Android Lollipop and Material Design
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James Montemagno, a Developer Evangelist at Xamarin, presents the major features of Android Lollipop, highlighting Material Design, new runtime, and UI enhancements. Key topics include Material Design concepts, the introduction of new UI components like CardView and RecyclerView, as well as notifications and animations introduced in Lollipop. The presentation emphasizes the importance of using the AppCompat library for compatibility with earlier Android versions.
Android Lollipop and Material Design
- 1. James Montemagno Developer Evangelist, Xamarin @JamesMontemagno Sweeten Up Your Android Apps with Lollipop and Material Design
- 4. Android Lollipop Major Features § ART Runtime! § Material Design! § Widgets, Views, and Shadows! § Animations! § Notifications! § Compatibility!
- 5. Material Design Android L Major Features google.com/design/spec/material-‐design/introduction.html Bold, graphic, intentional Material metaphor Motion provides meaning
- 6. § Brand new style for applications. • Theme.Material • Theme.Material.Light • Theme.Material.Light. DarkActionBar Material Design
- 7. § colorPrimary – App Branding Color § colorPrimaryDark – Status bar & contextual bars § colorAccent – Theme UI Controls (﴾ie. checkbox)﴿ Material Design – Color Palette
- 8. Material Design – Color Palette
- 9. Let’s Look
- 10. § AppCompat v21 to the Rescue!! § New Themes § New Controls § New Support Libraries Lollipop Only?
- 11. § Brand new style for applications. • Theme.AppCompat • Theme.AppCompat.Light • Theme.AppCompat.Light. DarkActionBar AppCompat Material Design
- 12. App Compat Material Design – Color Palette
- 13. § Google Design Guidelines – http://www.google.com/design/spec/style/color.html#color-‐color-‐palette Find Your Theme
- 14. § Material Palette materialpalette.com Find Your Theme
- 15. § Also use: – SupportActionBar Update Activity
- 16. § Extendable & Customizable ActionBar – Inherits from ActionBar § You can have multiple in your Layout now! § Uses the same menu items! § Works with AppCompat Goodbye ActionBar, Hello Toolbar
- 18. Step 2: Insert into Activity axml
- 19. Step 3: Update ActionBarActivity
- 20. Step 4: Update Theme
- 21. Optional: Additional Toolbars Add into axml & FindViewById:
- 23. Let’s Look
- 24. Xamarin.Forms?
- 25. Kind of J h6ps://github.com/jamesmontemagno/Hanselman.Forms
- 27. Remove Icon
- 28. Update Hamburger Button MasterDetailPage -‐Set Icon to “slideout.png” or whatever you have named it -‐Add default and v21 drawables
- 29. Let’s Look
- 30. Views and Shadows § Palettes § CardView § RecyclerView § Elevation Android Lollipop Major Features
- 31. § Extract Prominent Colors from Image § 6 Palettes Generated Generate a color pallet from an image Material Design –Palettes https://www.nuget.org/packages/Xamarin.Android.Support.v7.Palette/
- 32. § Bitmaps as alpha maps § android:tint=“@color/blue” Material Design – Drawable Tint
- 33. CardView Wrap any view in a CardView https://www.nuget.org/packages Xamarin.Android.Support.v7.CardView/
- 34. RecyclerView https://www.nuget.org/packages/Xamarin.Android.Support.v7.RecyclerView/ § High speed efficient ListView § Includes layout manager for positioning items § Default animations for common item operations
- 35. Elevation § android:elevation=“2dp” § View.SetTranslationZ method § Z = elevation + translationZ
- 36. Demo
- 37. Animations § Touch Feedback § Reveal § Activity Transitions Android Lollipop Major Features
- 40. Surface reaction Animation Material response Radial action
- 41. § Default Touch Feedback Animation: RippleDrawable § Set Background to: • ?android:attr/ selectableItemBackground • ?android:attr/ selectableItemBackgroundBorderless § Create custom RippleDrawable using the ripple element Animation – Touch Feedback
- 42. Animation – Reveal § Easily create clipping circles
