Welcome!

Java Authors: AppDynamics Blog, Pete Pickerill, Elizabeth White, Sematext Blog , Charles Jolley

Blog Feed Post

Android to Windows Phone 8 Part 3: Exploring the Windows Phone Project

 

Over the past several weeks I’ve been working on some content I’m excited to finally share with you through a series of blog posts. This series will introduce you to Windows Phone 8 development from an Android developer’s perspective. Through the course of the series you’ll create your first app. It won’t be anything pretty, but you’ll learn the ins and outs of the development environment, how to create a simple user interface, and how to perform navigation. Along the way you’ll see some Android Hints that will help make it easier for you to transition your existing skills to the Windows Phone platform. You’ll also see some Visual Studio Tips to make you more productive in your development environment. Good luck!

In the last lesson you created your first Windows Phone project. In this lesson you’ll spend some time exploring the project and learning about some key files and directories.

WMAppManifest.xml


This is the application’s manifest. It is an XML document that contains details about the app, such as the App ID and the capabilities the app uses.

ANDROID HINT

WMAppManifest.xmal is similar to the AndroidManifest.xml file used by Android applications.

 

Here is some additional information about the manifest:

  • When you submit your apps to the Windows Phone Store, info from the manifest file is used in the certification process, to filter your app correctly in the Store, and to deploy and run your app on the device.
  • The info from the manifest file is stored as metadata in the app database.

If you double-click the manifest in the solution explorer you’ll get a UI you can use to edit the various properties of the manifest. For this app we’ll leave everything as is.

ANDROID HINT

In the generic Android app example I mentioned earlier, you set the default activity for the app in AndroidManifest.xml. Typically it looks something like this:

If you open up WMAppManifest.xml you’ll see an option for Navigation Page this is where you set the default page for the app to open when it starts.

 

MainPage.xaml and MainPage.xaml.cs


As mentioned in the last lesson XAML (eXtensible Application Markup Language) is the declarative language used to create the UI for Windows Phone applications. MainPage.xaml is the default page for your application. This is where you’ll create your simple UI (in the next lesson). MainPage.xaml.cs is the associated C# code that goes along with your UI.

VISUAL STUDIO TIP

The *.xaml.cs file that is associated with a *.xaml file is called the code-behind file.

 

ANDROID HINT

The relationship between *.xaml and *.xaml.cs files is similar to the relationship between layouts and activities in Android development. When you create a generic Android app, you’ll get an activity_main.xml file in the res > layout
directory. This is where you define the UI for your Android app. You also get a MainActivity.java file in your src directory. This is where you write the code that goes along with the UI. In our app MainPage.xaml corresponds to activity_main.xml, and MainPage.xaml.cs corresponds to MainActivity.java

 

App.xaml and App.xaml.cs


App.xaml can be used to store information about application wide resources. By default a reference is added to a file used to store localized string values.

App.xaml.cs provides application-specific behavior to supplement the default application class. This is also where you can tie into the following events of the application lifecycle:

  • Launching – when the application is initially launched.
  • Activated – when the application is brought to the foreground after being in the background.
  • Deactivated – when the application is sent to the background due to a system event (i.e. phone call).
  • Closing – when the user presses the hardware Back button.

ANDROID HINT

The following table maps the appropriate Android method to its Windows Phone event counterpart:

Android Method

Windows Phone Event

onCreate()

Launching

onStart()

Launching

onResume()

Launching or Activated

onPause()

Deactivated

onStop()

Closing

onDestroy()

Closing

 

The Windows Phone application lifecycle will be covered in depth in another installment of this series.

Assets Directory

The Assets directory contains default artwork used by the application.

ANDROID HINT

The items contained in the Assets directory are similar to those found in the res/drawable-* directories of your Android projects.

 

Resources and LocalizedStrings.cs

The Resources directory contains resources used across the application. By default it contains one file, AppResources.resx. This file is where you store strings displayed in the UI for localization.

ANDROID HINT

AppResources.resx is similar to the res/values/strings.xml file used in Android projects.

 

The LocalizedStrings.cs file wraps access to the AppResources.resx file and gives your app programmatic access to the string resources it contains.

As you can see, Visual Studio gives you a lot for free so you can get started on your app. You should continue to explore your project set up as well as the files and directories that get created with the of the other project templates as Visual Studio does a lot of heavy lifting for you.

In the next lesson you’ll learn how to run your application.

