发送一个 arraylist 到 parent activity

问题描述：

我想发送一个 arraylist 到 parent activity

private ArrayList<Receipt> receipts = new ArrayList<Receipt>();
 Intent data = new Intent();
 data. // what to do here?
setResult(RESULT_OK, data); 
//************************************

下面是简单的代码

public class Receipt {
    public String referenceNo;
    public byte[]   image;
    public String comments;
    public Date   createdOn;
    public Date   updatedOn;

如何在 intent 中添加，还有如何从 parent activity 里检索？

onActivityResult(final int requestCode, int resultCode, final Intent data)

答

public class Receipt implements Serializable{
    public String referenceNo;
    public byte[]   image;
    public String comments;
    public long   createdOn;
    public long   updatedOn;
    //...
}

//Put the list in the intent
List<Receipt> list = ...
Intent data = new Intent();
data.putExtra("tag", list);

//Read the list from the intent:
list = (List<Receipt>) data.getSerializableExtra("tag");

答

Receipt extends Parcelable才能传递

public void putParcelableArrayList(String key,
        ArrayList<? extends Parcelable> value) {｝

发送一个 arraylist 到 parent activity

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