- 43. § Custom animations for enter and exit transitions of activities • Enter: How views in the activity enter • Exit: How view in activity exit • Shared Elements: How views that are shared between 2 activities animate Animation – Activity Transitions
- 44. Let’s Look
- 45. Notifications § Lock Screen Notifications § Notifications Metadata § Unified Notifications Android Lollipop Major Features
- 46. § Android.App.Notification.Builder.SetVisibility(﴾)﴿ • Private: Shows basic information such as icon, but hides full content • Public: Show the notification's full content • Secret: Show nothing, excluding even the notification’s icon New APIs – Lock Screen Notifications (﴾Android Lollipop)﴿
- 47. § SetCategory(﴾)﴿: Tells the system how to handle notifications when the device is in Do not Disturb § SetPriority(﴾)﴿: Set to Max or High to appear in a small floating window if the sound also has a vibration or sound. § AddPerson(﴾)﴿: Add a list of people to notification. New APIs – Notifications Metadata (﴾Android Lollipop)﴿
- 48. Unified Notifications – Standard and Extended
- 49. Compatibility & More § New APIs § Android Lollipop Small Features § Google Play Services via NuGet Android Lollipop Major Features
- 50. § Material Theme • Only available in Android L Developer Preview o Define theme that inherits from older theme (﴾like Holo)﴿ in res/ values/styles.xml o Define them with same name that inherits from Material in res/values-‐ v21/styles.xml o Set theme as your app’s theme in manifest file New APIs – Compatibility § Layouts • Do not use any of the new XML attributes from Android L Developer Preview, they will not work with previous versions of Android. • You must provide alternative layouts if you wish to use them o L Preview Layouts: res/layout-‐v21/ o Alternative Layouts: res/layout/ o Do avoid duplication of code, define styles in res/values/ o Modify the style in res/values-‐v21/ for new APIs
- 51. § UI Widgets • Support v7: RecyclerView & CardView o Limitations (﴾pre-‐L Preview)﴿: o CardView falls back to programmatic shadows implementation using additional padding o CardView does not clip its children that intersect with rounded corners New APIs – Compatibility § Animations • Following are Android L Developer Preview ONLY: o Activity Transitions o Touch feedback o Reveal animations o Path-‐based animations
- 52. § Camera • Enhanced image and video capturing. Capture Raw sensor data. § Multi-‐networking • Dynamically scan for available network with specific capability and automatically connect. § BLE Peripheral Mode • Apps that connect to devices such as pedometer or health monitor and transfer data to another BLE device. § Document-‐Centric Recents § Job Scheduler Android L Small Features
- 53. Google Play Services via NuGet § Play Game Services: event –based challenges, saved games, and game profiles § App Indexing API § Google Cast: Media tracks for closed captioning § Wallet: Save to Wallet, geo-‐fenced in-‐store notifications, split tender between wallet & card § Analytics: Measure product impressions/product clicks § Mobile Ads: in-‐app purchase ads § Dynamic Security Provider
- 54. Views § Floating Action Button (﴾FAB)﴿ § Page Slider Android Lollipop – Not Built In
- 57. Demo
- 58. Android Recap • Android Lollipop • Material Design • Views & Animations • Notifications • New Templates – https://visualstudiogallery.msdn.microsoft.com/ bee6442f-‐8f5a-‐4bba-‐8849-‐e380b61e76b0 • AppCompat is your new friend
- 59. § Intro to AppCompat & Toolbar! § http://blog.xamarin.com/android-tips-hello-material-design-v7-appcompat/! § http://blog.xamarin.com/android-tips-hello-toolbar-goodbye-action-bar/! § Android L Documentation! § http://developer.xamarin.com/guides/android/platform_features/android_l/ introduction_to_android_l/! ! § Samples! § http://developer.xamarin.com/samples/android/! Resources
- 60. James Montemagno Developer Evangelist, Xamarin @JamesMontemagno Thank you! Q & A