Create, Design & Launch Your Iphone Application

buy app reviews

The Apple iPhone is an amazing device that invites  creativity. You’ve probably said to yourself: ‘I wish I  could do that on my iPhone.’

With the iPhone Software Development Kit (SDK), programmers can make your ideas reality – even if you yourself don’t know the difference between a C-pointer  and a SQLite database.

More than 200 iPhone application projects have already  been posted on Elance.com. Check out these tips in this article to get  your project kick-started.

We focus on the development of applications for the Apple iPhone, and we asked Nick Dalton, iPhone SDK specialist, to give Elance buyers a few tips on how to scope and post an iPhone Application project. Here’s what he had to say:

The iPhone is an amazing device that invites creativity. If you’re an iPhone owner I’m sure you’ve said to yourself: ‘I wish I could do that on my iPhone, or I have a great idea for an iPhone application’.

With the iPhone Software Development Kit (SDK), programmers can make your ideas reality – even if you yourself don’t know the difference between a C-pointer and a SQLite database. But before you go ahead and post your application idea to the buzzing iPhone project area on www.Elance,com. here are some pointers to get your project kick-started:

Study the Masters
Apple has already spent a lot of time thinking about how to present information and build interactive applications on the iPhone. The applications that come with the iPhone are the results of this research. Study them in great detail and try to apply as many of the user interface metaphors as possible to your application.

Not only will Apple be flattered if you imitate the user interface in their applications, but they actually mandate it to a great level of detail as described in their Human Interface Guidelines.

Dream in Color Screens
Most applications for the iPhone will be very visual. Therefore it makes sense to provide your requirements as screen images or sketches. You don’t have to be a graphics artist to do this effectively. An iPhone programmer is looking for the following information:

– The type of layout each screen should have

– The buttons on the screens

– The actions associated with each button

The exact shape and format of your screen sketches is secondary. As long as they are readable, it’s a great way to communicate your application design to a programmer.

Be Realistic About Your Budget
Look at other iPhone projects posted on Elance to get a sense for the bid amounts on these projects. Read the descriptions of these projects to see if they seem to be larger or smaller projects than what you have in mind. If you set your budget to under $500 for something that is realistically going to take a programmer two months to implement, you are not likely to attract many bidders.

From a programming perspective, some things are easy to do on the iPhone, while other seemingly simple things are very time consuming. For example the beautiful cover-flow animation used in the music application on the iPhone should be simple to use in other applications. Unfortunately you can’t. If you want this animation within your application it will have to be written from scratch, probably costing a one month of work.

If you talk to an approved iPhone developer early in your application design process you can learn how to get most out of your budget by avoiding the things that are really difficult to do on the iPhone.

Don’t Be Too Original
iPhone users already know how to do certain tasks on their phones by convention. For example, if you tap an item in a list that has a > icon next to it, you expect to be taken to another screen with more information about that item. If your application needs similar functionality, don’t be creative and come up with a new way to solve the same problem. Use the conventions already established by Apple.

New conventions are difficult to establish especially with the touch interface because there is no way to discover how your application works on the iPhone. Unlike a website where you can hover with the mouse pointer over areas that look like you can interact with them and a tool tip or the status bar will reveal some clues to you.

Know Your Limitations
The current version of the iPhone SDK, which is used to write applications for the iPhone, has many restrictions and limitations. Some of them are common sense, e.g. you can’t send text messages from an application. Imagine an application that sends out thousands of text messages without your knowledge, who is going to pay the phone bill for that?

Other restrictions are maddening: applications cannot access the log of phone calls, or interact in any way with the calendar or the music stored on the iPhone.

To Apple’s credit, the iPhone SDK is an amazing piece of software especially given that it was publicly released as a Beta just three months ago. Some of the shortcomings listed above will likely be addressed in future releases of the SDK.

As a buyer with an idea for an iPhone application, you should educate yourself about these limitations before you spend too much time designing an application that is impossible to implement. Talk to a developer or company that specializes in iPhone development (and there are many available on Elance) and they can help you get on the right track from the start.

About
Nick Dalton (username: 360mind) is an experienced iPhone SDK specialist and Elance.com service provider. He has 15+ years of background in programming, and currently focuses his business, 360mind, 100% on the development of iPhone applications. For more information on Nick, check out his book, 101 iPhone Tips and Tricks.

