自定义类 - Android上不可序列化的异常

Question

所以我试图通过意图将一个我创建的类的实例传递给一个新的活动.

public class Room implements Serializable{

    /**
     * 
     */
    private static final long serialVersionUID = 6857044522819206055L;


    int roomID;

    String roomName;

    ArrayList<MarkerHolder> markerHolders = new ArrayList<MarkerHolder>();


    public int getRoomID() {
        return roomID;
    }
    public void setRoomID(int roomID) {
        this.roomID = roomID;
    }

    public String getRoomName() {
        return roomName;
    }
    public void setRoomName(String roomName) {
        this.roomName = roomName;
    }       

    public ArrayList<MarkerHolder> getMarkerHolders() {
        return markerHolders;
    }
    public void setMarkerHolders(ArrayList<MarkerHolder> markerHolders) {
        this.markerHolders = markerHolders;
    }       
}

public class MarkerHolder implements Serializable{
    /**
     * 
     */
    private static final long serialVersionUID = -7334724625702415322L;
    String marker;
    String markerTag;
    public String getMarker() {
        return marker;
    }
    public void setMarker(String marker) {
        this.marker = marker;
    }
    public String getMarkerTag() {
        return markerTag;
    }
    public void setMarkerTag(String markerTag) {
        this.markerTag = markerTag;
    }
}

我试着通过那个班级

Intent svc = new Intent(this, RoomUploader.class);
svc.putExtra("room", room);

try{           
    startService(svc);  
}catch (Exception e){
     e.printStackTrace();
}

并且我一直得到一个我无法弄清楚的Not Serializable Exception.这两个类都实现了可序列化并具有串行ID.成员变量只是字符串,整数和另一个类的数组,该类也是可序列化的,只包含字符串.据我所知,所有这些都应该是可序列化的,还有什么可能导致这个错误？提前致谢.

Answer 1

这些类是您活动的内部类还是其他类？如果是这样,他们会引用他们的外部类(可能是也可能不是可序列化的),你可以通过创建这些类来解决这个问题static.

例:

public static class Room implements Serializable
{
    //your implementation
}

public static class MarkerHolder implements Serializable
{
    //your implementation
}