Bundle extra is returning NULL

Question

I'm having a problems.

In a class "A" I have the code:

Intent cInt = new Intent(Add_Product_Page.this, CategoryListActivity.class);
Bundle extra = new Bundle();
extra.putBoolean("for_result", true);
startActivityForResult(cInt, GET_CATEGORY, extra);

This code is from another class that starts the activity

Bundle extra = getIntent().getExtras();

        if (extra != null) {

            isforResult = cInt.getBooleanExtra("for_result", true);
            setIsforResult(isforResult);

        } else {
            setIsforResult(false);
        }

        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setTitle("Category");

    }

I debugged Class A and I got the value of extra as true but when I am debugged another class I am getting NULL in the extra

Can anybody help me.

Thanks in advance

2 variables have same name `Bundle extra = getIntent().getExtras();` and `Intent extra = getIntent();` — W I Z A R D, Feb 03 '15 at 07:00
cInt.getBooleanExtra is that a typo it should be extra.getBooleanExtra. and why there is two extra variables? — Muthu, Feb 03 '15 at 07:00
Sorry I have editted my code. my mistake but still the value of extra is null — Priyanka, Feb 03 '15 at 07:04

RajaReddy PolamReddy · Answer 1 · 2015-02-03T08:46:40.777

0

try like this

 isforResult = extra.getBoolean("for_result", true);

and remove this Intent extra = getIntent(); line it's a duplicate instance.

edited Feb 03 '15 at 08:46

answered Feb 03 '15 at 07:00

RajaReddy PolamReddy

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score 0 · Answer 2 · answered Feb 03 '15 at 07:03

Try this

      Bundle extra = getIntent().getExtras();

        if (extra != null) {

            isforResult = extra.getBoolean("for_result", true);
            setIsforResult(isforResult);

        } else {
            setIsforResult(false);
        }

        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setTitle("Category");

    }

score 0 · Answer 3 · answered Feb 03 '15 at 07:04

Use in Activity A

Intent in = new Intent(this, RegistrationActivity.class); in.putExtra("yourKey", yourValue); startActivityForResult(in, REQUEST_CODE);

and in Activity B

Bundle b = getIntent().getExtras();
    if (b != null) {
        boolean value = getIntent().getBooleanExtra("yourKey", true);

    }

ytRino · Accepted Answer · 2016-08-25T07:27:07.233

startActivityForResult()'s 3rd argument(Bundle option) is not "extra" bundles.
See Context#startActivity(Intent, Bundle) for detail. That is launch configuration.

use Intent#putExtra(String, boolean) for boolean extras.

Intent intent = new Intent(Add_Product_Page.this, CategoryListActivity.class);
intent.putExtra("for_result", true);
startActivityForResult(intent, GET_CATEGORY);

then

boolean b = getIntent().getBooleanExtra("for_result", false);

This is equivalant to

boolean b = getIntent().getExtras().getBoolean("for_result");

Also you can check intent has extra parameter or not:

intent.hasExtra("for_result");

intent.putBoolean does not exist, intent.putExtra would be correct. — David, Aug 24 '16 at 11:43

Bundle extra is returning NULL

4 Answers4