Previous Posts in this Series

  • Setting up the Development Environment
  • Creating Your First Windows Phone Project

Additional Resources


 

Read the original blog entry...

More Stories By Adam Grocholski

Hey there! My name is Adam Grocholski, and I'm a Technical Evangelist at Microsoft where I spend time focusing on Windows, Windows Phone, and Windows Azure. I live in the frozen tundra of Minnesota and run thinkfirstcodelater.com. You can also follow me on twitter at @codel8r.

@ThingsExpo Stories
SYS-CON Events announced today that Windstream, a leading provider of advanced network and cloud communications, has been named “Silver Sponsor” of SYS-CON's 16th International Cloud Expo®, which will take place on June 9–11, 2015, at the Javits Center in New York, NY. Windstream (Nasdaq: WIN), a FORTUNE 500 and S&P 500 company, is a leading provider of advanced network communications, including cloud computing and managed services, to businesses nationwide. The company also offers broadband, phone and digital TV services to consumers primarily in rural areas.
The BPM world is going through some evolution or changes where traditional business process management solutions really have nowhere to go in terms of development of the road map. In this demo at 15th Cloud Expo, Kyle Hansen, Director of Professional Services at AgilePoint, shows AgilePoint’s unique approach to dealing with this market circumstance by developing a rapid application composition or development framework.
The Internet of Things is not new. Historically, smart businesses have used its basic concept of leveraging data to drive better decision making and have capitalized on those insights to realize additional revenue opportunities. So, what has changed to make the Internet of Things one of the hottest topics in tech? In his session at @ThingsExpo, Chris Gray, Director, Embedded and Internet of Things, discussed the underlying factors that are driving the economics of intelligent systems. Discover how hardware commoditization, the ubiquitous nature of connectivity, and the emergence of Big Data a...
"BSQUARE is in the business of selling software solutions for smart connected devices. It's obvious that IoT has moved from being a technology to being a fundamental part of business, and in the last 18 months people have said let's figure out how to do it and let's put some focus on it, " explained Dave Wagstaff, VP & Chief Architect, at BSQUARE Corporation, in this SYS-CON.tv interview at @ThingsExpo, held Nov 4-6, 2014, at the Santa Clara Convention Center in Santa Clara, CA.
The major cloud platforms defy a simple, side-by-side analysis. Each of the major IaaS public-cloud platforms offers their own unique strengths and functionality. Options for on-site private cloud are diverse as well, and must be designed and deployed while taking existing legacy architecture and infrastructure into account. Then the reality is that most enterprises are embarking on a hybrid cloud strategy and programs. In this Power Panel at 15th Cloud Expo (http://www.CloudComputingExpo.com), moderated by Ashar Baig, Research Director, Cloud, at Gigaom Research, Nate Gordon, Director of T...
SYS-CON Events announced today that IDenticard will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. IDenticard™ is the security division of Brady Corp (NYSE: BRC), a $1.5 billion manufacturer of identification products. We have small-company values with the strength and stability of a major corporation. IDenticard offers local sales, support and service to our customers across the United States and Canada. Our partner network encompasses some 300 of the world's leading systems integrators and security s...

ARMONK, N.Y., Nov. 20, 2014 /PRNewswire/ --  IBM (NYSE: IBM) today announced that it is bringing a greater level of control, security and flexibility to cloud-based application development and delivery with a single-tenant version of Bluemix, IBM's platform-as-a-service. The new platform enables developers to build ap...

