Android ArrayList 在 Activity 之间传递

Question

我有一个简单的类 Track，它存储有关路线的信息:

import java.io.Serializable;
import java.util.ArrayList;
import java.util.Date;

import android.location.Location;

public class Track implements Serializable {
    private static final long serialVersionUID = -5317697499269650204L;

    private Date date;
    private String name;
    private int time;
    private double distance, speed;
    private ArrayList<Location> route;

    public Track(String name, int time, double distance, ArrayList<Location> route) {
        this.date = new Date();
        this.name = name;
        this.time = time;
        this.distance = distance;
        this.speed = distance / (time / 3600.);
        this.route = route;
    }

    public String getDate() {
        return String.format("Date: %1$td-%1$tb-%1$tY%nTime: %1$tH:%1$tM:%1$tS", date);
    }

    public String getName() {
        return name;
    }

    public int getTime() {
        return time;
    }

    public double getDistance() {
        return distance;
    }

    public float getSpeed() {
        return (float) speed;
    }

    public ArrayList<Location> getRoute() {
        return route;
    }

    @Override
    public String toString() {
        return String.format("Name: %s%nDate: %2$td-%2$tb-%2$tY%nTime: %2$tH:%2$tM:%2$tS", name, date);
    }
}

我将它从一个 Activity 传递到另一个 Activity :

Intent showTrackIntent = new Intent(TabSavedActivity.this, ShowTrackActivity.class);
showTrackIntent.putExtra("track", adapter.getItem(position));
startActivity(showTrackIntent);

在哪里(Track 对象是 ListView 上的元素)。我在传递 Track 对象时出错:

java.lang.RuntimeException: Parcelable 遇到 IOException 写入可序列化对象 (name = classes.Track)


发生了什么事？

Answer 1

我认为问题在于 Location 不可序列化。尝试序列化 Location 对象时遇到问题的人对 SE 提出了很多问题。但是，Location 是 Parcelable，所以也许您只为您的类实现 Parcelable 而不是使用 Serializable