Windows Phone 8 Unleashed
Sams Publishing (Verlag)
978-0-672-33689-8 (ISBN)
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Vaughan teaches through complete sample apps—leveraging the MVVM pattern—illuminating each key concept with fully explained code and real-world context. He presents best practices for building highly functional, maintainable, and attractive mobile interfaces; integrating touch, rich media, and data; testing; profiling; and more.
Expanded and updated, Vaughan shares expert insights available in no other book, drawing on his exceptional access to the Windows Phone development team through the elite Microsoft Silverlight and WPF Insiders group. Along the way, he presents exceptionally practical and thorough coverage of many powerful new Windows Phone 8 platform enhancements, including full chapters on voice commands and speech synthesis, incorporating speech-driven experiences, Wallet integration, new Live Tile capabilities, the Nokia Maps control, launching apps via file and protocol associations, and much more.
Detailed information on how to…
* Get started quickly with Windows Phone XAML development in Visual Studio
* Master the Capabilities Model, threading, and the Execution Model
* Create attractive mobile interfaces using Windows Phone’s rich set of controls, including the Windows Phone Toolkit
* Make the most of the application bar and other interface elements
* Enhance user experience with advanced support for touch, gestures, and sensors
* Build location-aware apps that use Nokia Maps and location services
* Incorporate speech-driven experiences
* Quickly internationalize apps for global markets
* Leverage Windows Phone 8’s improved camera support
* Connect apps to online services via SOAP, REST, and OData
* Validate user input on the client side or via WCF services
* Use Windows Phone 8’s powerful local database support
* Implement background actions, file transfers, and audio playback
* Automatically launch your app using file and protocol associations
* Unit test to find defects earlier, saving time and money
Daniel Vaughan is cofounder of Outcoder, a Swiss software and consulting company dedicated to creating best-of-breed connected user experiences and leading-edge back-end solutions, using the Microsoft stack of technologies—in particular WPF, Windows 8, WinRT, Silverlight, and Windows Phone. Daniel is a Microsoft MVP for Client Application Development, with commercial experience across a wide range of industries, including finance, e-commerce, and multimedia. Daniel is a Silverlight and WPF Insider, a member of the elite WPF Disciples group, a three-time CodeProject MVP, and is a member of the Microsoft Developer Guidance Advisory Council. He is a technical advisory board member of PebbleAge, a Swiss finance company specializing in business process management. He also is the creator of a number of open source projects, including Calcium and Clog. Daniel blogs at http://danielvaughan.org, where he publishes articles and software prototypes. You also can catch Daniel on Twitter at @dbvaughan. Daniel has a degree in Computer Science from UNE, where he received various awards, including twice the annual School of Mathematics, Statistics and Computer Science Prize, and the Thomas Arnold Burr Memorial Prize in Mathematics. With his wife, Daniel runs the Windows Phone Experts group on LinkedIn at http://linkd.in/jnFoqE. Originally from Australia and the UK, Daniel is based in Zurich, Switzerland, where he lives with his wife, Katka, and son Bertie.
