IOS CoreHaptics module for ReactNative.

SoftVibration.swift

//
//  SoftVibration.swift
//  MyTestApp
//
//  Created by Shafayeat Kabir on 5/12/20.
//

import Foundation
import CoreHaptics


@available(iOS 13.0, *)
@objc(SoftVibration)
class SoftVibration: NSObject {
  private var engine: CHHapticEngine!
  private var continuousPlayer: CHHapticPatternPlayer!
  @objc
  func stopVibrationIOS() {
    do {
        try continuousPlayer.stop(atTime: CHHapticTimeImmediate)
    } catch let error {
        print("Error stopping the continuous haptic player: \(error)")
    }

  }
    
  @objc
  func prepareHaptics(){
    guard CHHapticEngine.capabilitiesForHardware().supportsHaptics else {return}
    do{
      self.engine = try CHHapticEngine();
      try engine?.start()
      print("SUCCESS")
    }catch{
      print("there was an error engine")
    }
  }
  
  
  @objc(startVibrationIOS:)
  func startVibrationIOS(duration: Int) -> Void {
    print("Duration \(duration)")
    
    var events = [CHHapticEvent]()
    let intensity = CHHapticEventParameter(parameterID: .hapticIntensity, value: 0.3)
    let sharpness = CHHapticEventParameter(parameterID: .hapticSharpness, value: 1)
    let event = CHHapticEvent(eventType: .hapticContinuous, parameters: [intensity, sharpness], relativeTime: 0, duration: TimeInterval(duration))
    events.append(event)
    do{
      let pattern = try CHHapticPattern(events: events, parameters: [])
      continuousPlayer = try engine?.makePlayer(with: pattern)
      try continuousPlayer?.start(atTime: 0)
    }catch{
      print("Failed to play: \(error.localizedDescription)")
    }
  }

  @objc
  static func requiresMainQueueSetup() -> Bool {
    return true
  }
}

//SoftVibration.m

#import <Foundation/Foundation.h>
#import "React/RCTBridgeModule.h"

@interface RCT_EXTERN_REMAP_MODULE(RNHapticsIOS,SoftVibration, NSObject)
  RCT_EXTERN_METHOD(stopVibrationIOS)
  RCT_EXTERN_METHOD(prepareHaptics)
  RCT_EXTERN_METHOD(startVibrationIOS:(NSInteger)duraion)

@end