Cross Platform Mobile Development with Xamarin
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Xamarin allows developers to share C# code across platforms while building fully native mobile applications for iOS, Android, and Windows. It uses Xamarin.Forms to define user interface elements in a shared codebase while rendering these interfaces natively on each device. Developers can access native platform features and APIs through a common API to build cross-platform mobile apps with high performance.
Cross Platform Mobile Development with Xamarin
- 5. iOS WindowsAndroid Objective-C Xcode C# Visual Studio Java Android Studio No shared code • Many languages & development environments • Multiple teams
- 6. App Generator Lua Javascript Actionscript HTML+CSS Limited native API access • Slow performance • Poor user experience
- 7. Shared C# codebase • 100% native API access • High performance iOS C# UI Windows C# UIAndroid C# UI Shared C# Mobile
- 8. Traditional Xamarin Approach With Xamarin.Forms: More code-sharing, all native iOS C# UI Windows C# UIAndroid C# UI Shared C# Backend Shared UI Code Shared C# Backend
- 9. Xamarin.iOS does full Ahead Of Time (AOT) compilation to produce an ARM binary for Apple’s App Store. Xamarin.Android takes advantage of Just In Time (JIT) compilation on the Android device.
- 12. Xamarin is included in Visual Studio
- 14. • Create UI with drag & drop simplicity • Target multiple screen sizes, resolutions and Android versions • Layouts saved in standard Android XML files
- 15. • Multi-Touch Enabled • Super Fast • Rotate, screenshots, location changes, and more! http://bit.ly/hyperv-android
- 16. • Follows familiar Visual Studio designer idioms • Supports all UIKit elements • Edit custom and 3rd party components • Live preview of changes to properties
- 17. • Multi-Touch Enabled • Pressure Sensitive • Super Fast • Rotate, screenshots, location changes • Never leave VS
- 23. Mac iOS Android Windows Phone Calca iCircuit Touch Draw 86% 14% 72% 28% 77% 23% 70% 30% 61%39% 94% 6% 88% 12% 76% 24% 90% 10%
- 24. Page is an abstract class used to define a single screen of content. Derived types provide specific visualization/ behavior Page that navigates between children using tab bar Content Master Detail Navigation Tabbed Carousel Page allowing swipe gestures to switch between children
- 25. View is the base class for all visual controls, most standard controls are presents Label Image SearchBar Entry ProgressBar ActivityIndicator Button Slider OpenGLView Editor Stepper WebView DatePicker Switch ListView BoxView TimePicker Frame Picker
- 26. Platform defines a renderer for each view that creates a native representation of the UI Button button = new Button { Text = "Click Me!" }; UI uses a Xamarin.Forms Button Platform Renderer takes view and turns it into platform-specific control Android.Widget.Button UIButton System.Windows.Button
- 29. What if we didn’t have to write this code? What if we could access it from shared code? UI+APIs UI + APIsUI + APIs Battery GPS Lights Notifications Settings Text To Speech Battery GPS Lights Notifications Settings Text To Speech Battery GPS Lights Notifications Settings Text To Speech
- 31. Common API
Editor's Notes
- #5: So we know what we want how do we get there? Let’s talk about the state of mobile development.
- #6: Multiple Teams Multiple Code Bases Expensive & Slow Positive = Great apps delivered to user’s platform Negative = Development hampered by multiple code bases & fragmentation
- #7: Unhappy Users Unhappy Developers Increase in Abandoned Apps Limited to what is implemented
- #12: Coming up next is bubbles
- #19: Xamarin Studio on Mac offers: Android, iOS and Mac development World Class IDE with great features: Code Analysis Upload to Test Flight Git & Subversion Integration Code Completion Code Navigation Easy transition from Visual Studio The same Solution & Projects open in BOTH Xamarin Studio and Visual Studio!
- #33: Xamarin is your complete mobile solution. Xamarin Platform is usually what you hear about which is building native iOS, Android, Mac, and Windows Apps all in C# However Xamarin offers a wide range of products for developers to go mobile including Test Cloud, Hockey App, and a way to learn all of mobile with University.