Eureka Swift-LocationRow的设置值

Question

我有一个表单，用户可以从中选择许多包含坐标数据的对象，我希望将这些数据加载到LocationRow中。

我尝试了几种不同的方法来尝试设置“位置行”值，但是它要么崩溃（在展开一个可选值时意外发现nil），要么没有用正确的数据重新加载该表。即https://i.imgur.com/2XkeHbu.png

我的LocationRow eureka代码：

$0.rowRight = LocationRow(){
                    $0.title = "Location"
                    $0.tag = "location"
                    if let page = selectedPage {
                        if let pageLocationLatitude = page.locationLatitude.value,
                            let pageLocationLongutude = page.locationLongitude.value {
                            print("testing for row update")
                            $0.value = CLLocation(latitude: pageLocationLatitude, longitude: pageLocationLongutude)
                        }
                    }

                }

以及我要更新LocationRow时调用的函数

 private func setSelectedPage(pageName : String) {
        print("setting location of page: \(pageName)")
        if pageName == username {
            return
        }
        selectedPage = userPages?.filter("name == \"\(pageName)\"").first
        if let locationLongitude = selectedPage?.locationLongitude.value,
            let locationLatitude = selectedPage?.locationLatitude.value {

        print("lat and lon: \(locationLatitude) \(locationLongitude)")

        /*PURELY FOR TESTING
        let titleRow = self.form.rowBy(tag: "title") as! TextRow
        titleRow.value = "TEST WORKS OK"
        titleRow.updateCell()
        PURELY FOR TESTING */

        let locationRow = self.form.rowBy(tag: "location") as! LocationRow
        locationRow.value = CLLocation(latitude: locationLatitude, longitude: locationLongitude)
        self.form.rowBy(tag: "location")?.updateCell()
    }


   self.tableView.reloadData()
}

Answer 1

从您的代码中，我可以看到您正在将此位置行放入SplitRow：

// rowRight is a property of SplitRow
$0.rowRight = LocationRow(){

因此，表单并不真正知道位置行。它只知道拆分行。您应该首先使用its标记获取拆分行，然后访问rowRight。

// use the tag of your split row here!
let splitRow = self.form.rowBy(tag: "splitRow") 
                    as! SplitRow<SomeRow, LocationRow> // replace SomeRow with the type of row on the left of the split row
let locationRow = splitRow.rowRight
locationRow.value = CLLocation(latitude: locationLatitude, longitude: locationLongitude)
locationRow.updateCell()