checkAuthorisationForCharacteristicType

AuthChecks

-(BOOL)checkAuthorisationForCharacteristicType:(HKCharacteristicType *)characteristicType{
    
    HKAuthorizationStatus authStatus = [self.store authorizationStatusForType:characteristicType];
    
    if(authStatus == HKAuthorizationStatusSharingAuthorized){
        return YES;
    }else{
        return NO;
    }

}

    //Check auth is avilable for HKCharacteristicType
    HKCharacteristicType *dateOfBirthType = [HKCharacteristicType characteristicTypeForIdentifier:HKCharacteristicTypeIdentifierDateOfBirth];
    
    if([self checkAuthorisationForCharacteristicType:dateOfBirthType]){
        NSDate *dateOfBirth = [self.store dateOfBirthWithError:&error];
        NSLog(@"Users date of birth = %@", dateOfBirth);
    }else{
        NSLog(@"Users date of birth not accessible");
    }