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iosswifthaptic-feedback

Cannot run Apple's Haptic Sampler (sample project from Apple's website)

I downloaded a sample project from here(haptic sampler) and I cannot run because of several issues. I solved signing identifier.

The error messages say:

  • ~/PlayingACustomHapticPatternFromAFile/HapticSampler/ViewController.swift:66:19: Type 'CHHapticEngine.StoppedReason' has no member 'gameControllerDisconnect'

  • ~/PlayingACustomHapticPatternFromAFile/HapticSampler/ViewController.swift:68:19: Type 'CHHapticEngine.StoppedReason' has no member 'engineDestroyed'

if I delete these parts, another error says:

  • Thread 1: Fatal error: Unexpectedly found nil while implicitly unwrapping an Optional value

Here are my questions.

  1. Do same issues happen to you?

  2. How can I fix this problem?

Here's my environment specification.

  • macOS Catalina 10.15.6
  • Xcode 11.6
  • iPhone 7 iOS 13.6

enter image description here

Solution

  • The problem is that the enum cases

    .gameControllerDisconnect

    And

    .engineDestroyed

    Were introduced in iOS 14, Xcode 12 beta. But you are running an earlier version so, as the error message says, they don’t exist.