Xamarin.Forms - Your Complete Mobile Solution
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The document discusses challenges with developing cross-platform mobile apps for iOS, Android and Windows. It presents Xamarin's solutions for building native apps with shared code, including Xamarin.Forms for sharing UI code across platforms using C# and XAML. Xamarin.Forms provides layouts, pages, controls and features like data binding, navigation and animations, allowing developers to write and maintain shared app code.
Xamarin.Forms - Your Complete Mobile Solution
- 2. DESIGN –DEVELOP -‐ INTEGRATE TEST MONITOR LEARN
- 3. iOS WindowsAndroid Objective-‐C Xcode C# Visual Studio Java Android Studio No shared code • Many languages & development environments • Multiple teams
- 4. App Generator Lua Javascript Actionscript HTML+CSS Limited native API access • Slow performance • Poor user experience
- 5. Shared C# codebase • 100% native API access • High performance iOS C# UI Windows C# UIAndroid C# UI Shared C# Mobile
- 6. 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
- 7. Xamarin.iOS does full Ahead Of Time (AOT) compilation to produce an ARM binary for Apple’s App Store. Xamarin.Androidtakes advantage of Just In Time (JIT) compilation on the Android device. .NET C# Compile and Link .APK Bindings Runs Natively IL + JIT
- 9. ✓ 40+ Pages, layouts, and controls (Build from code behind or XAML) ✓ Two-‐way data binding ✓ Navigation ✓ Animation API ✓ Dependency Service ✓ Messaging Center Shared C# Backend Shared UI Code
- 10. <?xml version="1.0" encoding="UTF-‐8"?> <TabbedPage xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" x:Class="MyApp.MainPage"> <TabbedPage.Children> <ContentPage Title="Profile" Icon="Profile.png"> <StackLayout Spacing="20" Padding="20" VerticalOptions="Center"> <Entry Placeholder="Username" Text="{Binding Username}"/> <Entry Placeholder="Password" Text="{Binding Password}" IsPassword="true"/> <Button Text="Login" TextColor="White" BackgroundColor="#77D065" Command="{Binding LoginCommand}"/> </StackLayout> </ContentPage> <ContentPage Title="Settings" Icon="Settings.png"> <!-‐-‐ Settings -‐-‐> </ContentPage> </TabbedPage.Children>
- 11. Which Xamarin approach is best for your app? Xamarin.Forms is best for: Xamarin.iOS / Xamarin.Android is best for: • Data entry apps • Prototypes and proofs-of-concept • Apps that require little platform-specific functionality • Apps where code sharing is more important than custom UI Learn more: xamarin.com/forms Learn more: xamarin.com/platform • Apps that require specialized interaction • Apps with highly polished design • Apps that use many platform-specific APIs • Apps where custom UI is more important than code sharing
- 12. Layouts Pages Stack Absolute Relative Grid ContentView ScrollView Frame Content MasterDetail Navigation Tabbed Carousel
- 13. ActivityIndicator BoxView Button DatePicker Editor Entry Image Label ListView Map OpenGLView Picker ProgressBar SearchBar Slider Stepper TableView TimePicker WebView EntryCell ImageCell SwitchCell TextCell ViewCell
- 15. Embed Custom Views Anywhere Not only are Xamarin.Forms pages mixable with custom screens, you can embed custom views built directly against Xamarin.iOS and Xamarin.Android into Xamarin.Forms pages. Call Platform APIs via Shared Services Need platform-‐specific functionality within a Xamarin.Forms page, such as querying the accelerometer? We’ve included services that quickly and easily abstract platform-‐specific API calls to keep you writing as much shared code as possible. Easy migration to the Xamarin Platform When your native platform integration requirements outgrow Xamarin.Forms, your shared code is easily migrated to Xamarin.iOS and Xamarin.Android using the full Xamarin platform.
- 16. 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
- 18. Common API
- 20. 5 20 20 35 6 OS versions Devices Languages Locales Screen sizes 9 19K+ 39 57 27 15 6 OS versions Distinct devices Languages Locales Screen sizes Manufacturers Screen configurations
- 23. Thousands of iOS and Android APIs Public web APIs Backend integrations Third party libraries Memory, CPU and network constraints
- 24. Free 30 Day Trial -‐ xamarin.com/university Unrivaled Mobile Development Training Live unlimited mobile development training from mobile experts, in your time-‐zone, on your schedule, and as often as you'd like.