LAMADWindows Phone 7

20.3.2013

Part 1

The Platform and SDK

Windows Phone 7

Mobile OSDeveloped by MicrosoftAppeared in the US in 2010Mango in 2011Tango in 2012

Live Tiles

Nokia Lumia 800

Market Share

Market Share 2012 There is Hope!

Technology

Application development in C# or VB

GUI design in XAML (Extensible Application Markup Language) Declarative XML-based language Created by Microsoft

Future of the OS

Future is not yet clear

Windows Phone 8

Version 8 just appeared 2012!

Game development maybe?

Installing development Kit

Newest Software Development Kit (SDK) version is 8.0.

It is free to download from http://create.msdn.com/.

Note! You need Windows 8 to use the newest SDK. We use 7.1.

SDK contents

• Microsoft Visual Studio [Programming tool]

• Expression Blend [Designing tool]

• Project templates [Out of the box code]

• Windows Phone Emulator [Test app without a device]

• Additional tools [Register, deploy apps, etc.]

Testing on device

1. Register:• Fee is 99 €/year • Up to 100 apps• Students = free!

2. Registration tool

3. Install Zune:http://www.windowsphone.com/en-us/how-to/wp7/zune-

software.

Deploy on a device

1. Deployment tool

Note! Unlock the device before any operation!

2. xap file is created on compile.

Access to Store

http://create.msdn.com/

• Publish, un-publish• Upgrade apps• Beta publishing• Check statistics• Modify pricing• Monitor crashes

MOPSI stats on marketplace

Hello WorldTask: “Adding a clickable check box to our main page.”

When creating a new Solution, under the default project name we can spot the:

Double click the MainPage.xaml file.

• MainPage.xaml

• MainPage.xaml.cs

Hello World

XAML code is created in:MainPage.xaml

Drag and drop CheckBox from Toolbox .

Compile and Run

Debug > Start Debugging [F5]

Select test environment

‘Play’ button shortcut

Publish App!

Login at http://create.msdn.com/ and complete steps 1 and 2

Part 2

Location

Working with LocationNative location handling object (watcher)

Initialize watcher

We want to get position updates often

Working with Location

Complete to handle every state of the watcher.

HOMEWORK

attempt to start location services

Working with Location

Uninitialize Objects

Taking location from event args

Adding a Map

Drag map from ToolBox.

Remove extra XAML. Name is enough!

Adding a MarkerOpen the MainPage.xaml.cs file

Change the location to reflect user location.Hint: Study the positionChanged function described earlier.

HOMEWORK

Test on EmulatorPowerful tool to virtually update the position

Map Credentials

We see the following message on the map:

Enter a Map Key obtained from the specified URL.

Note! Implement a Map Handler if you use maps on more pages.Keep the key in one place because map keys change often.

Part 3

JSON, HTTP request

Mobile – Server

JSON

{"name": "mopsi","age": 4,"address": {"streetAddress": "länsikatu 15","city": "joensuu"},"users": [{"name": "pasi","location": "länsikatu 15"},{"name": "matti","location": "länsikatu 15"}]}

http://json.parser.online.fr/

JSON in Windows Phone

Native JSON Support

Remember UTF – 8

Subtype Polymorphism

Animal tom = new Cat();Animal mopsi = new Dog();Animal donald = new Duck();

tom.talk(); // prints “meow”mopsi.talk(); // prints “woof”donald.talk(); // prints “quack”

Animal

Cat Dog Duck

talk(){ // not implemented }

talk(){ print (“meow”);}

talk(){ print (“woof”);}

talk(){ print (“quack”);}

inheritance

base class (superclass)

subclasses

http://en.wikipedia.org/wiki/Polymorphism_in_object-oriented_programming

Request typesAnimal

Cat Dog Duck

Request

LoginReq ShareLocationReq UsersDataReq

Examples

Requesting friends active in the last week

The process is fully encapsulated!

JSON request base class

Serializing asJSON string

Need to implement In each subclass

Publically available method

talk() from Animal example

asynchronous

Sending request information

asynchronous

JSON from ToString() method

{"lat":"62.6","lon":"29.7","request_type":"user_location","userid":"2"}

Reading server response

Handling good/bad response

Implementing a subclass

locationServer has a list of these.

User ID is global