Preface xxii
Part I Windows Phone App Development Fundamentals
Chapter 1 Introduction to Windows Phone App Development 1
Installing the Windows Phone SDK........................................................2
Creating Your First XAML for Windows Phone App.................................2
The Application Class..................................................................7
Summary...........................................................................................11
Chapter 2 Fundamental Concepts in Windows Phone Development 13
Understanding the Role of XAP Files....................................................14
The Application Deployment Tool...............................................15
The Windows Phone Capabilities Model...............................................16
Determining App Capabilities Using the Marketplace Test Kit.........17
The Threading Model for XAML-Based Graphics and Animation in Windows Phone...........................................................................18
Performance and Element Visibility..............................................19
Deciding Between Visibility and Opacity......................................20
Understanding the Frame Rate Counter................................................20
The Windows Phone Application Analysis Tool.....................................22
External Events..........................................................................25
Frame Rate Graph.......................................................................25
CPU Usage Graph.......................................................................25
Memory Usage MB Graph...........................................................26
Storyboards................................................................................26
Image Loads...............................................................................26
GC Events..................................................................................26
Viewing Detailed Profiling Information........................................26
Reading Device Information................................................................27
Calculating Available Memory.....................................................28
DeviceStatus Events...................................................................29
Applying the Model-View-ViewModel Pattern to a Windows Phone App......31
Implementing the MVVM Pattern................................................31
ViewModelBase Class...................................................................32
Property Change Notification..............................................................33
Implementing INotifyPropertyChanged: The Traditional Approach.........33
Implementing INotifyPropertyChanged: An Alternative Approach..........35
Using Commands...............................................................................38
Argument Validation..........................................................................39
A Platform-Agnostic Dialog Service.......................................................41
Consuming Local Web Applications.....................................................44
Summary...........................................................................................46
Chapter 3 Understanding the Application Execution Model 47
Exploring the Execution Model............................................................48
Application State........................................................................49
Life Cycle Events........................................................................49
Programmatically Exiting an App.................................................53
Saving Transient State.................................................................53
Restoring Transient State.............................................................55
Saving Persistent State.................................................................56
Implementing Fast App Resume...........................................................56
Enabling Fast App Resume...........................................................56
Optimizing the Resume Experience..............................................57
Running Under the Lock Screen...........................................................63
Lock Screen Management............................................................64
Page Navigation..................................................................................67
Navigation Using Unmapped URIs...............................................69
Passing Page Arguments Using Query Strings................................71
URI Mapping.............................................................................73
Navigation Using the NavigationService.....................................75
Handling Page Navigation...........................................................76
Canceling Navigation.................................................................77
Cross-Page Communication.........................................................77
Page Redirection.........................................................................78
Hardware Back Button................................................................79
Creating an Application Splash Screen..................................................80
Walking Through the Bookshop Sample Application.............................83
Displaying the Product List..........................................................86
Design-Time Data.......................................................................92
Image Caching...........................................................................93
Overview of the Sample Bookshop WCF Service............................95
Summary...........................................................................................97
Chapter 4 Controlling Page Orientation 99
Orientation and the PhoneApplicationPage Class..................................99
OrientationChanged Event.........................................................100
PhoneApplicationPage Orientation Property...............................102
Setting Page Orientation at Runtime...........................................105
Animating Page Elements When the Page Orientation Changes.....106
Animating the Entire Page When Orientation Changes.................108
Windows Phone Toolkit Animated Page Transitions.............................110
Using Windows Phone Toolkit Transitions..................................111
Reusing the Transition Attached Properties..................................113
Summary...................................................................................114
Part II Essential Elements
Chapter 5 Using Content Controls, Items Controls, and Range Controls 115
Control Type Taxonomy....................................................................116
Identifying Controls Not Supported or Absent in Windows Phone.........118
Content Controls...............................................................................119
Defining the Default Content Property........................................120
Receiving Input with Buttons..............................................................121
Tap and Click Events.................................................................123
Button Click Mode....................................................................124
Hyperlink Button......................................................................124
Repeat and Toggle Buttons.........................................................124
