Question

当我试图通过“循环for”进行迭代时会导致致命异常：

              java.lang.ClassCastException: com.google.gson.internal.LinkedTreeMap cannot be cast to br.com.gerticonsultoria.easyrentrider.model.ChatUser
                  at br.com.gerticonsultoria.easyrentrider.MapActivity$1.onReceive(MapActivity.java:272)
                  at android.support.v4.content.LocalBroadcastManager.executePendingBroadcasts(LocalBroadcastManager.java:297)
                  at android.support.v4.content.LocalBroadcastManager.access$000(LocalBroadcastManager.java:46)
                  at android.support.v4.content.LocalBroadcastManager$1.handleMessage(LocalBroadcastManager.java:116)
                  at android.os.Handler.dispatchMessage(Handler.java:102)
                  at android.os.Looper.loop(Looper.java:135)
                  at android.app.ActivityThread.main(ActivityThread.java:5254)
                  at java.lang.reflect.Method.invoke(Native Method)
                  at java.lang.reflect.Method.invoke(Method.java:372)
                  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
                  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)

我有这些数据：

 ArrayList<ChatUser> chatUser2 = intent.getParcelableArrayListExtra("chatUser");


chatUser2 = {ArrayList@6170}  size = 2
 0 = {LinkedTreeMap@6529}  size = 14
   0 = {LinkedTreeMap$Node@6533} "ConnectionId" -> "2500c795-3bad-4543-9905-2693807cc8ea"
      key = "ConnectionId"
      value = "2500c795-3bad-4543-9905-2693807cc8ea"
   1 = {LinkedTreeMap$Node@6534} "UserGroup" -> "G"
      key = "UserGroup"
      value = "G"
   2 = {LinkedTreeMap$Node@6535} "FgBusy" -> "S"
   3 = {LinkedTreeMap$Node@6536} "UserType" -> "O"
   4 = {LinkedTreeMap$Node@6537} "OperatorConnectionId" -> "null"
   5 = {LinkedTreeMap$Node@6538} "OperatorID" -> "2.0"
   6 = {LinkedTreeMap$Node@6539} "OperatorName" -> "null"
   7 = {LinkedTreeMap$Node@6540} "OnlineUsers" -> "0.0"
   8 = {LinkedTreeMap$Node@6541} "UserID" -> "2.0"
   9 = {LinkedTreeMap$Node@6542} "UserName" -> "Douglas"
  10 = {LinkedTreeMap$Node@6543} "CurrentDate" -> "2016-07-18T10:41:31.6714956-03:00"
  11 = {LinkedTreeMap$Node@6544} "Latitude" -> "47.677928"
  12 = {LinkedTreeMap$Node@6545} "Longitude" -> "-122.130293"
  13 = {LinkedTreeMap$Node@6546} "VehicleId" -> "17.0"
1 = {LinkedTreeMap@6530}  size = 14
  0 = {LinkedTreeMap$Node@6606} "ConnectionId" -> "9d5fa748-0870-419c-82b3-0a2c2654839e"
  1 = {LinkedTreeMap$Node@6607} "UserGroup" -> "G"
  2 = {LinkedTreeMap$Node@6608} "FgBusy" -> "S"
  3 = {LinkedTreeMap$Node@6609} "UserType" -> "O"
  4 = {LinkedTreeMap$Node@6610} "OperatorConnectionId" -> "null"
  5 = {LinkedTreeMap$Node@6611} "OperatorID" -> "1.0"
  6 = {LinkedTreeMap$Node@6612} "OperatorName" -> "null"
  7 = {LinkedTreeMap$Node@6613} "OnlineUsers" -> "0.0"
  8 = {LinkedTreeMap$Node@6614} "UserID" -> "1.0"
  9 = {LinkedTreeMap$Node@6615} "UserName" -> "Wilian"
 10 = {LinkedTreeMap$Node@6616} "CurrentDate" -> "2016-07-18T10:41:37.1728196-03:00"
 11 = {LinkedTreeMap$Node@6617} "Latitude" -> "47.678694"
 12 = {LinkedTreeMap$Node@6618} "Longitude" -> "-122.130529"
 13 = {LinkedTreeMap$Node@6619} "VehicleId" -> "16.0"

我试图以这种方式迭代：

            for (int i = 0; i < chatUser2.size(); i++) {
                Log.i("script", "Coords : " + chatUser2.get(i).Latitude + " " + chatUser2.get(i).Longitude);
            }

我尝试过其他方法，尝试过gson，迭代器等，但我无法解决。任何人都可以帮助我??

提前致谢。

Answer 1

我解决了实现Parcelable并改变迭代的问题：

    for (int i = 0; i < chatUserConnect.size(); i++) {
                listMapItem.add(new MapItem(chatUserConnect.get(i).getLatitude(), chatUserConnect.get(i).getLongitude(),"" ,
                        chatUserConnect.get(i).getUserID(), chatUserConnect.get(i).getVehicleId()));
     }





import android.os.Parcel;
import android.os.Parcelable;

import com.google.gson.annotations.SerializedName;


public  class ChatUserConnect implements Parcelable
{
    @SerializedName("UserType")
    public String UserType;
    @SerializedName("UserID")
    public long UserID;
    @SerializedName("Latitude")
    public double Latitude;
    @SerializedName("Longitude")
    public double Longitude;
    @SerializedName("VehicleId")
    public long VehicleId;

    public ChatUserConnect( String UserType, long UserID, double Latitude, double Longitude, long VehicleId ) {
        this.UserType = UserType;
        this.UserID = UserID;
        this.Latitude = Latitude;
        this.Longitude = Longitude;
        this.VehicleId = VehicleId;
    }

    public long getVehicleId() {
        return VehicleId;
    }

    public void setVehicleId(long VehicleId) {
        this.VehicleId = VehicleId;
    }

    public String getUserType() {
        return UserType;
    }

    public void setUserID(String UserType) {
        this.UserType = UserType;
    }

    public long getUserID() {
        return UserID;
    }

    public void setUserID(long UserID) {
        this.UserID = UserID;
    }

    public double getLongitude() {
        return Longitude;
    }
    public void setLongitude(double Longitude) {
        this.Longitude = Longitude;
    }

    public double getLatitude() {
        return Latitude;
    }
    public void setLatitude(double Latitude) {
        this.Latitude = Latitude;
    }



    @Override
    public int describeContents() {
        return 0;
    }

    @Override
    public void writeToParcel(Parcel dest, int flags) {
        dest.writeString(UserType);
        dest.writeLong(UserID);
        dest.writeDouble(Latitude);
        dest.writeDouble(Longitude);
        dest.writeLong(VehicleId);
    }
    protected ChatUserConnect(Parcel in) {
        UserType = in.readString();
        UserID = in.readLong();
        Latitude = in.readDouble();
        Longitude = in.readDouble();
        VehicleId = in.readLong();
    }

    public static final Creator<ChatUserConnect> CREATOR  = new Creator<ChatUserConnect>() {
        @Override
        public ChatUserConnect createFromParcel(Parcel in) {
            return new ChatUserConnect(in);
        }

        @Override
        public ChatUserConnect[] newArray(int size) {
            return new ChatUserConnect[size];
        }
    };
}

Android：Loop for得到java.lang.ClassCastException：com.google.gson.internal.LinkedTreeMap无法转换

1 个答案: