Intent.putExtra List [duplicate]

This question already has answers here: Closed 11 years ago.

Possible Duplicate:

How to put a List in intent

I want to pass a List from one activity to another. So far I have not been successful. This is my code.

//desserts.java

private List<Item> data;  

@Override
public void onCreate(Bundle icicle) {
//Code
data.add(new Item(10, "dessert1"));
data.add(new Item(11, "dessert2"));
data.add(new Item(12, "dessert3"));
data.add(new Item(13, "dessert4"));
data.add(new Item(14, "dessert5"));
data.add(new Item(15, "dessert6"));
data.add开发者_如何学Go(new Item(16, "dessert7"));
data.add(new Item(17, "dessert8"));
data.add(new Item(18, "dessert9"));
data.add(new Item(19, "dessert10"));
data.add(new Item(20, "dessert11"));  

//Some more code  
}  

@Override
public void onClick(View v) {  
Intent view_order_intent = new Intent(this, thirdpage.class);
view_order_intent.putExtra("data", data); 
startActivity(view_order_intent);  
}   

But I am not able to put data this way. I asked this question earlier but not much happened.

Kindly help. Also help me how to get data in next activity.

---

Assuming that your List is a list of strings make data an ArrayList<String> and use intent.putStringArrayListExtra("data", data)

Here is a skeleton of the code you need:

1. Declare List

    private List<String> test;
   

2. Init List at appropriate place

    test = new ArrayList<String>();
   

   and add data as appropriate to test.

3. Pass to intent as follows:

    Intent intent = getIntent();  
    intent.putStringArrayListExtra("test", (ArrayList<String>) test);
   

4. Retrieve data as follows:

    ArrayList<String> test = getIntent().getStringArrayListExtra("test");
   

---

If you use ArrayList instead of list then also your problem wil be solved. In your code only modify List into ArrayList.

private List<Item> data;

---

you can do it in two ways using

• Serializable

• Parcelable.

This examle will show you how to implement it with serializable

class Customer implements Serializable
{
   // properties, getter setters & constructor
}

// This is your custom object
Customer customer = new Customer(name, address, zip);

Intent intent = new Intent();
intent.setClass(SourceActivity.this, TargetActivity.this);
intent.putExtra("customer", customer);
startActivity(intent);

// Now in your TargetActivity
Bundle extras = getIntent().getExtras();
if (extras != null)
{
    Customer customer = (Customer)extras.getSerializable("customer");
    // do something with the customer
}

Now have a look at this. This link will give you a brief overview of how to implement it with Parcelable.

Look at this.. This discussion will let you know which is much better way to implement it.

Thanks.

---

 //To send from the activity that is calling another activity via myIntent

    myIntent.putExtra("id","10");
    startActivity(myIntent);

    //To receive from another Activity

            Bundle bundle = getIntent().getExtras();
            String id=bundle.getString("id");