“In the past year we've seen a lot of stabilization of WebRTC. You can now use it in production with a far greater degree of certainty. A lot of the real developments in the past year have been in things like the data channel, which will enable a whole new type of application," explained Peter Dunkley, Technical Director at Acision, in this SYS-CON.tv interview at @ThingsExpo, held Nov 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA.
DevOps Summit 2015 New York, co-located with the 16th International Cloud Expo - to be held June 9-11, 2015, at the Javits Center in New York City, NY - announces that it is now accepting Keynote Proposals. The widespread success of cloud computing is driving the DevOps revolution in enterprise IT. Now as never before, development teams must communicate and collaborate in a dynamic, 24/7/365 environment. There is no time to wait for long development cycles that produce software that is obsolete at launch. DevOps may be disruptive, but it is essential.
"People are a lot more knowledgeable about APIs now. There are two types of people who work with APIs - IT people who want to use APIs for something internal and the product managers who want to do something outside APIs for people to connect to them," explained Roberto Medrano, Executive Vice President at SOA Software, in this SYS-CON.tv interview at Cloud Expo, held Nov 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA.
Nigeria has the largest economy in Africa, at more than US$500 billion, and ranks 23rd in the world. A recent re-evaluation of Nigeria's true economic size doubled the previous estimate, and brought it well ahead of South Africa, which is a member (unlike Nigeria) of the G20 club for political as well as economic reasons. Nigeria's economy can be said to be quite diverse from one point of view, but heavily dependent on oil and gas at the same time. Oil and natural gas account for about 15% of Nigera's overall economy, but traditionally represent more than 90% of the country's exports and as...
The Internet of Things is a misnomer. That implies that everything is on the Internet, and that simply should not be - especially for things that are blurring the line between medical devices that stimulate like a pacemaker and quantified self-sensors like a pedometer or pulse tracker. The mesh of things that we manage must be segmented into zones of trust for sensing data, transmitting data, receiving command and control administrative changes, and peer-to-peer mesh messaging. In his session at @ThingsExpo, Ryan Bagnulo, Solution Architect / Software Engineer at SOA Software, focused on desi...
"At our booth we are showing how to provide trust in the Internet of Things. Trust is where everything starts to become secure and trustworthy. Now with the scaling of the Internet of Things it becomes an interesting question – I've heard numbers from 200 billion devices next year up to a trillion in the next 10 to 15 years," explained Johannes Lintzen, Vice President of Sales at Utimaco, in this SYS-CON.tv interview at @ThingsExpo, held Nov 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA.
"For over 25 years we have been working with a lot of enterprise customers and we have seen how companies create applications. And now that we have moved to cloud computing, mobile, social and the Internet of Things, we see that the market needs a new way of creating applications," stated Jesse Shiah, CEO, President and Co-Founder of AgilePoint Inc., in this SYS-CON.tv interview at 15th Cloud Expo, held Nov 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA.
SYS-CON Events announced today that Gridstore™, the leader in hyper-converged infrastructure purpose-built to optimize Microsoft workloads, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. Gridstore™ is the leader in hyper-converged infrastructure purpose-built for Microsoft workloads and designed to accelerate applications in virtualized environments. Gridstore’s hyper-converged infrastructure is the industry’s first all flash version of HyperConverged Appliances that include both compute and storag...
Today’s enterprise is being driven by disruptive competitive and human capital requirements to provide enterprise application access through not only desktops, but also mobile devices. To retrofit existing programs across all these devices using traditional programming methods is very costly and time consuming – often prohibitively so. In his session at @ThingsExpo, Jesse Shiah, CEO, President, and Co-Founder of AgilePoint Inc., discussed how you can create applications that run on all mobile devices as well as laptops and desktops using a visual drag-and-drop application – and eForms-buildi...
We certainly live in interesting technological times. And no more interesting than the current competing IoT standards for connectivity. Various standards bodies, approaches, and ecosystems are vying for mindshare and positioning for a competitive edge. It is clear that when the dust settles, we will have new protocols, evolved protocols, that will change the way we interact with devices and infrastructure. We will also have evolved web protocols, like HTTP/2, that will be changing the very core of our infrastructures. At the same time, we have old approaches made new again like micro-services...
Code Halos - aka "digital fingerprints" - are the key organizing principle to understand a) how dumb things become smart and b) how to monetize this dynamic. In his session at @ThingsExpo, Robert Brown, AVP, Center for the Future of Work at Cognizant Technology Solutions, outlined research, analysis and recommendations from his recently published book on this phenomena on the way leading edge organizations like GE and Disney are unlocking the Internet of Things opportunity and what steps your organization should be taking to position itself for the next platform of digital competition.
The 3rd International Internet of @ThingsExpo, co-located with the 16th International Cloud Expo - to be held June 9-11, 2015, at the Javits Center in New York City, NY - announces that its Call for Papers is now open. The Internet of Things (IoT) is the biggest idea since the creation of the Worldwide Web more than 20 years ago.
As the Internet of Things unfolds, mobile and wearable devices are blurring the line between physical and digital, integrating ever more closely with our interests, our routines, our daily lives. Contextual computing and smart, sensor-equipped spaces bring the potential to walk through a world that recognizes us and responds accordingly. We become continuous transmitters and receivers of data. In his session at @ThingsExpo, Andrew Bolwell, Director of Innovation for HP's Printing and Personal Systems Group, discussed how key attributes of mobile technology – touch input, sensors, social, and ...