buy app reviews

Advantages of Php Development

buy app reviews

PHP Hypertext Processor is a server-side web programming language that can be embedded into HTML. PHP uses are widespread, and can include any kind of server functionality that takes user’s input and displays or manipulates the input. PHP can run on both UNIX and Windows servers, which makes it more accessible than Windows (ASP). This scripting language is growing day by day. PHP5 a fully object oriented language and its platform independence and speed on Linux server helps to build large and complex web applications.
PHP is a particularly useful programming language because it allows for advanced programming and is easy to integrate with web pages. Another plus of PHP is that the language interfaces very well with MySQL, a popular type of online database. MYSQL is a commercial grade database application that is made available free under the Open Source to anyone. Another plus of PHP is that it is Open Source Code. The actual code that is PHP is available to the public for free, while the source code for products such as ASP is not. So PHP is very cheap. Because PHP is open source, there is a large community of PHP programmers that help each other with code. This means PHP programmers can rely on each other by using reusable pieces of code called functions and classes rather than constantly reinventing the wheel. This can dramatically cut down on production time.
PHP is based on C++ language and the syntax used in PHP is quite similar to C/C++. C/C++ is still considered the best programming language by many programmers and people who love this language would surely feel more comfortable with the syntax of PHP.
PHP and MySQL are excellent choice for webmasters looking to automate their web sites. Now search spiders “see” all the content on a PHP page, the same way it is viewed in a browser. The creation of a php-shopping cart is surprisingly simple and when done with precision it could translate into a highly effective and universally accepted php-shopping cart.

buy app reviews

Why Should I Develop an Android App?

buy app reviews

Keeping up with the latest trends in electronics can help you provide the accessibility and convenience needed to promote your business. With the new Android phone, you can use the desirability of the latest thing to put your business in the forefront of your potential customers’ minds.

First, you need to find the right Android application developer for your business. This is important for the adaption of your product to be presented to the marketplace and targeted for the right market segment, thus producing the most benefit.

In a competitive climate, keeping your product or business to the forefront of potential customers’ minds is essential. Android application developers understand this, and can tailor your app to reflect your brand in the most desirable way and promote sales. This will create an awareness of your company every time a consumer uses their phone.

The benefits of Android application development for your business can include:

•Right here, right now accessibility. Consumers want instant gratification. They want everything quickly and for it to be no further away than their fingertips. If your business develops an Android app, you satisfy this need and are as accessible as your customer needs you to be.

•User friendly. Along with instant gratification, consumers will only use an app if it is user friendly. If it takes too long or is complicated, you may lose their business. The most popular apps are very easy and enjoyable to use. If the consumer is comparing you alongside a competitor, if your app is more desirable and easy to use, you are more likely to get the sale.

•Improved customer service. Part of any sale is what the customer experiences. If they have an enjoyable experience, they are likely to be repeat customers. Your Android app developer could build into the program the ability to contact your company and access your company’s service with greater ease. Your customer service call center may not be available twenty four hours a day; however your Android app can have a feature built in where a customer can send a message to your company twenty four-seven. Keeping in contact with your customer base can also be easy with an app designed to send messages to your customers on specials you are running or sending updates about your product or service.

•Create a buzz. In this economy, attracting new customers is essential to building your business. Your app can make them aware of the benefits of your product or service by advertising to a tech savvy audience. If you can present your business in an innovative way to this audience, it will capture their attention while increasing your sales.

•Close sales. All businesses are in the business of making money. A quality Android application developer can help you increase desirability to potential customers and grow your business by making suggestions about apps that will relate best to your business and/or service. A well designed app can present you with opportunities to increase your profits and introduce revenue generating options for your business.

buy app reviews

Android Application Development

buy app reviews

Android Apps Development ‘a new wave’ in the mobile market is predicted to be a greatest point in the mobile world. Android Application Development helps you to develop innovative and dynamic applications for mobile users.

Now days, mobile users want more functions and features in their mobile phones. The mobile developers want to meet the user demands by designing and building powerful mobile applications. Android Application Development is the best suitable option for them as Android is a powerful and natural platform to develop mobile applications. It contains a real power to completely change the look and feel, as well as the functions of a mobile device.

Some of the major benefits of Android Application Development are:

• It has been built to meet information in a quick manner and make correct user requested in turn

• It reduces the developmental cycle, provides easy to use development tools

• It gives the developers right to use to all services and information without any differentiation

• Gives rich browser amenities to give better services

• Android is Linux based so it gives easy contact to core mobile device functionality and Rich

While choosing experts who will do this job for you, it is always a better idea to go for the experts who are part of a company. Moreover, well-organized companies manage to achieve more within a short period of time because they can enjoy the advantages of dividing labor according to the specialization of the people.

Android Application Development is a grooming business among software development companies now days. The programmers have leveraging skills and expertise in Android Application Development. It has opened up new path for the unbelievable growth of Outsourcing Android services and expertise. The companies concerned in business of Outsourcing Android services and expertise are providing cost-effective and feature-rich solutions to its client.

You can get totally customized services with the help of the developers as per your business requirements which proves the potentiality of the people that are hired.