Radio Button.............................................................................128
Check Box................................................................................131
ToolTip....................................................................................138
Items Controls............................................................................138
ListBox....................................................................................140
ComboBox................................................................................142
Range Controls............................................................................142
ProgressBar..............................................................................144
Progress Indicator......................................................................145
Slider......................................................................................151
ScrollBar.................................................................................152
Summary....................................................................................152
Chapter 6 Mastering Text Elements and Fonts 153
Understanding Text Element Types.....................................................154
Displaying Text Using the TextBlock...................................................155
Using the Run and LineBreak Objects..........................................155
Multiline TextBlock Text...........................................................158
Controlling Font Properties................................................................158
Understanding the Built-In Fonts........................................................160
Using Third-Party Fonts via Font Embedding.......................................162
Leveraging FontSource to Assign a Font Using a Stream................164
Receiving Input Using a TextBox.........................................................165
Software Input Panel..................................................................165
Input Scope...............................................................................168
Input Scope Sample Overview.....................................................169
Receiving Password Text Using a PasswordBox......................................175
Displaying Rich Content Using a RichTextBox.....................................176
Formatting Text at Runtime.......................................................178
Further Reading.........................................................................179
Placing Text on the Clipboard............................................................179
Summary.....................................................................180
Chapter 7 Employing Media and Web Elements 183
Displaying Images with the Image Element..........................................184
Image Sizing.............................................................................185
Providing a Drawing Surface with the InkPresenter Element................186
Capturing User Input.................................................................188
InkPresenter Sample Code........................................................190
Playing Audio and Video with the MediaElement..................................193
MediaElement Sample Code........................................................194
XNA SoundEffect Class..............................................................201
Harnessing the XNA Game Loop Via the GameTimer Class.....................202
XNA Environment Initialization.................................................203
Saving Music to the Media Library......................................................205
Viewing High-Resolution Images with the MultiScaleImage Element.....207
Image Tiling..............................................................................208
Creating a Deep Zoom Image.....................................................208
Exploring the MultiScaleImage API.............................................210
Deep Zoom Viewer Sample Code................................................212
Displaying Web Content with the WebBrowser Element.........................217
Monitoring and Canceling Navigation........................................217
Communicating with a Web Page...............................................218
Injecting Web Page Behavior......................................................222
Storing and Browsing Content in Isolated Storage........................225
Summary.........................................................................228
Chapter 8 Taming the Application Bar 231
Exploring the Built-In Application Bar.................................................231
Using the ApplicationBar..........................................................232
Modifying the Application Bar’s Appearance................................234
Icon Button and Menu Item.......................................................234
Icon Button Image.....................................................................235
Retrieving a Button or Menu Item at Runtime..............................236
Introducing the Custom AppBar..........................................................237
AppBar Buttons and Menu Items.................................................237
Button and Menu Item Visibility.................................................238
Sample Code.............................................................................238
Switching to Full-Screen.............................................................244
Customizing the Appearance of the System Tray..........................247
Inside the AppBar Control..........................................................248
Summary...........................................................................252
Chapter 9 Enriching the User Experience with the Windows Phone Toolkit Controls 253
Getting Started with the Toolkit..........................................................254
In-Place Selection Using the ListPicker..............................................255
Display Modes...........................................................................255
Suggesting Text with the AutoCompleteBox.....................................259
Using AutoCompleteBox with MVVM...........................................260
Defining a Custom Filter Using the ItemFilter Property..............264
Dynamic Population of the Suggestion List..................................266
Styling the Suggestion List..........................................................268
Data Binding and the AutoCompleteBox.Text Property..................270
Displaying a ContextMenu...........................................................271
ContextMenu and MVVM............................................................273
Hosting a ContextMenu in a ListBoxItem.....................................275
Selecting Date and Time Values with the DatePicker and TimePicker....277
Using the DatePicker and TimePicker.........................................279
Adding a Control Header...........................................................281
Customizing the Value Format...................................................281
Customizing the Full-Screen Picker Page......................................282
Providing Custom Looping Lists with the LoopingSelector...................287
Providing Touch Feedback with the TiltEffect...................................291
Supporting Other Controls.........................................................292
Providing a Boolean Option with the ToggleSwitch..............................293
