with some other team participants to gain job done. Moreover, a fine team doesn’t check just what fellow members are accomplishing - the same as precisely how objects in object-oriented development devote its moment looking after app and never looking after whatever the object in the electronic workplace nearby is executing.

Looking forward to using the SDK

SDK tools assist a development plan that the majority of people find out convenient. They permit a person to immediately create a user interface up and running to notice what it essentially appears like. You can create code and add it one step by step, after which you are able to execute it after each and every change to preview how it performs. Here are steps for iPhone mobile application development:

  1. Start with a plan (your app idea).
    You should make and develop your mobile app as creative as possible. Work out your idea on paper first.
  2. Begin with Xcode.
    Xcode offers numerous project templates that you may implement for a quick start.
  3. Layout and form the user interface.
    Interface Builder has visual-design tools you can employ to develop your application’s user interface. This spares a tremendous amount of time and hard work. It additionally decreases the quantity of code you need to write by generating resource files.
  4. Start writing the code.
    The Xcode editor offers plenty of capabilities that assist you produce quality code.
  5. Create and launch application.
    You construct your application on your Mac and launch it on your iPhone mobile phone or in the iPhone Simulator application.
  6. Check how application works.
    You’ll have to analyze and evaluate the performance of your application along with reaction (speed) time.
  7. Tune your application’s usefulness.
    Once you have a working application, you would like to ensure that it will make ideal use of memory and CPU.
  8. Test it again till you achieve mobile app working as it should.
  9. Publish your app.
    Upload your iPhone mobile app to the App Store market.

How to develop great mobile application

Ensure that your mobile application is user-friendly and effortless to go with.
I may promise one point relating to app development, and it’s that none of us makes it correct at the first try. Developing iPhone apps is going to be entertaining for you personally, as well. So don’t make it too hard for yourself expecting big success from the start.

A great deal of improvements has taken place throughout recent years: In a mere twelve months, not solely have we witnessed the launch of the groundbreaking iPad 4, but we’ve furthermore watched the brand-new iPhone 5, featuring its beautiful high-resolution retina screen and impressive new hardware potential with A6 cpu.
The tools for iPhone mobile application development additionally stood a huge update. iOS 6 presents a wide range of new mobile application development interfaces (APIs) that pass on developers far more accessibility to the iPhone’s main components, in addition to, it brings fascinating fresh features, for instance high definition (HD) video and multitasking.

iPhone Application Development language

In order to develop iPhone application, you need to learn objective-C and Cocoa.  Objective-C is superset of ANSI-C language and typically used for iOS development. For those who have programmed in almost any advanced language (just like Java, C++, or perhaps PHP), you will be capable to grasp Objective-C fairly quickly. 

Cocoa relates to the collective name inclined to the frameworks supplied by Apple for both iOS and OS X development.

Frameworks

iOS 6 features a number of frameworks for development. A framework, like for example Address Book, UIKit, Core Location, Map Kit and Media Player, is basically a set of classes created to assist you to start using a specified class.
Incorporating a framework in your app helps you to do the job with the classes included inside that framework. Apple organizes these frameworks into four major aspects of operation.

  • Cocoa Touch Frameworks for taking care of every single touch and event-driven coding along with connection to system interface components just like the messaging, Address Book, mapping, and many of the user interface components.
  • Media The frameworks employed to perform and record video and audio and also give assistance for 2D and 3D artwork.
  • Core Services Frameworks for opening lots of the iPhone’s lower level capabilities particularly files, location services, in-app purchase support, and networking availability.
  • Core OS Frameworks providing entry to the file system, memory, and hardware of the iPhone.

The iPhone Developer’s Toolbox

Prior to start developing your personal mobile applications for your iPhone or iPad, you’ll have to sign up with Apple as a developer and acquire the iOS software development kit (SDK). Fortunately, these two steps are straightforward and entirely free of charge. You’ll also discover a plethora of tips relating to iPhone mobile development, like video tutorials, sample code, documentation, plus much more.
The iOS SDK consists of the Xcode integrated development environment (IDE), Interface Builder, iPhone Simulator, documentation, along with a variety of additional tools you’ll want while developing iPhone applications.

About the iPhone Simulator

You will typically benefit from the iPhone Simulator for most of your iPhone mobile development. The simulator enables you to develop, run, and test iPhone mobile applications on your pc instead of on an real iPhone. Even though you can imitatethe majority of the iPhone environment, the simulator is not able to perform a range of things well, and contains many essential distinctions from the iPhone environment.
The simulator offers substantially greater overall performance than a real iPhone.
Exactly how much faster it carries out is determined by the pc you happen to be developing with, however, if performance is fundamental within your accomplished application, you have to be checking your code on a real iPhone immediately inside your development cycle to obtain a precise level of its true efficiency.

Application Startup

Many applications include starting (splash) screens which present whilst the application is launching.
You can include a splash screen in your application by placing a picture named Default.png into the project. Instead of exhibiting a visual splash screen (that may alone increment load time of app), a large number of developers prefer to display a picture that shows the preliminary window of the application.
During developing your applications, it is achievable to shut-down them (by clicking Command+Q).

iPhone User interface Elements

iOS presents a plentiful range of controls: sliders, buttons, list boxes, switches, along with other user interface components that will help you in developing mobile applications.
All of those components might be generally split up into two most important groups, controls and views.
Controls expand on this technology and give you a way for end users to play with your application using the capability for any control to submit an action (call for a method) to some object when an event (for example touch) occurs and enable you to manage touch events.
Views give the drawing operation of your user interface.

Contacts, Calendars, E-mail, and SMS

Amongst the excellent areas of the iPhone is the way how applications may easily share information and interact with one another. For instance, when you make an appointment within the Phone application, you choose from the directory of contacts made in the Contacts built-in application.

Whilst convenience is really a unquestionable design concept, perfect applications are actually about being easy to understand for the end user. When I’m creating a journey application, it must be easy enough for even a novice user. Keep these tips as the primary goal while you develop an application:

  • The principal characteristic of a decent application is instantly obvious and reachable to a persons it’s designed for.
  • The common interface elements moreover show hints to a user how to work in an application.
  • You can’t think that customers are quite thrilled concerning your application that they’re eager to devote time and effort in working it out.

This modest tutorial should be the initial guide on iPhone application development. You'll find so many recommendable books on mastering development of iPhone applications. I have intended this tutorial at developers newcomers that need to fully grasp the way to create an iPhone application and approaches to style and put together a user interface employing Interface Builder, and who doesn't possess a strong basis in Objective - C.

Plenty of applications that you're going to develop for the iPhone will likely need to take care of data in certain way.
It is popular to show some data inside a table. In an effort to make applications for the iPhone, you should employ the Xcode development tools proposed by Apple. Xcode is really a robust integrated development environment which includes every one of the benefits from a cutting-edge IDE. It brings together a wide range of efficient capabilities consisting of code editing and refactoring, version control, debugging, and also software profiling. In case you don't already have Xcode running, it is possible to do the installation either through your OS X installment DVD or simply by getting it at the Apple developer site.

Even though garbage collection of the Objective - C runtime memory is a pleasant benefit presented to developers on the Mac OS, at this time it is not available for the iPhone or iPad.
Hence, you are accountable for supervision of the memory spent using the objects which you build in your mobile applications. In the event you forget to appropriately release the memory which you reserve, the sum of memory spent by your application shall increase as the application keeps running. This mistake to release idle memory consequences in a memory leak. Ultimately, in the case your application spends significant amount of memory, the iOS will dismiss your application.

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