如何在onSavedInstanceState（）中存储Bundle并检索它？

Question

我想在调用下一个活动（Activity2）之前存储一个在Activity（比如Activity1）中收到的包，并在我回到同一个Activity（到Activity1）时检索同一个包。我该怎么做？

Answer 1

试试这个，

public class ParcleListTopic implements Parcelable{
    private List<ParcleTopic> list;
    private ArrayList<HoldListTopic> listh=new ArrayList<HoldListTopic>();
    public ArrayList<HoldListTopic> GetListTopic()
    {
        for(int i=0;i<list.size();i++)
        {
            listh.add(list.get(i).GetHold());
        }
        return listh;
    }
    public void writeToParcel(Parcel dest, int flags) {
        dest.writeTypedList(list);
    }
    public ParcleListTopic(Parcel in)
    {
        in.readTypedList(list,ParcleTopic.CREATOR);

    }
    public ParcleListTopic(List<ParcleTopic> list)
    {
        this.list=list;
    }
    public static final Parcelable.Creator<ParcleListTopic> CREATOR = new Parcelable.Creator<ParcleListTopic>(){
          public ParcleListTopic createFromParcel(Parcel s)
          {
              return new ParcleListTopic(s);
          }
          public ParcleListTopic[] newArray(int size) 
          {
                return new ParcleListTopic[size];
          }
    };
    public int describeContents() {
        // TODO Auto-generated method stub
        return 0;
    }
}


public class ParcleTopic implements Parcelable
{
    HoldListTopic hold;
    public ParcleTopic(HoldListTopic hold)
    {
        this.hold=hold;
    }
    public HoldListTopic GetHold()
    {
        return hold;
    }
    public int describeContents() 
    {
        return 0;
    }
    public void writeToParcel(Parcel dest, int flags)
    {
        dest.writeString(hold.Title);
        dest.writeString(hold.Date);
        dest.writeInt(hold.NumberComment);
        dest.writeInt(hold.ID);
    }
    public ParcleTopic(Parcel in)
    {
        hold.Title=in.readString();
        hold.Date=in.readString();
        hold.NumberComment=in.readInt();
        hold.ID=in.readInt();
    }
    public static final Parcelable.Creator<ParcleTopic> CREATOR = new Parcelable.Creator<ParcleTopic>()
    {
          public ParcleTopic createFromParcel(Parcel s)
          {
              return new ParcleTopic(s);
          }
          public ParcleTopic[] newArray(int size) 
          {
                return new ParcleTopic[size];
          }
    }; }