ios - Swift 3 and Alamofire - Image and data from JSON -


i have project trying bring in data web url using alamofire. trying bring in image , text keep getting build failed. trying add data (image , text) tags = 1 , 2. code below appreciated. new swift.

swift

import uikit import alamofire  struct postinput {     let mainimage : uiimage!     let name : string!  }   class tableviewcontroller: uitableviewcontroller {      var postsinput = [postinput]()      var mainurl = "https://www.testjson.com"      typealias jsonstandard = [string : anyobject]      override func viewdidload() {         super.viewdidload()         // additional setup after loading view, typically nib.         callalamo(url: mainurl)     }      func callalamo(url : string){         alamofire.request(url).responsejson(completionhandler: {             response in              self.parsedata(jsondata: response.data!)           })      }      func parsedata(jsondata : data) {         {             var readablejson = try jsonserialization.jsonobject(with: jsondata, options: .mutablecontainers) as! jsonstandard              if let posts = readablejson["posts"] as? [jsonstandard] {                 post in posts {                      let title = post["title"] as! string                      if let images = post["image"] as? jsonstandard {                         let mainimageurl = url(string: imagedata["url"] as! string)                         let mainimagedata = nsdata(contentsof: mainimageurl!)                          let mainimage = uiimage(data: mainimagedata as! data)                      }                      postsinput.append(postinput.init(mainimage: mainimage, name: name))                   }                  self.tableview.reloaddata()              }          }           catch {             print(error)         }       }         override func tableview(_ tableview: uitableview, numberofrowsinsection section: int) -> int {         return postsinput.count     }      override func tableview(_ tableview: uitableview, cellforrowat indexpath: indexpath) -> uitableviewcell {         let cell = tableview.dequeuereusablecell(withidentifier: "cell")          // cell?.textlabel?.text = titles[indexpath.row]          let mainimageview = cell?.viewwithtag(2) as! uiimageview          mainimageview.image = postsinput[indexpath.row].mainimage          let mainlabel = cell?.viewwithtag(1) as! uilabel          mainlabel.text = postsinput[indexpath.row].name           return cell!     }      override func didreceivememorywarning() {         super.didreceivememorywarning()         // dispose of resources can recreated.     }   }

json

 { posts: [ { id: “000000”, url: "/content/interview2”, date: "2016-11-03 09:01:41", modified: "2016-11-03 09:03:47", title: "an interview", image: "https://www.example.com/sites/default/files/oregood.jpeg", summary: { value: "<p>latin text here</p> ", format: "filtered_html" } ]}

the following reasons build error following:

  1. you added line postsinput.append(postinput.init(mainimage: mainimage, name: name)) outside context mainimage obtained. based on json, believe supposed rewrite this. 

    if let imageurl = post["image"] as? jsonstandard {    let mainimageurl = url(string: imageurl)    let mainimagedata = nsdata(contentsof: mainimageurl!)     let mainimage = uiimage(data: mainimagedata as! data)    postsinput.append(postinput.init(mainimage: mainimage, name: title)) }

  2. even if that, variables imagedata , name undefined. should that.

  3. just suggestion, not force unwrap optionals. use optional binding wherever possible.


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