Once you get on hiring the developer for the same, you will be able to save lot of time, as well as capital, as with such type of hiring, you do not have to pay the in-house employees hired by you, but have to pay only for the services that you hire. Thus, you can get good development services at very reasonable prices for your business development.

buy app reviews

Rapid Application Development

buy app reviews

Rapid application development (RAD), is a software development process developed initially by James Martin in the 1980s. The methodology involves iterative development, the construction of prototypes, and the use of Computer-aided software engineering (CASE) tools. Traditionally the rapid application development approach involves compromises in usability, features, and/or execution speed. It is described as a process through which the development cycle of an application is expedited. Rapid Application Development thus enables quality products to be developed faster, saving valuable resources.

Positive aspects of RAD:

Increased speed of development through methods including rapid prototyping, virtualization of system related routines, the use of CASE tools, and other techniques.

Decreased end-user functioality (arising from narrower design focus), hence reduced complexity

Larger emphasis on simplicity and usability of GUI design

Negative aspects of RAD:

Reduced Scalability, and reduced features when a RAD developed application starts as a prototype and evolves into a finished application

Reduced features occur due to time boxing when features are pushed to later versions in order to finish a release in a short amount of time

At DOTNUTSHELL, we understand that RAD development is applicable only when the application to be developed can call on the modular nature of the frameworks used to create it. High availability and performance software aare not usually created using RAD, and neither are mission critical sysems.

buy app reviews

Choosing a Language for Application Development ?

buy app reviews

Programmers often feel a challenge when it comes to choosing an application development language. Since a single application caters to a certain task, hence language choice for app development becomes critical.

More so when it’s the case of custom application development, selecting an apt programming language holds a lot of significance since this choice is an index of the framework to be used in app development . However, the choice must be made in accordance with the financial capacity of the user, technical proficiency and project requirements.

The application development languages can be put under two major heads namely, open source languages and proprietary languages. Let us have a glance at some of the popular application development languages.

Perl

Perl is one of the most preferred open source programming languages since a programmer can get access to any desired development tool from this feature-rich language for creating dynamic web pages. It’s apt for huge development projects as well as fast prototyping. A large number of community members are always toiling hard to improve this powerful programming language even richer.

PHP

Hypertext Preprocessor, better known as PHP, is a well-liked programming language owing to its attributes such as flexibility and simplicity. Since community members keep updating & developing this language quite frequently, hence it has been able to carve its niche in popularity among the developer community.

ASP.NET

One of the most flexible application development languages, ASP.NET, which any programmer can apply directly with scripted languages as well as compiled languages. However, there is a flip side to it that it is a bit slow in speed. Hence, application development process suffers due to this handicap. ASP.NET can be conveniently attuned with VisualStudio.NET, WebMatrix etc.

JSP

Java Server pages, popularly known as JSP, is an open source Java technology that is free to download and use. It is commonly used for creating HTML/XML based dynamic web pages. This app development language can be used even in dearth of Java knowledge. The USP of this language is its rich repository of tag extensions, which are quite simple.. Also, this language enables programmers to integrate tag handlers.

With this information at your disposal, you’re ready to make your choice now !

Follow us on Twitter http://twitter.com/brickredtech

buy app reviews

Windows Mobile application development

buy app reviews

Mobile and compact devices become more and more popular in our society. Each of us faces with them every day. Certainly each of us has mobile phone, hand-held computers or other hi-tech devices.

All of these devices have different mobile platforms. There are such known platforms as Windows MobileM, iPhone, BlackBerry, Symbian OS, Android, Maemo, OpenMoko etc. All of them have different history and advantages and failings.

Introduction

Such platforms as Windows Mobile, BlackBerry, iPhone are «closed» enough and limited by either their own devices (BlackBerry, iPhone) or development complexity. Among other problems of above mentioned platforms there is limited API. Even Java platform for mobile devices has some failings such as great number of limitations; very different APIs; device dependent code. Symbian and Windows Mobile platforms are better from this point as far as they support wider range of devices and their APIs give more options.

Common problem here is also that there are a lot of platforms. Talking about OpenSource and Cross-Platform solutions we should say that they are still developing at the moment and are not widespread yet.

In this article we’ll pay our attention to the Windows Mobile platform.

Microsoft Company released its first platform for inbuilt devices at the end of the 90th. In 2002 Windows CE.NET platform appeared. And at that time Pocket PC based on Windows CE 3.0 platform and higher were released. Further development of wireless communication technologies managed to combine telephone and personal computer. Thus Pocket PC 2002 Phone Edition appeared which supported the standards of GSM, GPRS, Bluetooth and wireless HS network access. In the same time another device concept was developing that was much similar to the above mentioned but was closer to the telephone then to personal computer. This device was named SmartPhone 2002. Fundamental difference between Smartphone and Pocket PC is that Pocket PC has touch screen while Smartphone has only control buttons. They also had different application scopes and supported different standards and technologies.

