The man remained in a critical condition in hospital but it was hoped he would soon be able to be interviewed.
Justice Cameron Mander continued suppression of the complainant's name after hearing his family had been subjected to "adverse comments" on social media.
Police were called to the Coast Rd property at 3.20pm, Detective Inspector Stu Harvey said after the incident.
The victim was taken by helicopter to Christchurch Hospital.
Later that afternoon, at least half a dozen police officers, including a member of the armed offenders squad, were involved in the arrest of a man about 20km south of where the incident took place.
Dick-Karetai will be back before the court in February.
