如何将ArrayList从主活动传递到在单独进程中运行的后台服务？

Question

我尝试传递＆＃34; Set＆＃34;从主活动到在不同进程中运行的后台服务的值（反之亦然）。因为我还没有找到任何＆＃34; Bundle＆＃34;也不是＆＃34; Message.Obj＆＃34;方法处理＆＃34;设置＆＃34;，我转换＆＃34; Set＆＃34;进入＆＃34; ArrayList＆＃34;。使用此源发送消息＆＃34; ArrayList＆＃34;似乎没有错误发生，因为服务获取消息。但是，当我尝试检索＆＃34; ArrayList＆＃34;来自＆＃34;消息＆＃34;，出现错误。

以下是＆＃34; Parcelable＆＃34;的源代码。类：

public class SavedCell implements Parcelable {
public String cssId;
public boolean isFinalized;
public boolean isInduced;
public Set<Integer> potential;

public SavedCell(Cell c) {
    this.cssId = c.cssId;
    this.isFinalized = c.isFinalized;
    this.isInduced = c.isInduced;
    this.potential = new HashSet(c.potential);
}

public SavedCell(String id, boolean f, boolean i, Set<Integer> p) {
    this.cssId = id;
    this.isFinalized = f;
    this.isInduced = i;
    this.potential = new HashSet(p);
}

public SavedCell(Parcel p) {
    this.cssId = p.readString();
    this.isFinalized = (p.readByte() != 0);
    this.isInduced = (p.readByte() != 0);

    int[] potentialArray = p.createIntArray();
    this.potential = new HashSet();
    for (int i : potentialArray) {
        this.potential.add(i);
    }
}

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

@Override
public void writeToParcel(Parcel dest, int flags) {
    dest.writeString(this.cssId);
    dest.writeByte((byte) (this.isFinalized ? 1 : 0));
    dest.writeByte((byte) (this.isInduced ? 1 : 0));

    int[] potentialArray = new int[this.potential.size()];
    int idx = 0;
    for (Iterator it=this.potential.iterator(); it.hasNext();) {
        potentialArray[idx++] = (int) it.next();
    }
    dest.writeIntArray(potentialArray);
}

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

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

@Override
public boolean equals(Object obj) {
    if (obj == null) {
        return false;
    }
    if (getClass() != obj.getClass()) {
        return false;
    }
    final SavedCell other = (SavedCell) obj;

    return this.cssId.equalsIgnoreCase(other.cssId);
}

}

以下是处理主Activity中数据发送的代码：

    public void createInitialSnapshot(Set<SavedCell> sgc, boolean initialisePuzzle) {
    ArrayList<SavedCell> bundledPuzzle = new ArrayList<>(sgc);

    if (isSolveServiceBound) {
        try {
            Bundle b = new Bundle();
            b.putParcelableArrayList("bundledPuzzle", bundledPuzzle);
            Message msg = Message.obtain(null, MSG_SAVE_INITIAL_SNAPSHOT, (initialisePuzzle) ? 1 : 0, 0, null);
            msg.setData(b);
            msg.replyTo = messengerSolveClient;
            messengerSolveService.send(msg);
        } catch (RemoteException e) {
            e.printStackTrace();
        }
    }
}

最后，代码尝试在后台服务进程中检索数据：

    private void saveInitialSnapShot(Message msg) {

    Bundle b = msg.getData();
    if (b == null) {
        ...
    } else {
        ...

        ArrayList<SavedCell> bundledPuzzle = b.getParcelableArrayList("bundledPuzzle");
        Set<SavedCell> sgc = new HashSet(bundledPuzzle);
...
}

围绕＆＃34; ArrayList bundledPuzzle = b.getParcelableArrayList（＆＃34; bundledPuzzle＆＃34;）;＆＃34;在try-catch块中的语句，报告的异常是＆＃34; android.os.BadParcelableException：解组时的ClassNotFoundException：be.ema.sc.SavedCell＆＃34;。