ios - swift segue to previous VC with data -

i looking perform 2 different segues.

i have vc entered "present modally". vc have segue(push) leading tableview vc.

problem 1

i want able go table view previous vc once touch row. problem here don't know type of segue use in order go 1 step sending data @ same time.

i have close button set "unwind vc" closing vc.

problem 2

from tableview have segue(push) leading tableview vc. - pick category , sub-category. problem here don't know how go 1 step or how make segue vc1 sends info both table view controllers.

thanks

problem 1:

on top of yourtableviewcontroller class (not inside class on top meaning outside) implement following protocol:

protocol mytableviewcontrollerdelegate { func tableviewcontroller(controller: yourtableviewcontroller, didfinishpicking item item: someitemyouwanttopassback) } 

then following: in table view controller class(yourtableviewcontroller) implement these:

weak var delegate: mytableviewcontrollerdelegate? \the style implement delegates.

override func tableview(tableview: uitableview, didselectrowatindexpath indexpath: nsindexpath) {  let itemyouwanttopassbacktovc: someitemyouwanttopassback = dataimplementedintableview[indexpath.row] delegate?.tableviewcontroller(self, didfinishpickingitem item: itemyouwanttopassbacktovc)  dismissviewcontrolleranimated(true, completion: nil)   tableview.deselectrowatindexpath(indexpath, animated: true)   } 

then in previous vc implement function created in protocol:

func tableviewcontroller(controller: yourtableviewcontroller, didfinishpicking item item: someitemyouwanttopassback) {  // here take "item" parameter , use purpose. item wanted pass here  } 

in addition read apple documentation learn more protocols , delegates.

problem 2:

ok... in case suggest following: implement following function in vc1:

@ibaction func unwindtovc1() { \\you can leave place empty  } 

then, pay attention these words: in storyboard find view controller tableview number 2 (the 1 showing subcategories) , on top of see 3 buttons. ctrl + drag yellow red exit door , choose "unwindtovc1" popup.

in document outline (the list view displaying have in storyboard) locate newly created segue , give name it, let "seguevc1".

then in tableviewcontrollernumbertwo implement this:

override func tableview(tableview: uitableview, didselectitematindexpath indexpath: nsindexpath) {      let item1 = yourdatamodel[indexpath.row]     performseguewithidentifier("seguevc1", sender: item1)  }  override func prepareforsegue(segue: uistoryboardsegue, sender: anyobject?) {     if let segue.identifier == "seguevc1" {    let vc = segue.destinationviewcontroller vc1 \\ vc1 first vc want segue    vc.modeltoreceive = sender modeltoreceiveclass   } }