Windows Mobile platform more belongs to smartphones, communicators and small personal devices. Windows CE and Windows Embedded platforms are commonly used in different industrial equipment.

Now we have Windows Mobile 5 and Windows Mobile 6 generations and Windows Mobile 7 will be released soon. Modern devices based on Windows Mobile Pocket PC; have 500-600 MHz processors and 64-128 MB RAM that is not little for such devices.

1. Development Tools

There are a few models of development of applications for Windows Mobile:

  • Win32 API
  • MFC
  • .NET Compact Framework.

Microsoft Co gives developers all necessary tools for development of applications for PDA, Pocket PC; and Smartphone.

Here are some advices about different code type choosing.

  • Use Native Code for achieving the burst performance, direct work with hardware, and also for minimization of system resource requirements.
  • Use Managed Code for development of GUI-oriented applications which main requirements are development and market deployment terms. Managed Code is also good for the easy work with web-services.
  • Use Server-Side Code for work with different devices through a single code base, and also if wide stable communication channel with a device is present.

Below are the reviews of present development tools for PDAs, Pocket PCs and Smartphones.

eMbedded Visual C++ 4.0

Microsoft eMbedded Visual C++ 4.0 development environment is meant to create applications for devices with Windows CE .NET 4.2 operating system and also (with package of updates SP3) for PDA and Smartphones on the Windows Mobile 2003 Second Edition platform. The development environment eMbedded Visual C++ 4.0 is good for creation of native code for mobile and inbuilt devices with Windows CE .NET 4.2 OS. It allows developer to perform Just-In-Time Debugging for diagnostics of unhandled exceptions, Attach-to the process for the extended debugging of processes, and also interaction with an emulator.

Visual Studio .NET and SDP functions

SDP (Smart Device Programming) functions of the integrated environment of development Visual Studio .NET 2003 (2005, 2008) allow to create applications, that uses possibilities of Microsoft .NET Compact Framework platform. Thus a developer can create the distributed mobile data-processing systems, workings both in scenarios with connection and without permanent connection. Vast class library of .NET Compact Framework platform makes application development much quicker than with traditional development tools.

Visual Studio .NET lets create applications for the Pocket PC 2002 devices and (with proper SDKs) Pocket PC 2003, 2005 and Smartphone 2003, 2005, applying the same tools as those used for the development of applications for desktop PCs. Library .NET Compact Framework is installed together with Visual Studio .NET. This library is specially developed for devices with the limited resources. Developers can also use new languages C# and Visual Basic .NET for applications for mobile and inbuilt devices. They are good in workings with web-services and ADO.NET technologies.

Control elements of ASP .NET Mobile Controls extend SDP functions and .NET Compact Framework platform. They give opportunities to use possibilities of .NET Compact Framework and Visual Studio .NET for development of mobile web-applications due to the data delivery to various mobile devices by means of ASP.NET technology. This approach allows to create single mobile web-application in the Visual Studio .NET environment, that will automatically perform data rendering for displaying on various devices: mobile phones, smartphones, PDA, Pocket PC. The integrated development environment makes it possible to create mobile web-applications simply by dragging control elements on forms.

ASP.NET System sets no components on a client device. For adaptation of formatting under concrete browsers server logic is used. It generates information in the formats of Wireless Markup Language (WML), HTML, and Compact HTML (cHTML).

Microsoft SQL Server

Microsoft SQL Server Compact Edition (SQL Server CE) is a compact DBMS for rapid development of applications that extend possibilities of work with enterprise data due to the mobile devices using. SQL Server CE is a tool facilitating development of mobile applications due to support of SQL syntax and usage of application and API interface model that is compatible with SQL Server.

SQL Server CE provides the basic set of relational database functions, in particular optimized query handler; support of transactions and heterogeneous types of data – with unpretentious requirements to the system resources. Remote access to the data and replication by confluence provide reliable delivery of information from the SQL Server bases, possibility of autonomous work with by information and subsequent synchronization with the server. SQL Server CE is good for the systems with mobile devices and wireless networks.

SQL Server CE DBMS is developed for integration with .NET Compact Framework by means of Visual Studio .NET. It simplifies development of applications for work with databases on mobile and built devices. New data supplier of SQL Server CE for code management in the Common Language Runtime environment helps to develop distensible applications with possibilities of autonomous work with information in scenarios without permanent connection.

Microsoft .NET SqlClient gives API for work of both .NET Framework and .NET Compact Framework applications. For the common Windows systems SqlClient Microsoft with SQL Server are used, and SqlServerCe for Microsoft SQL Server Compact Edition databases for Compact Framework.

Name space of SqlClient is in both versions. So we can interact:

  • Using .NET Compact Framework SqlClient to have an access to SQL Server from device on Desktop.
  • Using .NET Compact Framework SqlServerCe to have an access to SQL Server Compact Edition directly on a device.

Work with databases on a device is similar to the work on Desktop. To access to SQLServer on Desktop system SQL uses TCP/IP connection thus in this case it is possible not to have SQL Server Compact Edition installed on a device.

All of the mentioned models are implemented on the desktop systems. So the experience of their application can be carried for development of the programs for Windows Mobile. Using Win32 API we rapidly get compact code, and also can use it for development of drivers and system component.  Using MFC we have extensions of API functions, and also designer for development of interface. And using Compact Framework we have at our disposal well developed interface, automatic garbage collection, support of XML and other options. Also there is even more truncated version — Micro Framework, where there are less SDK functions.

After SDK for MS Visual Studio installation new configurations of assembling appear as well as new functions for assembling under these platforms. Suit also contains Emularor for software development and testing without physical connection between device and computer.

As far as many devices that are based on Windows Mobile have ARM processor it is also possible to compile units using other compilers: AVR32, ARM (RealView), GNUARM, IAR Systems.

2. Building Windows Mobile Applications for Windows Mobile devices using MS Visual Studio .NET

Visual Studio development environment together with Compact Framework enable to develop applications using a vast graphic interface, databases, archiving and encrypting tools,  USB, Serial, Bluetooth, and also wireless network connections and telephony. All of these is provided by SDK as well as libraries and heading files from Platform Builder.

2.1 User Interface

Due to the presence of good designer in VS and SDK we can easily develop GUI for mobile applications just the same as for Desktop applications. The only difference is in sets of  graphic components for Desktop systems and for Windows Mobile. There is also difference between components of Smartphone and Pocket PC versions caused by that Pocket PC has a touch screen and SmartPhone has not. Therefore development of interface for SmartPhone is more complex. One should take it into account when developing software for both platforms.

Here we should also mention that software built for Pocket PC won’t start on the SmartPhone platform while the opposite situation is possible – till the moment when some special Smartphone function is called.

It is naturally that many graphic components as well as majority of functions from full-size Framework were taken away from Windows Mobile SDK to reduce the size of the SDK on the device side. Only the most needful elements were left. But the productivity and volumes of memory are increasing so the number of function included in SDK becomes greater. So the difference between Compact Framework 1.0 and 2.0 is enormous. Version 1.0 was very limited.

In general the development of GUI with ?ompact Framework on ?# is similar to the development of the common Win32 application on C#.

It is also possible to develop a graphic interface using assembling of the 3D rendering-engines. They are such as GAPI (Game API), OPENGL ES (Embedded System), OPENVG (Vector Graphics), and other projects. Certainly it is rather labor intensive process as far as it is very important to write an optimal code because of the relatively low  productivity of mobile devices.

2.2 Communications

To date mobile devices have a wide range of communicational options. They have an access to the wireless high-speed network using 802.11 WiFi Connection standard. They also use IrDa, Bluetooth, and USB host/client functionality. While the usage of Irda is gradually getting less protocols and standards of Bluetooth, WiFi, Edge, GSM, and also USB are used quit often.

Microsoft Company provides such APIs:

  • ActiveSync API provides functionality for work with services of synchronization, file filters, etc.
  • Bluetooth API provides functionality for wireless access to mobile and peripheral devices.
  • Connection Manager API serves for the automation of connection process, network connection management. Devices are using Connection Manager to establish connection and also to inform about the supposed connection (for example Internet).
  • Object Exchange (OBEX) API provides functionality for work with effective, compact binary protocol just suitable for devices with the limited possibilities.
  • Remote API (RAPI) provides functions for management and remote call of methods on the device side. Such functions are available: access to the register, files, databases and different configurations of device from the Desktop-system. The most important option is Remote Procedure Call when we simply call the method «CeRapiInvoke()» on the Desktop side, transmit the name of DLL on the device side and the name of function in this DLL and then just call this method.
  • Pocket Outlook Object Model API provides functions for work with the objects of Pocket Outlook. It provides interfaces for synchronization and access to the objects: Task, Calendar, Contacts.
  • Telephony API (TAPI) includes:
    • Assisted API
    • Extended API
    • Phone API
    • SIM Manager API
    • Short Messages Service (SMS) API
    • Telephony Service Provider (TSP) API
    • Wireless Application Protocol (WAP)  API.

Also mobile devices have possibility to work with Serial (USB) ports. There are a few COM-ports in many devices. Usually the first 3-5 of them are reserved for IrDa, Bluetooth, SerialPort and others. Other ports are available to for user. Some devices have USB-Host functionality in other words they are USB On-The-Go (OTG) devices which can serve both as USB Client and USB Host. For this purpose device should have necessary Hardware and Software (Device Driver).

