CarPlay Audio and Navigation Apps

WWDC 2018

What’s Special About CarPlay ?

• Touch screens, rotary knob, and touchpad inputs
• Left and right hand drive
• Night interface style
• Screen sizes
• Automaker

• Messaging

• VoIP calling
• Audio ( new )

• Navigation ( new )

• https://developer.apple.com/carplay/

Audio Apps in CarPlay

• Template based
• Works with all CarPlay systems
• Uses existing MediaPlayer APIs

CarPlay Audio App APIs

MPPlayableContent

Improvements in iOS 12 ( new )

• Improved performance in MPPlayableContent
• Faster startup sequence
• Smoother animations
• Better communication to your app

Best Practices

• Call reloadData() only when needed ⚠️
• Use beginUpdates( ) and endUpdate( )
• Keep an internal representation of the data source to optimize performance

Don’t Miss a Beat ! ⚠️

Account for these common scenarios

• Screen locked with passcode
• Unreliable network connectivity

Anticipate the Hits

Utilize beginLoadingChildItems( ) to initiate fetching content

Greatest Hits

• Use MPPlayableContent to populate the CarPlay screen
• Anticipate user scenarios while driving
• Run your audio apps in CarPlay!

Navigation Apps in CarPlay

• Built with CarPlay framework
• Template based
• Supports all CarPlay systems

Map Template

Key responsibilities

• Panning
• Navigation Alerts

• Guidance