怎样将一个活动中的对象列表传递给android中的其他活动?

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我想从另一个活动传递一个活动的对象列表。我有一个类SharedBooking下面:

public class SharedBooking {
  public int account_id;
  public Double betrag;
  public Double betrag_effected;
  public int taxType;
  public int tax;
  public String postingText;
}

来自主叫活动的代码:

public List<SharedBooking> SharedBookingList = new ArrayList<SharedBooking>();

public void goDivision(Context context, Double betrag, List<SharedBooking> bookingList) {
  final Intent intent = new Intent(context, Division.class);    
  intent.putExtra(Constants.BETRAG, betrag);        
  intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);  
  context.startActivity(intent);        
}

被叫活动CODE:

Bundle extras = getIntent().getExtras();
if (extras != null) {
  amount = extras.getDouble(Constants.BETRAG,0);
}

我怎样才能从一项活动发送SharedBooking列表并接收其他活动的信息?

提问于
用户回答回答于

这是你将如何做到的:

public class SharedBooking implements Parcelable{

    public int account_id;
    public Double betrag;
    public Double betrag_effected;
    public int taxType;
    public int tax;
    public String postingText;

    public SharedBooking() {
        account_id = 0;
        betrag = 0.0;
        betrag_effected = 0.0;
        taxType = 0;
        tax = 0;
        postingText = "";
    }

    public SharedBooking(Parcel in) {
        account_id = in.readInt();
        betrag = in.readDouble();
        betrag_effected = in.readDouble();
        taxType = in.readInt();
        tax = in.readInt();
        postingText = in.readString();
    }

    public int getAccount_id() {
        return account_id;
    }
    public void setAccount_id(int account_id) {
        this.account_id = account_id;
    }
    public Double getBetrag() {
        return betrag;
    }
    public void setBetrag(Double betrag) {
        this.betrag = betrag;
    }
    public Double getBetrag_effected() {
        return betrag_effected;
    }
    public void setBetrag_effected(Double betrag_effected) {
        this.betrag_effected = betrag_effected;
    }
    public int getTaxType() {
        return taxType;
    }
    public void setTaxType(int taxType) {
        this.taxType = taxType;
    }
    public int getTax() {
        return tax;
    }
    public void setTax(int tax) {
        this.tax = tax;
    }
    public String getPostingText() {
        return postingText;
    }
    public void setPostingText(String postingText) {
        this.postingText = postingText;
    }
    public int describeContents() {
        // TODO Auto-generated method stub
        return 0;
    }
    public void writeToParcel(Parcel dest, int flags) {
        dest.writeInt(account_id);
        dest.writeDouble(betrag);
        dest.writeDouble(betrag_effected);
        dest.writeInt(taxType);
        dest.writeInt(tax);
        dest.writeString(postingText);

    }

    public static final Parcelable.Creator<SharedBooking> CREATOR = new Parcelable.Creator<SharedBooking>()
    {
        public SharedBooking createFromParcel(Parcel in)
        {
            return new SharedBooking(in);
        }
        public SharedBooking[] newArray(int size)
        {
            return new SharedBooking[size];
        }
    };

}

传递数据:

Intent intent = new Intent(getApplicationContext(),YourActivity.class);
Bundle bundle = new Bundle();
bundle.putParcelable("data", sharedBookingObject);
intent.putExtras(bundle);
startActivity(intent);

检索数据:

Bundle bundle = getIntent().getExtras();
sharedBookingObject = bundle.getParcelable("data");
用户回答回答于

首先,让列表的类实现Serializable

public class Object implements Serializable{}

然后你可以将这个列表转换为(Serializable)。像这样:

List<Object> list = new ArrayList<Object>();
myIntent.putExtra("LIST", (Serializable) list);

并检索您执行的列表:

Intent i = getIntent();
list = (List<Object>) i.getSerializableExtra("LIST");

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