Using the ToggleSwitch.............................................................294
Localizing the ToggleSwitch.......................................................295
Changing the Switch Color........................................................297
Using Flexible Layouts with the WrapPanel...........................................297
Child Element Spacing...............................................................298
Sample Overview.......................................................................298
Using a WrapPanel in Conjunction with a ListBox.......................300
Summary...........................................................................302
Chapter 10 Creating Jump Lists with the Long List Selector 303
Visual Structure of the Long List Selector.............................................304
Presenting Flat Lists.....................................................................305
Presenting Grouped Lists....................................................................307
Marketplace App List Sample..............................................................307
Displaying a List of Contacts Using the LongListSelector....................316
Summary........................................................................................323
Chapter 11 Creating Expansive and Engaging Apps with the Pivot and Panorama 325
Pivot and Panorama Differences and Similarities...................................326
Style Assumptions.....................................................................326
Introduction to the Pivot Control..............................................327
Introduction to the Panorama Control.........................................327
Pivot and Panorama Placement in the FCL...........................................328
Performance Improvements in Windows Phone 8.................................329
Using the Pivot Control.....................................................................329
Placing a Pivot on a Page...........................................................329
Creating a Pivot Application with the Visual Studio New Project Dialog..................................331
Pivot Anatomy.........................................................................331
Setting the Active PivotItem......................................................332
Pivot Load Events.....................................................................333
Hosting Multiple Application Bars with the Pivot........................333
Populating a Pivot Via a Data Bound Collection..........................344
Using the Panorama Control........................................................347
Panorama Anatomy....................................................................347
PanoramaItem Control................................................................349
Sample Panorama Application......................................................350
Things to Avoid When Using the Panorama and Pivot..........................355
Windows Phone Toolkit Lockable Pivot...............................................355
Summary.......................................................................................355
Part III Windows Phone App Development
Chapter 12 Processing Touch Input 357
Handling Touch with Mouse Events....................................................358
Touch and TouchPoint Classes.............................................................360
Mouse Event Promotion.............................................................361
Handling the Touch.FrameReported Event...................................362
Manipulation Events..........................................................................363
Handling Manipulation Events...................................................364
Manipulation Events Example....................................................366
UIElement Touch Gesture Events.........................................................368
Tap Gesture..............................................................................369
Double Tap Gesture...................................................................370
Hold Gesture.............................................................................371
Windows Phone Toolkit Gestures........................................................372
Getting Started with Toolkit Gestures..........................................373
GestureListener Events in Detail...............................................373
GestureBegin and GestureCompleted Events................................380
Gesture Sample Code.................................................................381
Designing Touch-Friendly User Interfaces............................................386
Three Components of Touch......................................................386
Sizing and Spacing Constraints...................................................387
General Guidelines....................................................................387
Summary..................................................................................388
Chapter 13 Portraying Your App with Live Tiles 389
Getting Started with Live Tiles............................................................389
Tile Sizes and Resolutions...........................................................391
Introducing the Cycle Tile Template....................................................391
Introducing the Flip Tile Template......................................................394
Introducing the Iconic Tile Template...................................................395
Programmatically Updating Shell Tiles.................................................396
Controlling the Lock Screen’s Background and Notification Area...........397
Setting the Lock Screen’s Background Image................................399
Setting the Lock Screen’s Notification Text..................................401
Creating a Lock Screen Icon.......................................................403
Summary........................................................................404
Chapter 14 Leveraging Built-In Apps via Launchers and Choosers 405
API Overview....................................................................................405
Choosers and the Application Execution Model....................................407
Internal Workings of the ChooserBase.Completed Event...............407
Launchers and Choosers in Detail.......................................................408
Retrieve Driving Directions Using the BingMapsDirectionsTask.....409
Displaying a Location on a Map Using the BingMapsTask..............413
Navigating to a Connection Setting Page Using the ConnectionSettingsTask..........................................................413
Selecting an Email Address with the EmailAddressChooserTask.....414
Preparing an Email with the EmailComposeTask............................417
Saving a Contact’s Email Using the SaveEmailAddressTask...........418
Navigating to an App on the Marketplace with the MarketplaceDetailTask...........................................................422
Launching the Marketplace App with the MarketplaceHubTask......425
Allowing the User to Review Your App Using the MarketplaceReviewTask...........................................................426
Searching the Marketplace with the MarketplaceSearchTask.........427
Playing a Media File Using the MediaPlayerLauncher....................428
Placing a Call with the PhoneCallTask.........................................435
Selecting a Phone Number with the PhoneNumberChooserTask.......437
Saving a Contact’s Phone Number with the SavePhoneNumberTask...439
Searching the Web with the SearchTask......................................442
Sending Contacts a Link Using the ShareLinkTask.......................444
Posting a Status Update to Social Networks Using the ShareStatusTask.....................................................................445
Preparing an SMS With the SmsComposeTask................................445
Navigating to a Web Page Using the WebBrowserTask....................446
Selecting a Contact’s Address Using the AddressChooserTask........447
Saving a Contact to the Phone’s Contact List Using the SaveContactTask.....................................................................449
Taking a Photo with the CameraCaptureTask................................450
Inviting Game Players with the GameInviteTask...........................453
Selecting a Photo from the Photo Hub Using the PhotoChooserTask...................................................................454
Sharing Images with Other Devices Using NFC or with Other Registered Phone Services...............................................460
Creating a Ringtone with an Audio File Using the SaveRingtoneTask...................................................................461
Contacts and Appointments...............................................................464
Retrieving Contacts...................................................................464
Storing Contacts in the Custom Contact Store.............................469
Detecting Changes in Stored Contacts.........................................477
Converting a Stored Contact to and from a vCard........................478
Retrieving Appointments............................................................478
Saving an Appointment Using the SaveAppointmentTask......................483
Summary......................................................................484
Chapter 15 Receiving Messages from the Cloud Using Push Notification 485
Push Notifications Types....................................................................485
Benefits of Push Notification..............................................................486
Understanding Push Notification........................................................487
Getting Started with Push Notification................................................489
Subscribing to Push Notification.........................................................489
Binding to the Shell...................................................................490
HttpNotificationChannel Events................................................491
Handling Channel Errors...........................................................492
Power Management and Push Notification...........................................493
Sending Push Notifications.................................................................495
Toast Notifications.............................................................................495
Receiving a Toast Notification from Within an Application...........496
Sending a Toast Notification.......................................................497
Tile Notifications...............................................................................500
Sending a Tile Notification.........................................................501
Updating an Application Tile Using a Shell Tile Schedule..............504
Raw Notifications..............................................................................505
Sending a Raw Notification........................................................505
Receiving a Raw Notification......................................................508
Identifying Notifications in an HttpWebResponse..................................509
Notification Classes......................................................509
Cloud Service Authentication.............................................................511
Authenticating a Cloud Service...................................................511
Creating a Notification Channel for an Authenticated Cloud Service.....511
Building a Stock Ticker Application.....................................................511
Sample App Notifications...........................................................520
Summary.......................................................................524
Chapter 16 Sensing Motion and Attitude 525
Sensors Overview....................................................525
Measuring Force with the Accelerometer..............................................527
Using the Accelerometer Class...................................................528
Simulating Acceleration with the Emulator..................................529
Smoothing Accelerometer Readings.............................................530
Calibrating the Accelerometer.....................................................533
Shake Detection........................................................................537
Measuring Direction with the Compass...............................................539
Using the Compass Sensor..........................................................539
Compass Orientation.................................................................545
Calibrating the Compass............................................................546
Sensing Rotation with the Gyroscope..................................................548
Using the Gyroscope Sensor.......................................................549
Improving Sensor Accuracy with the Motion Sensor.............................552
Using the Motion Sensor............................................................553
Summary...........................................................................557
Chapter 17 Building Location Aware Apps 559
Location Sensing Technologies...........................................................559
A-GPS.......................................................................................560
Cell Tower Triangulation............................................................561
Wi-Fi Triangulation...................................................................562
Geographic Location Architecture.......................................................562
Getting Started with Location.............................................................563
Geolocator Class.......................................................................563
Background Location Tracking............................................................569
Testing Apps That Use the Geolocator.................................................570
Code-Driven Location Simulation.......................................................571
A Walkthrough of the Location Viewer Sample....................................575
GeoLocationViewModel Class.......................................................575
Displaying Location Using the GeoLocationView Page...................577
Civic Address Resolution............................................................580
Sampling the PositionChanged Event with Rx......................................580
Getting Started with Rx for Windows Phone................................580
Summary..............................................................................584
Chapter 18 Incorporating Map-Based Positioning 585
Getting Started with the Map Control.................................................586
Obtaining an ApplicationId and AuthenticationToken................587
Overview of the Sample Map View......................................................587
Adjusting for Low Light Conditions....................................................588
Changing Cartographic Modes............................................................589
Panning and Zooming the Map Control..............................................590
Centering the Map to the Phone’s Current Location.....................590
Setting the Viewable Area of the Map..........................................592
Adjusting Pitch and Heading..............................................................593
Location Tracking..............................................................................594
Overlaying Custom Map Content........................................................596
Calculating and Displaying a Route.....................................................598
Calculating the Shortest Route Between Two Points......................598
Using the Route Calculator.........................................................601
Searching for a Route Using the View..........................................602
Modifying Page Elements Using Visual States.......................................604
Displaying the Route and Itinerary..............................................609
Showing a Location with the Built-In Maps App...................................610
Showing Directions with the Built-In Maps App...................................611
Downloading Maps for Offline Use.....................................................612
Summary...............................................................................612
Chapter 19 Supporting Multiple Cultures and Languages 613
Terminology...................................................................613
Localizability Using Resx Files.............................................................614
Getting Started with Resx Files....................................................615
Working with Resx Files.............................................................615
Dynamic Localizability–Updating the UI When the Culture Changes....618
Localizing Images Using Resx Files......................................................620
The Resx Localizability Sample............................................................621
Controlling the UI Culture from the LocalizabilityViewModel.....622
Displaying Localized Text and Images Within the LocalizabilityView Page..........625
RTL Support..............................................................................629
Summary...................................................................630
Chapter 20 Extending the Windows Phone Picture Viewer 631
Creating a Photos Extras Application...................................................632
Adding Your App to the Extras Menu..........................................634
An Edge-Tracing Extras Application.............................................634
Saving the Image.......................................................................643
Share Menu Extensibility....................................................................645
Adding Your App to the Share Menu...........................................646
A Simple Photo Upload Share Application...................................647
Summary.......................................................................654
Chapter 21 Capturing Images and Video with the Camera 655
PhotoCamera...................................................................656
Building a PhotoCamera App.......................................................658
Using the Silverlight Webcam API.......................................................678
CaptureSourceViewModel............................................................680
Displaying Video in the CaptureSourceView.................................684
Extending the Camera Experience with a Lens.....................................686
Registering as a Lens..................................................................687
Creating Lens Icons...................................................................689
Summary............................................................................689
Chapter 22 Recording Audio with the Microphone 691
Recording Audio with the Microphone................................................691
Creating a Helium Voice App.....................................................692
Summary...................................................................698
Chapter 23 Creating Speech Driven Experiences 699
User Input with Speech Recognition....................................................700
Getting Started with Speech Recognition.....................................700
Overview of Recognition Grammars............................................701
Recognizing Speech Using the Dictation and Web Search Grammars....702
Recognizing Speech with Phrase List Grammars...........................703
Recognizing Speech with SRGS Grammars...................................710
Speech Recognizer Settings.........................................................717
Providing a Custom Speech Recognition UI.................................718
Recognizing Speech in Other Languages......................................721
Launching Your App via Voice Commands..........................................723
Understanding the Structure of the VCD File...............................724
Installing a VCD........................................................................726
Updating a Phrase List Programmatically.....................................731
Making the Phone Speak with Text-to-Speech......................................732
Getting Started with TTS............................................................732
Creating a Speech Synthesis Markup Language File.......................733
Summary......................................................................735
Chapter 24 Unit Testing Apps 737
Automated Testing........................................................738
Unit Testing..............................................................................738
Integration Testing....................................................................739
Coded UI Testing.......................................................................739
Introduction to the Windows Phone Unit Test Framework....................739
Creating a Test Project.......................................................................740
Creating a Test Class.......................................741
Tag Expressions.........................................................743
Setting the Tag Expression Programmatically...............................744
Metadata and Assertions..................................................744
TestClass Attribute...................................................................744
TestMethod Attribute.................................................................745
Metadata for Test Initialization and Cleanup................................745
Miscellaneous Metadata.............................................................747
WorkItemTest: The Base TestClass Type......................................751
Verifying Conditions with Assertions..........................................751
Verifying Collection Conditions with CollectionAssert...............752
Verifying String Conditions with StringAssert............................752
Hiding the Expressions Editor.....................................................752
Testing Multiple Assemblies........................................................753
Testing Nonpublic Members.......................................................753
