in order limit number of query database , consumption of data , battery, segue data of tableview collectionview.
import uikit import parseui import parse class listcontrollerview: pfquerytableviewcontroller { // initialise pfquerytable tableview override init(style: uitableviewstyle, classname: string!) { super.init(style: style, classname: classname) } required init(coder adecoder: nscoder) { super.init(coder: adecoder)! // configure pfquerytableview self.parseclassname = "shopz" self.textkey = "shopname" self.pulltorefreshenabled = true self.paginationenabled = false } // define query provide data table view override func queryfortable() -> pfquery { var query = pfquery(classname: "shopz") // query.orderbyascending("updatedat") return query } //override func tableview(tableview: uitableview, cellforrowatindexpath indexpath: nsindexpath) -> uitableviewcell override func tableview(tableview: uitableview, cellforrowatindexpath indexpath: nsindexpath, object: pfobject?) -> pftableviewcell { var cell = tableview.dequeuereusablecellwithidentifier("cell") as! listcontrollerviewcell! if cell == nil { cell = listcontrollerviewcell(style: uitableviewcellstyle.default, reuseidentifier: "cell") } // display flag image if let finalimage = object?["imagepromo"] as? pffile { finalimage.getdatainbackgroundwithblock {(imagedata: nsdata?, error: nserror?) -> void in if error == nil { if let imagedata = imagedata { cell.imagepromo!.image = uiimage(data:imagedata) } } } } // extract values pfobject display in table cell if let shopnamelabel = object?["shopname"] as? string { cell.shopname!.text = shopnamelabel print(shopnamelabel) } if let shopaddresslabel = object?["shopaddress"] as? string { cell.shopaddress!.text = shopaddresslabel print(shopaddresslabel) } return cell; } // in storyboard-based application, want little preparation before navigation override func prepareforsegue(segue: uistoryboardsegue, sender: anyobject?) { // new view controller using [segue destinationviewcontroller]. var detailscene = segue.destinationviewcontroller as! collectionview detailscene.shopzcollection = object pfobject? } override func viewdidappear(animated: bool) { // refresh table ensure data changes displayed tableview.reloaddata(); } }` collection view controller:
import uikit import parse import parseui var shopzcollection = [pfobject]()` class collectionview: uiviewcontroller, uicollectionviewdatasource, uicollectionviewdelegate { // connection collection view @iboutlet weak var collectionview: uicollectionview! override func viewdidload() { super.viewdidload() } /* ========================================================================================== ensure data within collection view updated when ever displayed ========================================================================================== */ // load data collectionview when view appears override func viewdidappear(animated: bool) { loadcollectionviewdata() } /* ========================================================================================== fetch data parse platform ========================================================================================== */ func loadcollectionviewdata() { // build parse query object var query = pfquery(classname:"shopz") // fetch data parse platform query.findobjectsinbackgroundwithblock { (objects: [pfobject]?, error: nserror?) -> void in // find succeeded rocess found objects countries array if error == nil { // clear existing data shopzcollection.removeall(keepcapacity: true) // add shop objects our array if let objects = objects [pfobject]? { shopzcollection = array(objects.generate()) } // reload our data collection view self.collectionview.reloaddata() } else { // log details of failure print("error: \(error!) ") } } } /* ========================================================================================== uicollectionview protocol required methods ========================================================================================== */ func numberofsectionsincollectionview(collectionview: uicollectionview) -> int { return 1 } func collectionview(collectionview: uicollectionview, numberofitemsinsection section: int) -> int { return shopzcollection.count } func collectionview(collectionview: uicollectionview, cellforitematindexpath indexpath: nsindexpath) -> uicollectionviewcell { let cell = collectionview.dequeuereusablecellwithreuseidentifier("collectioncell", forindexpath: indexpath) as! collectionviewcell // display country name if let value = shopzcollection[indexpath.row]["shopname"] as? string { cell.celltitle.text = value } if let value = shopzcollection[indexpath.row]["shopaddress"] as? string { cell.celldetail.text = value } // fetch final flag image - if exists if let finalimage = shopzcollection[indexpath.row]["imagepromo"] as? pffile { finalimage.getdatainbackgroundwithblock {(imagedata: nsdata?, error: nserror?) -> void in if error == nil { if let imagedata = imagedata { cell.cellimage!.image = uiimage(data:imagedata) } } } } return cell } /* ========================================================================================== process memory issues completed ========================================================================================== */ override func didreceivememorywarning() { super.didreceivememorywarning() // dispose of resources can recreated. } }`
i guess have think again structure of code/project:
create swift file var ( shopname, shopaddress, imagepromo)
create wife file query data ( query.findobjectsinbackgroundwithblock) function call involves change list controller
file list
file collection
don't know how call function executes query...
in prepareforsegue of tableviewcontroller, trying pass 1 object (detailscene.shopzcollection = object pfobject?).
you should pass entire collection of objects (self.objects) collectionview.
i'm not versed swift, obj-c equivalent be:
- (void)prepareforsegue:(uistoryboardsegue *)segue sender:(id)sender { .... detailscene.shopzcollection = self.objects; // shopzcollection nsarray in destination } 
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