无法隐式转换类型＆＃39; Java.Lang.Object＆＃39; to＆＃39; Android.Runtime.JavaDictionary <string，string =“”>

Question

我在我的应用上应用Google Places Api并将Java转换为C＃代码。但是当我到达列表中的附近位置时，我收到了这个错误：

无法隐式转换类型＆＃39; Java.Lang.Object＆＃39;到＆＃39; Android.Runtime.JavaDictionary＆＃39;。存在显式转换（您是否错过了演员？）

private void showNearbyPlaces(JavaList<JavaDictionary<string, string>> placeList)
    {
        for (int eachPlace = 0; eachPlace < placeList.Size(); eachPlace++)
        {

            MarkerOptions markerOptions = new MarkerOptions();
            JavaDictionary<string, string> googlePlace = placeList.Get(eachPlace); /*This is the error*/
        }
    }

代码截图

有谁知道如何解决这个问题？谢谢。

Answer 1

尝试明确地投射它：

JavaDictionary<string, string> googlePlace = (type)placeList.Get(eachPlace)

如果这不起作用，我建议将placeList转换为更原始的对象（最有可能的字符串），然后将其重构为字典：

JavaDictionary<string, string> googlePlace = placeList.Get(eachPlace).ConvertToString();

public JavaDictionary<string, string> ConvertToString(this [placeListType] placeList)
{
    // Create a dictionary

    // foreach object in placeList
    // Get the first string and assign it
    // Get the second string and assign it
    // Create a new object with them as parameters
    // Add object to dictionary

    // Return dictionary
} 

Answer 2

您可以使用System.Collections.Generic.List代替JavaList，例如：

using System.Linq;

...

private void showNearbyPlaces(List<JavaDictionary<string, string>> placeList)
{
    for (int eachPlace = 0; eachPlace < placeList.Count; eachPlace++)
    {
        JavaDictionary<string, string> googlePlace = placeList.ElementAt(eachPlace);
    }
}

Answer 3

像这样使用C＃IDictionary，

IDictionary<string, string> placeList= new Dictionary<string, string>();
placeList.Add(new KeyValuePair<string, string>("your string", "your new string"));