How I pass by refernece object between activity in Android

Question

Can I pass by reference object between activity in Android , How ?

Thankyou

I'm voting to close this question as off-topic because the OP is a **lazybone**. No effort is shown in googling for `android pass object by reference between activities` — Phantômaxx, Jul 28 '16 at 18:56
yes, if your object is a custom `Binder` class, but it is a risky stuff, as it its a "live" object and your sending activity can be dead in any time — pskink, Jul 28 '16 at 19:09
Possible duplicate of [How to pass an object from one activity to another on Android](http://stackoverflow.com/questions/2736389/how-to-pass-an-object-from-one-activity-to-another-on-android) — Dinidu Hewage, Jul 29 '16 at 00:12

score 2 · Accepted Answer · edited May 23 '17 at 12:22

2

You should have googled it.

You can use these examples if your objects implements Parcelable or Serializable. Unfortunaley it is not possible to send an object be reference. You can get around this problem be sending te object back:

returning the object:

Intent result = new Intent();
result.putExtra("NAME", myEditedObject);
setIntent(result);
setResult(Activity.RESULT_OK);
finish();

reading the returned object:

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    // Check which request we're responding to
    if (requestCode == MY_REQUEST_CODE) {
        // Make sure the request was successful
        if (resultCode == RESULT_OK) {
            Bundle b = this.getIntent().getExtras();
            if (b != null)
                myObject= (MyObject) b.getParcelable(STRING_NAME);
        }
    }
}

edited May 23 '17 at 12:22

Community

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answered Jul 28 '16 at 18:55

Robin Dijkhof

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Thumbs up for many good ?thises?! – Nir Duan Jul 28 '16 at 19:02
Thank , but I want to pass by reference between class , putExtra is pass by value not pass by reference. – Wuttipong Khemphetjetsada Jul 28 '16 at 19:13
Thankyou very much, I will try it. – Wuttipong Khemphetjetsada Jul 29 '16 at 08:47

score 0 · Answer 2 · answered Jul 28 '16 at 18:55

0

If your object implements Parcelable or Serializable, then the answer is yes. Just put the object in the intent that you're going to use to display the activity.

answered Jul 28 '16 at 18:55

Lino

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Can object that implement Parcelable or Serializable pass by reference between activity ? – Wuttipong Khemphetjetsada Jul 28 '16 at 19:12
@WuttipongKhemphetjetsada by reference you can only pass `Binder` objects – pskink Jul 28 '16 at 19:14
Ok, thankyou do you have example ? – Wuttipong Khemphetjetsada Jul 28 '16 at 19:15
1

@WuttipongKhemphetjetsada see `Bundle#putBinder(String key, IBinder value)` – pskink Jul 28 '16 at 19:16
Thankyou verymuch , @pskink – Wuttipong Khemphetjetsada Jul 28 '16 at 19:17

How I pass by refernece object between activity in Android

2 Answers2