Device Driver is a driver which is an intermediate layer between the driver of HOST and  level of applications. Such driver provides «Stream Interface Driver» and must contain such functions as:

  • XXX_Init
  • XXX_Open
  • XXX_Close
  • XXX_Write
  • XXX_Read
  • XXX_IOControl

Here “XXX” is replaced with «prefix» (for example «COM», «DSK»).

This prefix registers in the registry when a driver registers in the system. More detailed information about Device Driver Interface can be obtained from MSDN.

Also a developer can use such APIs not concerning communicational ones:

  • Device Configuration API
  • File and Application Management API
  • Game API
  • Home Screen API
  • HTML Control API
  • MIDI API
  • Shell API
  • Speech Recognizer API
  • Vibrate API
  • Voice Recorder Control API.

2.3 P/Invoke and Native Interop

As far as Compact Framework contains basic functions and methods from complete

Framework we have such functionality as:

  • XML Serialization
  • Cryptography
  • Security
  • Reflection
  • Interop Services et al.

Certainly Platform Invoke calls are accessible. For this purpose – as well as in complete Framework – we use functions and attributes from namespace System.Runtime.InteropServices and DllImport attribute for description of functions which will be called from non-managed code.

However the functionality of these methods is limited. So Marshal class has PtrToStructure, GetComInterfaceForObject, Copy() and Read() functions but, for example, there is no such function as GetDelegateForFunctionPointer() in it. So it is impossible to make Marshaling just with Delegate. The GetFunctionPointerForDelegate function is available only. If we want to transmit a pointer to the function from Managed code we should get its FunctionPointer and only after that transmit it to the unmanaged code for subsequent call of it from there. Also we can not transmit some objects because Compact Framework can not count SizeOf() for some objects. Therefore frequently we have to transmit  data of Blitable types only and arrays of these types (Int, byte, char, but not bool),  and transmit and receive  classes and structures by means of IntPtr. Certainly it is explained by aspiration to increase the performance. It is therefore recommended to use primary types for Marshaling and «GCHandle» class for storing an object in the process memory and to make this memory «visible» for unmanaged code

Certainly the performance of P/Invoke calls from C# application in C++ DLL is almost twice less than the performance of method calls between C++ DLLs. However the performance of devices grows and it becomes possible to use such calls.

2.4 Debugging

MS Visual Studio enables to make debugging of applications under

Windows Mobile just the same as for Desktop applications. We have Emulator, Device Emulator Manager and other to functionality such as Breakpoints, Threads, Watches panel etc.

However to make Debug using Native and Managed code simultaneously is impossible. Therefore it is possible to start either C++ projects or Managed ones. It’s also so for «Attach to process». There is a possibility of attaching to the processes on the device side (or emulator side). ActiveSync is required to provide communication between a device and the system, it is installed with SDK. An emulator also can be connected to the computer by means of ActiveSync. We obtain almost complete emulation of Windows Mobile devices. Here are both SmartPhone and Pocket PC (or Pocket PC Phone Edition) emulators. However only one Windows Mobile device can be connected to the computer at one time moment. Therefore Debug on two devices simultaneously which for example interact in some way is rather difficult. Certainly we talk only about Debug of applications developed by us but not about applications and services of the system. For such debugging we need the complete built of the system created by means of Platform Builder (in the last versions of Platform Builder it’s included in Visual Studio). We can also create our own SDK for Visual Studio and Windows CE platform.

An emulator also enables to emulate connection with the GSM network and GPS support. It makes possible to test and develop large spectrum of applications without having a physical device in hands.

Talking about Debug with IDA we should mention that version 5.1 already has the possibility to perform Debug by means of this interactive disassembler with the use of their plugin which is installed on a device.

With SDK appearance such option as «Deploy» appears in Visual Studio environment. Now there is «Deploy» item in project context menu additionally to “Build”, “Clean”, “Debug”. After you choose this item DLL or EXE file built by current configuration is transmitted to the device. Also new column appears in Configuration Manager where not only «Build» in some configuration option is available but also «Deploy». Deployment of .NET projects transmits not only the unit but also those builds that are depended on it (Dependencies).

3. Deployment and installation

Development of applications for Windows Mobile supposes also their assembling and creation of installation package. For this purpose there is such concept as ?abinet (.cab) file in Windows Mobile. It is a common archive but it is a installation package also (a sort of MSI package). It is assembled by means of Cab Wizard (cabwiz.exe) from MS VisualStudio (or from a command line). This utility creates processor dependent «.cab» file. WinCEApplicationManager transmits and starts CAB on a device, so user can install the application using instructions appearing on device screen. It is also possible to create the project of MSI Installation which includes CAB file by means of Visual Studio. This built package will be started on user computer and then transmit ?AB installation on a device to continue installation process.