A Testable Chat Client.......................................................................754
Building the View......................................................................758
Code Driven UI Testing..............................................................760
Using Automation Peers to Manipulate UI Elements at Runtime....763
Inversion of Control (IoC)..................................................................765
A Custom IoC Container and DI Framework................................766
Testing Trial Conditions.....................................................................767
Abstracting the LicenseInformation Class...................................767
Testing with Launchers and Choosers..................................................769
Summary............................................................................771
Chapter 25 Manage Payment Instruments Using Wallet Extensibility 773
Introducing the Wallet Hub................................................................774
Required Capabilities for Wallet Integration.........................................775
Storing Payment Instruments in the Wallet..........................................775
Overview of the Payment Instruments Sample App......................777
Keeping Payment Instruments Up-To-Date with a Background Agent...................................................................789
Storing Membership Information in the Wallet....................................792
Storing Deals in the Wallet.................................................................796
Keeping Deals and Membership Information Up-to-Date with a Background Agent.........................................................802
Summary......................................................................804
Part IV Building Data Driven Apps
Chapter 26 Validating User Input 805
Defining Input Validation..................................................................805
Syntactic Validation...................................................................806
Semantic Validation...................................................................806
Input Validation Using Property Setters...............................................806
Validation Class........................................................................809
Critical Exceptions.....................................................................809
Binding Errors...........................................................................809
Defining Validation Visual States in Windows Phone............................810
Validating a TextBox as the User Types........................................815
Performing Group Validation.....................................................818
Displaying Error Details.............................................................820
Property Setter Validation Limitations.........................................823
Asynchronous and Composite Validation............................................824
A Reusable Implementation of the NotifyDataErrorInfo Interface.................................................................................825
Provisioning for Asynchronous or Synchronous Validation...........827
Asynchronous Validation of All Properties...................................833
An Example of Asynchronous Input Validation............................836
Detecting a Change of Data Context...........................................840
Adding INotifyDataErrorInfo Support to the ValidationSummary Control......................................................842
Incorporating Group Validation..................................................844
Summary........................................................................847
Chapter 27 Communicating with Network Services 849
Network Service Technologies.............................................................850
Monitoring Network Connectivity......................................................850
Connection Priorities.................................................................850
Introduction to OData.......................................................................855
Consuming OData.............................................................................855
OData URI Structure..................................................................856
Generating an OData Proxy........................................................858
OData Query Options................................................................858
Using an OData Proxy........................................................................860
Building an eBay OData Consumer Application....................................862
Creating an OData Wrapper.......................................................862
EbaySearchViewModel Class........................................................864
EbaySearchView Page.................................................................867
Fetching Data When the User Scrolls to the End of a List......................871
Extending OData Entity Classes..................................................874
Simulating Real-World Conditions with the Simulation Dashboard........876
Moderating Data Usage with Data Sense..............................................877
Using the Data Sense API...........................................................877
Summary..............................................................................879
Chapter 28 Preserving App State and Settings 881
Understanding Managed Storage.........................................................882
Working with Files and Directories......................................................883
Introducing the .NET Isolated Storage API....................................884
Introducing the WinPRT Windows Storage API............................887
Measuring the Amount of Available Free Space............................888
Application Settings...................................................................888
Abstracting IsolatedStorageSettings.................................................889
Building an Automatic State Preservation System..................................890
Customizing ViewModel State Preservation..................................892
Automatic State Preservation Inner Workings...............................893
Unwinding a Property Lambda Expression...................................901
Creating Property Accessor Delegates...........................................902
Summary........................................................................903
Chapter 29 Storing App Data in a Local Database 905
SQL Server Compact.........................................................906
Deployment of Local Databases...........................................................906
LINQ to SQL on the Phone.................................................................908
LINQ to SQL Platform Differences.......................................................909
Getting Started with Local Databases...................................................909
Code-First Data Model Creation..................................................909
Sample Twitter Timeline Viewer..........................................................910
Using the Column Attribute.........................................................912
Data Context Change Tracking...................................................915
TwitterUser Class.....................................................................915
Multiplicity and the Association Attribute..................................917
