arrays - 用于 UISearchBar 的过滤数组

Question

我有一个显示用户姓名、公司名称和照片 (PFFile) 的表格 View 。我拥有的每个 tableView 行都包含所有这些信息。

我正在使用 UISearchBarDelegate 和 IB 来实现一个搜索功能，以按用户名进行过滤。它找到了正确的用户，但我还无法更新公司照片。

如何过滤其他数组？我需要从数组中获取的项与从用户的名称数组中获取的项位于相同的索引处。

编辑:我正在尝试不同的数据结构并收到超出范围的数组索引，更新代码如下:

var filterArray = [User]()  //<-- globally declared
var userArray = [User]() //< Global


class User {

var name: String?
var company: String?

init (name: String?, company: String?) {

    self.name = name
    self.company = company
    }
}
//In a class which populates the search arrays
for object in unwrappedSucceeded {

   let username = object.valueForKey("username") as! String
   let companyName = object.valueForKey("companyName") as! String
   let user = User(name: username, company: companyName)

    userArray.append(user)
}

//tableViewController

func searchBar(searchBar: UISearchBar, textDidChange searchText: String) {

    filterArray.removeAll(keepCapacity: false)

    if searchText.characters.count != 0 {
        isSearch = true

        self.search(searchText)

    } else {
        isSearch = false
    }
}


func search(text: String) -> Void {

    filterArray = userArray.filter({$0.name == text})

}
//In cellForRowAtIndexPath
            cell.usernameCell.text = filterArray[indexPath.row].name //ARRAY INDEX OUT OF RANGE

Answer 1

就像我说的，你强烈建议将每个用户的信息分组到一个大容器中，因此我们可以使用 struct 或 class 的数组，这样就更容易过滤。

容器示意图:

struct Container
{
  var username:String?
  var companyName:String?
  var photo:UIImage?
}

您的主数组将是:var arrayofData = [Container]()

现在，当您在查询函数中通过解析查询对象时

// after you called the findObjectsWithBackgroundBlock()
// let's assume you check for error and if the [PFObject] is empty or not 

 for one in objectsFromParse
 {
  let photoToget = one["Photo"] as! PFFile
 // next step should be to get the image data right :) 
 {
    // let's assume that is the block when get the image data right:)
    // check your data and assign it to some UIImage
     // then 
     let userRepresentation = Container()  //<-- we are creating a single object representation for each user 

     let username = one["username"] as! String    //<--data we got from Parse
     let companyName = one["companyName"] as! String
     let userImage = //the UIImage which contains the data 

     userRepresentation.username = username
     userRepresentation.companyName = companyName
     userRepresentation.photo = userImage

  // then we append 
    arrayOfData.append(userRepresentation)
 }
}

现在我们已将所有数据放入我们的数组中，所以让我们按用户名过滤，同时我希望您配置 tableView，这样当您有来自过滤器或常规数组的数据时。

  var filterArray = [Container]()  //<-- globally declared

  func search(text: String) -> Void
 {
    filterArray = arrayOfData.filter(){ (Container) -> Bool in
       let range = Container.name!.rangeOfString(text,   options:NSStringCompareOptions.CaseInsensitiveSearch) return range != nil }
       // then you are good to go 
 }