NullPointerException: Attempt to invoke virtual method 'java.lang.String android.os.Bundle.getString(java.lang.String)' on a null object reference

Question

I have one activity calling another. But it keeps giving me the error "java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.os.Bundle.getString(java.lang.String)' on a null object reference".

Calling activity:

Intent intent1 = new Intent (this, buisnessProfileEdit.class);
Bundle data1 = new Bundle();
data1.putString("Restaurant Username",restaurantUsername);
startActivity(intent1);

Called activity:

Intent intentReceived = getIntent();      
Bundle data = intentReceived.getExtras();
restaurantUsername = data.getString("Restaurant Username");

Can someone help me out why this is happening?

Possible duplicate of [What is a Null Pointer Exception, and how do I fix it?](http://stackoverflow.com/questions/218384/what-is-a-null-pointer-exception-and-how-do-i-fix-it) — Phantômaxx, Apr 22 '16 at 21:32
The problem is it says my restaurantUsername is a null pointer. But I don't know why it is and how to fix it. I defined String restaurantUsername="" on top. — smart_cookie, Apr 22 '16 at 21:41
`I defined String restaurantUsername="" on top` ... of **which** Activity? — Phantômaxx, Apr 22 '16 at 21:43
add this line intent1.putExtras(data1) before startActivity, see my answer. — Jorgesys, Apr 22 '16 at 22:02

Jorgesys · Answer 1 · 2016-04-22T22:18:57.053

The real problem is that you are missing to pass the bundle via intent:

intent1.putExtras(data1);

try this:

Intent intent1 = new Intent (this, buisnessProfileEdit.class);
Bundle data1 = new Bundle();
data1.putString("Restaurant Username",restaurantUsername);
intent1.putExtras(data1);
startActivity(intent1);

even you will add a validation for this in your Called activity:

Intent intentReceived = getIntent();      
Bundle data = intentReceived.getExtras();
if(data != null){
     restaurantUsername = data.getString("Restaurant Username");
}else{
     restaurantUsername = "";
}

Attempt to invoke virtual method 'java.lang.String android.os.Bundle.getString(java.lang.String)' on a null object reference

You can´t invoke the method getString() because your bundle is null!

score 4 · Answer 2 · answered Feb 21 '18 at 22:58

Another much simpler and less verbose option is to add and get the extras from the intent itself.

In the calling activity:

Intent intent = new Intent (this, CalledActivity.class);
intent.putExtra("FOO", foo);

In the called activity:

Bundle extras = getIntent().getExtras();
String foo = extras.getString("FOO");

score 2 · Accepted Answer · answered Apr 22 '16 at 22:00

You have to add the extras to the actual Intent:

Intent intent1 = new Intent (this, buisnessProfileEdit.class);
Bundle data1 = new Bundle();
data1.putString("Restaurant Username",restaurantUsername);
intent1.putExtras(data1);
startActivity(intent1);

(PS: you have a typo in buisnessProfileEdit.)

NullPointerException: Attempt to invoke virtual method 'java.lang.String android.os.Bundle.getString(java.lang.String)' on a null object reference

3 Answers3

The real problem is that you are missing to pass the bundle via intent: