Building iOS applications with Xamarin and C#
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Slides from my Detroit Dev Day talk on Building iOS applications with Xamarin and C#
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Building iOS applications with Xamarin and C#
- 1. Building iOS applications with Xamarin and C# • Microsoft and Xamarin MVP • @Tinytoot | www.tomwalker.codes • Tom Walker
- 2. Meet Tom Walker | @Tinytoot • Founder @LdnOntNetDevs | LondonNetDevelopers.ca • Windows Platform Development MVP • Xamarin MVP • Developer for 15+ years now focusing on mobile and web frontend – Worked with large enterprises, startups and software companies – Design & build internal enterprise and consumer facing software
- 3. Objectives • Define the Problem • How Xamarin Works • Development Environment • iOS Application Life Cycle • Demo - Bing Images
- 5. Silo Approach Build Apps Multiple Times • Multiple Teams • Multiple Code Bases • Different toolsets
- 6. Xamarin’s Unique Approach • Native User Interface • Native Performance • Shared code across platforms • C# & .NET Framework • Full API Coverage
- 8. Xamarin.iOS does full Ahead Of Time (AOT) compilation to produce an ARM binary for Apple’s App Store. Native Performance Xamarin.Android takes advantage of Just In Time (JIT) compilation on the Android device.
- 9. .NET + Windows APIs
- 10. .NET + iOS APIs | 100% Coverage
- 11. Always Up-to-Date Track record of offering same-day support: iOS 5, iOS 6, iOS 7, iOS 7.1, iOS 8 Full support for: • Google Glass • Android Wear • Amazon Fire TV • More!
- 12. Distribute Everywhere A Xamarin app can be distributed everywhere
- 13. Xamarin Studio PC or Mac Visual Studio Plugin VS 2010 and Higher Development Environment
- 14. Create native iOS, Android, Mac and Windows apps in Visual Studio and C#
- 15. Visual Studio Integration A single solution: • iOS • Android • Windows Phone • Windows Store Leverage the entire Microsoft ecosystem: • ReSharper • Team Foundation Server • Your favorite code coverage and profiling tools
- 17. Visual Studio Integration Debug to: • Emulators • Devices Integrated into toolbar • Status • Logs • List of devices Just Click Start Debugging!
- 18. Xamarin Designer for iOS • World’s first iOS Designer available in Xamarin Studio and Visual Studio • Follows familiar Visual Studio designer idioms • Supports all UIKit elements • Edit custom and 3rd party components • Live preview of changes to properties
- 19. iOS App Settings
- 20. Xamarin Component Store Build Apps Faster • Add high quality pre-built app components directly from Visual Studio and Xamarin Studio • Beautiful cross-platform UI controls, cloud services and enterprise backend integrations are just a few clicks away
- 21. iOS Application Lifecycle & Structure
- 22. Background Foreground Not Running Inactive Active Backgrounded Suspended Xamarin.iOS notifies us of all these states using various overrides in AppDelegate.cs
- 25. Model-View-Controller (MVC) Model View Controller Performs Action Changes ModelUpdates UI User Sees Changes
- 26. Demo
- 27. Recap • Define the Problem • How Xamarin Works • Development Environment • iOS Application Life Cycle • Demo - Bing Images
- 28. Thanks you Questions? • Microsoft and Xamarin MVP • @Tinytoot | www.tomwalker.codes • Tom Walker
Editor's Notes
- Xamarin Introduction!
- Multiple Teams Multiple Code Bases Expensive & Slow Positive = Great apps delivered to user’s platform Negative = Development hampered by multiple code bases & fragmentation
- UI build natively per platform, leveraging C# C# + XAML C# + XML C# + XIB One shared app logic code base, iOS, Android, Mac, Windows Phone, Windows Store, Windows
- There is no compromise on performance. Xamarin apps look and feel native because they are native.
- If you have ever developed for a Windows Platform before these .NET namespaces might look familiar. However, if we go to a new platform such as Windows Phone or Store we have a new SDK to use and a new set of namespaces.
- You can think of iOS and Android development the same with Xamarin. You can see we have all of our .NET namespaces and libraries, but Xamarin give us 100% api coverage of each iOS API in it’s SDK that we access view C#.
- Apple has a developer preview where Xamarin has alphas ready. Google does not offer this. Android versions are usually 4 to 8 weeks out for a stable release, but alphas and betas are usually earlier. Xamarin realizes how important having iOS ready because within 24 hours a large portion of iOS users upgrade Android on the other hand is much different. After 4 months on the market Android 4.4 only had 1% adoption
- Compiles down to APK or IPA that you can distribute anywhere, any store. Or even internal enterprise
- Xamarin Studio PC -> Android Mac -> iOS, Android, Mac Visual Studio: iOS, Android Windows
- Additionally Supports Visual Studio 2010, 2012, & of course 2013 Additionally support desktop apps on Windows: WPF, ASP.NET, Silverlight, WinForms! The same Solution & Projects open in BOTH Xamarin Studio and Visual Studio!
- Connect to Mac build host for iOS development Show list of all iOS devices and Simulators to debug on Shows all Android devices and emulators X86, Arm, Genymotion.. Take advantage of all debugging power of VS
- Add high quality pre-built app components directly from Visual Studio. Includes dozens of beautiful UI controls and web services – adding a theme or a 3rd party library is just a few clicks away Complements existing .NET NuGet ecosystem Differentiator: focus on UI controls and themes – we are making developers better designers across all platforms
- Let’s talk a bit about C# and why it is awesome.
- Demo time if so desired
- Let’s talk a bit about C# and why it is awesome.
- Xamarin Introduction!