There is special Uninstall Manager on the device side. One should attach configuration INI-file to CAB file. This INI file includes settings to manage installation process such as path, shortcut name to create, minimal OS version to install the application and others written in special syntax. It is also possible to include your own DLL into CAB-file to widen installation options. This DLL contains such functions as «Installer_AfterInstall», «Installer_BeforeInstall», «Installer_AfterUnInstall», «Installer_BeforeUnInstall», code in these functions will be executed on the device side in the certain moments of installation or uninstallation process.

When developing CAB installation it is possible to attach files, different resources, built units, add information to the registry. They are designated as «Project Output. That’s why there is no need to reset anything after CAB-file creation: it will collect all included projects and files and assemble in an archive.

4. Security Model for Windows Mobile 5 and Windows Mobile 6

Devices based on Windows Mobile receive, send and analyze potentially important information which should be protected from unsafe applications. To protect device the starting of unknown applications is disabled, the access to some API is restricted and some registry parts changing is forbidden. Units can be marked as Trusted and Untrusted and system uses this information to prevent starting of unauthorized applications and limit their access to the system. Also the access to the system by means of RAPI (Remote API) through ActiveSync can be restricted. Security Certificates Security Rights are used for the executable units (EXE, DLL) and for CAB-files.

Protection Against Threats and Risks

The followings options help to protect devices:

  • Strict password protection.
  • PIN code protection.
  • Devices corrupt deleted information to prevent access to it (WM 6).
  • Devices corrupt deleted information on memory cards to prevent access to it (WM 6).
  • Storages encryption and Advanced Encryption Standard for SSL (WM 6).
  • Own certificates usage.
  • Detecting a device via Bluetooth can be protected (WM 6 Smartphone).
  • 2 layer system of application starting (One-tier and Two-tier access).
  • No support of macros, therefore viruses can make much harm.

The start of applications is based on Permissions. Windows Mobile devices use such models:

  • Privileged
  • Normal
  • Blocked

Privileged applications have the widest access. They can access any API, write in the protected areas of registry and have the complete access to the system.

Most applications have Normal model. They do not have access to the trusted API and do not have the complete control of the system.

Application can not be started at all if it has “Blocked” status. It means that it’s not signed with the proper certificate or user forbade the start by the proper warning of the system.

Analogical situation is with Cab-files. The executable units with Normal status can start Privileged DLL but then they will work as Normal. However Privileged executable units can not start the units having Normal status.

Written by Eugene Kordin, Apriorit specialist.

Learn more about development process of Apriorit here.

buy app reviews

Sdk for Iphone and Itouch Platforms – Will This Create a Boom in Free and Commercial Applications for Apple Gadget?

buy app reviews

SDK for IPhone

Apple has released the iPhone Developer Program which provides a complete and integrated process for developing, debugging, and distributing applications for iPhones and iPod touch platoform.The SDK comes complete with development resources, real-world testing on iPhone, and distribution on the App Store, you will have everything you need to go from code to the customer.

Go to http://developer.apple.com/iphone/program to find more details around this SDK program.
You can either download the Free iPhone SDK which include the Xcode IDE, Instruments, iPhone simulator, frameworks and samples, compilers, Shark analysis tool, and more. Or you can choose to enroll into the iPhone developers program at standard of enterprise program levels which will cost you from USD 99 to USD 299 in order to enroll.
However, you will need a Apple ID to do so, if you do not have that, you will have to go through the application registration to get enrolled. When done this, select the program you want to enroll into, and wait for Apple to approve you for this entry.
So now you can develop any type of application for the iPhone. Well, we have to wait and test the SDK to see how open it is, and what it gives developers in respect to tools to twist the most out of this gadget.
So, whether you are a games developer or you want to make business applications, you have the chance now to get on the train to do so.

buy app reviews

The IPhone App Life Cycle

buy app reviews

The application development life cycle refers to a logical sequence of activities to develop an application according to set goals and objectives. However iPod touch apps are IT applications and as such have some unique characteristics that must be understood. Regardless of the scope and complexity any application development goes through a series of stages during its life. First there is a conception phase, in which the outputs and critical success factors are defined. Second, is the planning phase, in which the application development project is broken down into smaller parts/tasks. Third, is the execution phase, in which the application development plan is carried out. Last, is the exit phase, in which the application development project is closed out. The completion of the application development plan results in a finished product or application that is then presented for sale in the Apple App Store. With IT application development the phases do not have to be completed in sequence many tasks from different phases can be accomplished simultaneously. This is a big advantage because the application development project can move forward at a faster pace if numerous tasks are accomplished simultaneously.

iPod touch apps development activities can be grouped into phases so that the manager and his/her team can better plan and organize the resources needed to complete each activity, and also establish objective metrics for progress and to justify decisions for moving ahead, correcting or ending the app development project. Diverse application development tools are available in the different phases. Below is a closer look at what is important in each phase.

