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WWDC 2015

Going Social with ReplayKit and Game Center

This session introduces with new game center features and replayKit. For now, we ignore game center as it is less likely to use. However, ReplayKit is sure the best way to get videos of UAT testing and aid developers to fixed issues.

Quick code snippnets for using replayKit

ReplayKit

  • Record Audio and Visual
  • Ability to Add Voice commentary
  • HD quality
  • Privacy safeguard (Record screen & mic / Record Screen / disallow)
  • Available in iOS 9
  • For A7 cpu for up
  • No Direct access of replay video (only via share sheet)

Main functional classes

RPScreenRecorder

  • Start , Stop and discard recording
  • Check ability to record
  • Enable mic for commentary

RPScreenRecorderDelegate

  • if availability changes
  • if recording stops ( due to error)

RPPreviewController

  • preview the recording
  • edit and trim
  • Share

RPPreviewControllerDelegate

  • after view controller dismissal

Demobots (demo project, show other new features as well)

Fine tune the replay videos

Replay Kit may be unavailable

  • Airplay in use
  • TV-out in use
  • Unsupported device(like iPhone 4s iPhone 5)

To solve :

  • use available property to check
  • disable recording UI (like button) if false
  • listen screenRecorderDidChangeAvailability for change

Discard the recording

  • previous recording will be discarded when new recording is started
  • Only one recording at a time
  • discardRecodingWithHandler to run anything when the recording discards.

Show UI when the recording is ongoing- like a mic and REC icon use recording propery and microphoneEnabled to check if the RPScreenRecorder recording has these.

Excluding UI

  • hide elements that are uninteresting
    • only record main window (like recording/ virtual control / pause and menu buttons etc.)
    • use sepearate for those recording UI elements

When to record

  • App Control(embed the recording in logic)
  • User controller(user hit the recording button)