Twitter DataContext..................................................................918
Database Utilities.......................................................................919
Connection Strings....................................................................920
Leveraging a Custom Twitter Service...........................................924
Gathering the User’s Credentials with the Sign-In View................929
Viewing Tweets with the Timeline View......................................932
Viewing a Local Database Schema.......................................................937
File Explorers for Isolated Storage................................................938
Viewing and Modifying an SQL CE Database File.........................940
Database-First Using SqlMetal.............................................................942
Deploying a Database to Isolated Storage..........................................943
Abstracting the Navigation Service......................................................946
Observing LINQ to SQL Queries with a Custom Log.............................948
Updating a Database Schema................................................951
AddColumn.................................................................................952
AddTable...................................................................................952
AddIndex...................................................................................954
AddAssociation.........................................................................955
Schema Versioning....................................................................957
Mapping an Inheritance Hierarchy......................................................958
Concurrency.....................................................................................962
ColumnAttribute.UpdateCheck...................................................965
Summary............................................................................966
Chapter 30 Auto-Launching with File and Protocol Associations 967
Understanding File and Protocol Associations......................................968
A Note About the Sample...................................................................968
Auto-Launching with a File Extension Association................................968
Registering a File Association......................................................968
Receiving a File Launch Request..................................................970
Launching a File........................................................................973
How File and Protocol Associations Affect the User Experience..............976
Auto-Launching with a Protocol Association........................................977
Registering for a Protocol Association..........................................977
Receiving a Protocol Launch Request...........................................977
Launching a Protocol URI..........................................................979
Reserved Protocol Names............................................................981
Launching Built-In Apps.....................................................................981
Summary..............................................................................982
Chapter 31 Extending the Search Experience 983
Understanding Quick Cards................................................................983
Configuring Your App for Search Integration.......................................985
Configuring the Application Manifest.........................................985
Customizing Captions via the Extras.xml File..............................987
Defining a Quick Card Target Page..............................................989
Creating a Landing Page to Display Quick Card Information.................994
App Instant Answer...........................................................................996
Summary....................................................................................996
Part V Multitasking
Chapter 32 Conducting Background Activities with Scheduled Actions 997
Background Tasks................................................................998
Scheduled Notifications......................................................................998
Alarm Registration...................................................................1001
Alarm Sample..........................................................................1002
Reminder Registration..............................................................1005
Reminder Sample....................................................................1006
Scheduled Tasks.....................................................................1010
Background Agent Types..........................................................1011
Using Scheduled Tasks.............................................................1015
To-Do List Scheduled Task Sample............................................1019
Updating Tiles Using a Scheduled Task Agent............................1035
Scheduled Task API Limitations................................................1036
Using a Mutex to Access Common Resources Safely.............................1038
Summary..........................................................................1041
Chapter 33 Performing Background File Transfers 1043
Background Transfer Requests............................................1043
Handling App Termination and Resubscription to Transfer Events......1048
Background File Transfer Sample Code..............................................1048
Using URL Rerouting with a WCF Service..................................1049
Retrieving the User’s Windows Live Anonymous ID...................1050
TodoListViewModel..................................................................1052
Backing Up the Local Database.................................................1052
Restoring the Local Database....................................................1055
Summary......................................................................1058
Chapter 34 Coordinating Background Audio Playback 1059
Background Agent Recap..................................................................1059
Background Audio Overview.............................................................1060
Background Audio Player..................................................................1060
Representing Audio Files with the AudioTrack Class............................1062
Creating a Custom Audio Player Agent..............................................1063
AudioPlayerAgent Sample................................................................1064
AudioPlayerAgent Virtual Methods...........................................1066
Controlling Background Audio from Your Foreground App.........1070
Audio Streaming Agents...................................................................1076
Using a MediaStreamSource to Play Back an Assembly Resource...1078
Summary........................................................................1079
Bibliography 1081
9780672336898 TOC 4/18/2013
| Erscheint lt. Verlag | 30.5.2013 |
|---|---|
| Verlagsort | Indianapolis |
| Sprache | englisch |
| Maße | 179 x 230 mm |
| Gewicht | 1468 g |
| Themenwelt | Informatik ► Software Entwicklung ► Mobile- / App-Entwicklung |
| Informatik ► Weitere Themen ► Smartphones / Tablets | |
| ISBN-10 | 0-672-33689-8 / 0672336898 |
| ISBN-13 | 978-0-672-33689-8 / 9780672336898 |
| Zustand | Neuware |
| Haben Sie eine Frage zum Produkt? |
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