1. Conception

In this first stage, the scope of the iPod touch App development project is defined along with the approach to be taken to deliver the desired outputs. The application development project manager is appointed and in turn, he selects the team members based on their skills qualifications. Project Charter, Business Plan, Project Framework (or Overview), Business Case Justification, and Milestones Reviews are common tools for use in the conception stage.

2. Planning

The second phase of IPod touch apps development should include a detailed identification and assignment of each task until the end of the application development project. It should also include a risk analysis and a definition of criteria for the successful completion of each deliverable. The oversight process is established, beneficiaries identified and reporting criteria and reporting methodologies agreed. Business Plan and Milestones Reviews are commonly used tools in the planning stage.

3. Execution and Controlling

The focus of this phase of iPod touch apps development is the proper execution and control of project activities. The plan from the planning phase is implemented to accomplish the project requirements. As the plan progresses, groups from other areas of the organization become involved to prepare for the final testing, production, and support of the product. Risk Analysis, Score Cards, Business Plan and Milestones Reviews are commonly used tools in the execution and controlling phase.

4. Closure
In this last stage of iPod touch app development, the manager must ensure that the project is brought to its proper completion. The closure phase is characterized by a written report containing the following components: a formal acceptance of the final product, a matching of the initial requirements specified by the client with the delivered product, releasing project resources, and a closure notification to higher management. The app is then submitted to the App Store and the waiting period begins. Different developers have had different experiences in terms of how quickly their apps were approved. Sometimes Apple requires the developer to make changes to that app and then resubmit it for approval. Others have experienced quick approvals within a few short days. Once approved, the iPhone or iPod touch app makes its way into the proper category in the App Store for all the buyers to see.

buy app reviews

Android Application Development – Designing and Building new applications for mobile market

buy app reviews

Android Application Development ‘a new wave’ in the mobile market is predicted to be a crowning point in the mobile world. Android Application Development helps you to develop innovative and dynamic applications for mobile users.

Now a days, mobile users want more functions and features in their mobile phones. The mobile developers want to meet the user demands by designing and building powerful mobile applications. Android Application Development is the best suitable option for them as Android is a powerful and instinctive platform to develop mobile applications. It contains a real power to completely change the look and feel, as well as the functions of a mobile device.

Using Android, the developers can create powerful and innovative mobile applications very easily and quickly.  Android is a mobile software platform as well as operating system designed on the Linux Kernel. It is open source software, which is developed by Google and the Open Handset Alliance.

As it is open source, the developers can do OS level customization at a minimal cost. Android provides support for Java to develop mobile applications. Therefore, the mobile application developers can create third party applications using Java and Android Framework.

Android offers various features to create inventive and modern mobile applications:

  • GSM, EDGE, CDMA, Bluetooth, WI-Fi, EV-DO, and UMTS technologies to send and receive data across mobile networks.
  • Comprehensive libraries for 2D and 3D graphics.
  • A wide range of libraries for image, video, and audio files, which includes MPEG4, H.263, H.264, AMR, AMR-WB, MP3, AAC, JPG, BMP, GIF, PNG, WAV, and MIDI formats.
  • Features of Video camera, touchscreens, GPS, accelerometer, and magnetometer.
  • Interprocess communication (IPC) message passing
  • P2P using Google Talk.
  • SQLite for data storage

Android includes a SDK that provides a wide range of libraries and tools for Android Application Development. The SDK provides a complete set of tools to design the UI for an application and to develop and debug application code.

The SDK includes multiple versions of Android platform (For example, Android 1.1, and Android 1.5) that you can use for Android Application Development. For each version, the SDK provides a fully compliant Android library and system image.

Android SDK includes some core applications:

  • An e-mail client compatible with Gmail
  • An SMS program
  • A Personal Information Management (PIM) program including a calendar and contact list
  • A Google Map Application
  • A web browser
  • A music player
  • A picture viewer
  • The Android Marketplace client to download third-party application
  • The Amazon MP3 store client to purchase DRM free music

Android Application Development is based on four basic components:

  • Activities: A UI component that corresponds to display screens. Each activity displays one screen to the user. When the activity is not running, the operating system can kill it to save memory space.
  • Broadcast Receiver: Is a reaction to an event. For example, phone ringing.
  • Services: The tasks that run in the background. For example, an MP3 players running in the background while the user has gone to use other application on mobile device.
  • Content Provider: Shares data with other activities and services.

Android Application Development is a grooming business among software development companies now a days. The developers have leveraging skills and expertise in Android Application Development. It has opened up new path for the incredible growth of Outsourcing Android services and expertise. The companies involved in business of Outsourcing Android services and expertise are providing cost-effective and feature-rich solutions to its client.

buy app reviews