GMSMarker infowindow content（snippet）not updating

我有一個數組，其中每個元素都有LatitudeLongitude以及其他一些值，可以在地圖上繪製標記。我正在使用以下代碼更新GMSMarker的片段，位置和圖標。我正在使用UISlider來遍歷數組。當我這樣做時，標記的圖標和位置會更新，標記的InfoWindow不會更新。它只顯示舊內容。但是，當我取消選擇並再次選擇它時，它會顯示正確的infowindow內容。我試圖使用tracksInfoWindowChanges，但它不起作用。GMSMarker infowindow content（snippet）not updating

@IBAction func progressChanged(_ sender: UISlider) { 

    let iVal = Int(sender.value) 

    if iVal < progressList.count { 

     let str = progressList[iVal] 

     let arr = str.components(separatedBy: "!") 



     let lat = Double(arr[4])! 

     let lng = Double(arr[5])! 



     let pos = CLLocationCoordinate2DMake(lat, lng) 

     let fRotation = Float(arr[9]) 

     let rotation = CGFloat(fRotation!) 



     let strTime = arr[0] 

     let idleFlag = arr[1] 

     let strSpeed = arr[2] 

     let strName = arr[3] 



     proMarker.position = pos 

     proMarker.title = strName 



     if idleFlag == "Y" { 

      proMarker.snippet = strSpeed + "!" + strTime + "!" + "idle" 

      proMarker.tracksInfoWindowChanges = true 

      let markerImage = UIImage(named: "arrow_red") 

      let rotated = markerImage?.imageRotatedByDegrees(rotation, flip: false) 

      proMarker.icon = rotated 

     } else { 

      proMarker.snippet = strSpeed + "!" + strTime + "!" + "moving" 

      proMarker.tracksInfoWindowChanges = true 

      let markerImage = UIImage(named: "arrow_green") 

      let rotated = markerImage?.imageRotatedByDegrees(rotation, flip: false) 

      proMarker.icon = rotated 

     } 

     proMarker.groundAnchor = CGPoint(x: 0.5, y: 0.5) 



     let dTime = sdf5.date(from: strTime) 

     let sTime = sdf6.string(from: dTime!) 



     hTime.text = sTime 

     hSpeedIdle.text = strSpeed + " km/h" 

    } 

}

請幫我解決我的問題。

來源

2017-06-17 Praveen Kumar