cross-platform mobile development in visual studio
TRANSCRIPT
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XamarinMobile Cross Platform Development in Visual Studio
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bryan costanichem: [email protected]: @bryancostanichslides: slideshare.net/bryancostanich/crossplatform-mobile-development-in-visual-studio
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Sample Codegithub.com/xamarin/mobile-samples/TaskyPro
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Xamarin Platform
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One Language + FrameworkLINQLambdasTask Parallel Library (TPL)Compile-Time ChecksGarbage Collection
C#º
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Native Perf. + UXCompiles Down to Native CodeNot InterpretedAll Native UX ControlsFull Platform SDK AccessiOS: Selectors/Obj-C RuntimeAndroid: JNIFast Enough for Games
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Reuse StoryC# LibrariesObj-C Bindings + Binding Projects.jar Bindings + Binding ProjectsC via pInvokeC++ via Cxxi
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Other PlatformsWindows - via .NETMac - via Xamarin.MacLinux - via MonoEtc.
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Community + SupportHuge C# CommunityStackOverflow.comIRC + chat.xamarin.comGreat Support
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General XPlat Considerations
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Design Platform-Specific UX
UX in iOS != Android != Windows PhoneUX Metaphors are Different: Navigation Controller vs. Back ButtonWrite-Once, Run-Anywhere is ProblematicUsers Expect Native UX
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Choose Device TargetsiPhone != iPadBeware Android FragmentationForm Factor + Capability Differences Inform UXPro-Tip: Minimize Targets
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Building an X-Plat Architecture
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ArchitectureLayersSeparation of ResponsibilityEncapsulationCore Code Sharing
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VS Project/Solution Setup
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Code Sharing - Linking vs. PCLPortal Library Projects - Take a Lot of WorkGreat Discussion Here: http://forums.xamarin.com/discussion/28/challenges-thoughts-loves/p1Takeaway: PCL is clean, but difficult to implementLinking is less “clean” but simplerOur Recommendation Now: File Linking for Most ProjectsWalkthrough Here: Linkingº
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WP7 + AndroidNew Blank Solution: "[AppName]"New C# Lib Project: "[AppName].Core"Test Project: “[AppName].Core.Tests”New Mono for Android Project: “[AppName].Droid”New WP7 Project "[AppName].WP7"
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iOS - Visual Studio 2010VS MonoTouch Plugin: https://github.com/follesoe/VSMonoTouch
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iOS - Visual Studio 2012VS MonoTouch Plugin: https://github.com/ste8/VSMonoTouchVisual Studio SDK (to build plugin): http://msdn.microsoft.com/en-us/library/bb166441(v=vs.80).aspx
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iOS - Plugin ConfigCreate iOS Project (on Mac): "[AppName].iOS"Copy to Solution Directory or Synch in SourceManually Edit iOS .csproj File, add Refs ->
.csproj edit:<ItemGroup> <Reference Include="mscorlib" /> <Reference Include="monotouch" /> <Reference Include="System" /> <Reference Include="System.Xml" /> <Reference Include="System.Core" /> </ItemGroup>
Remove CoreLib Reference ->
Limitations: Can Build, but No Designer, or Deployment (must use Mac for now**)
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Shared Code LinkingTwo Linking Options: Auto or ManualAuto: Use Project Linker VS Add-In Add a project link, voila. (2010 + 2012)Manual: Link Files Add Files as Links
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Shared Data + Data Access Layer
SQLite on iOS + Android, C# SQLIte on WP7: http://code.google.com/p/csharp-sqlite/SQLite.NET ORMUse Generics for CRUD Convenience Methods: TaskDatabase.cs
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Platform AbstractionsHandling Divergence and Taking Advantage of Platform Features
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Conditional CompilationPre-Defined Symbols: #if __ANDROID__ #if WINDOWS_PHONE #if SILVERLIGHTCan Add Additional in Build Settings
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Class AbstractionSometimes, You Wanna Provide Different Implementations for Different PlatformsPartial ClassesPartial MethodsInterfaces
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Xamarin.MobileXPlat API AbstractionsXamarin.com/MobileAPI
Contacts GeolocationCompass + Accelerome
terCamera
Notifications
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Other XPlat LibsMonoCross - http://code.google.com/p/monocross/MvvmCross - https://github.com/slodge/MvvmCrossVernacular - https://github.com/rdio/vernacularMonoGame - http://monogame.codeplex.com/
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Q+A