windows phone multitasking & live tiles
Post on 23-Feb-2016
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Windows Phone Multitasking & Live Tiles
Larry LiebermanProduct Manager, Windows Phone DeveloperMicrosoft Corporation
Key takeaways for Windows Phone
Broad set of multitasking featuresBalances user experience with phone healthFamiliar .NET programming model
Windows Phone Multitasking Block Diagram
Resource Management
Built-in services
3rd-party services
Alarms & Reminder
sFile
TransfersBackground Audio
Periodic Execution
Fast App Switching
Harmony
UX
Health Battery-Friendly
Network-Aware
Hardened Services
Delightful and Responsive UX
Never Regret Installing Apps
Integrated Experiences
Multitasking and Phone Health
Monitor resource usage
Align with system and user activity
Balance foreground and background
Processing on demand
New OS services
demo
Fast Application Switching
Fast App Switching Support
Keeps user in control
Compatible with 7.0
apps
Suspends application
threads
Load or refresh state*
Compileand test
for Mango
Reattach resources*
* Only if needed.
OS
Application Lifecycle
Save state but do not discard it
Reload / refresh state only if needed
Application is resident in memory; system detaches resources and pauses threads
Tombstoned
DeactivatedDormant
RunningActivated
Demo
Alarms and Reminders
Alarms and Reminders - Overview
Same UX as built-in alarms and remindersDeep link back into the applicationEfficient implementation based on OS services
Demo
Background Transfer Service
Background Transfer Service - Limits
1 2 3 4 5
Background Transfer Service - Limits
5 MB
20 MB
20 MB
100 MB
Unlimited
Background Transfer Service - Overview
Balances functionality with phone health and user costSimplifies download management in appsEfficient implementation based on OS servicesPersists across reboots
Demo
Live Tiles
Live Tiles - Overview
Pin multiple tiles to StartNew flip animation with additional contentUpdate three ways: push, schedule, or local API
demo
Background Agents
End-to-End Architecture
System Service
sISO StoreCloud
DifferentProcesses
LogicUX
MyApp.dll
Application OS
Logic
MyAppAgent.dll
Single App
DeveloperMyApp Solution
MyApp Project
MyAppAgent Project
WMAppManifest
code
Background Agents
Background Agents – Basic Functionality
Allowed RestrictedTile updatesToastsLocationNetworkingStorageMost framework APIs
MicrophoneCameraSensorsGraphicsAudioAll XNA libraries
Background Agents – Two Flavors
Periodic Agent Resource-Intensive Agent
Runs every 30 minutesAny network connectionRuns for 25 secondsUsed for location, data sync, etc.
Runs on external powerNon-cell network connectionRuns for 10 mins, recurringUsed for daily tasks, large data syncs, etc.
...when battery level is > 20% and battery saver is not on ...when battery level is > 90%
Background Agents - Overview
Separate resource-constrained processManaged by the OS to maintain phone healthUser stays in control via system settings
Familiar .NET programming model
demo
Background Audio
Background Audio Architecture
Zune Playbac
kISO StoreCloud
UXMusicApp.dll
LogicMusicAgent.d
ll
20/30
West End Girls Pet Shop Boys
All playback logic lives in the agent!
code
Background Audio
Background Audio Playback - Overview
HTML 5 Audio Playback in Internet ExplorerTrack-based playback for standard formatsBuffer-based playback for custom formatsGuaranteed resources for continuous playback
Recap
Broad set of multitasking featuresBalances user experience with phone healthFamiliar .NET programming model
Health
UX
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Code Sample Get-Process –computername srv1
class TechEdProgram{
public static void Main(){
System.Console.WriteLine("Hello, Tech·Ed!");}
}
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