android intent extra data retrieval problem

Question

I have a wierd problem. I have the following code:

if (fbIntent.hasExtra("Link")) {
            try{
            postData[0]= fbIntent.getStringExtra("Link");
            } catch (Exception e) {Log.d("fbIntent error",e.getMessage() );} 
        }

fbIntent.hasExtra("Link") is true. So the compiler goes into the if statement. But I am not able to get the string using fbIntent.getStringExtra("Link"). This I know from debugging in eclipse. When I run it, I get :

01-21 14:12:01.030: ERROR/AndroidRuntime(311): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.examples.Kikin/com.examples.Kikin.FacebookLogin}: java.lang.NullPointerException: println needs a message

Please help me.

Need to see more of the code. Also, the stack trace should tell you what line exactly the NPE is occuring on. — EboMike, Jan 21 '11 at 19:33
I changes the initialization to arbitrary values. Now it seems to be working. could you tell me why is this? — Brahadeesh, Jan 21 '11 at 19:39
You need to be more specific. "The initialization"? "Arbitrary values"? Can you post code of what you're referring to? — EboMike, Jan 21 '11 at 20:02
String [] postData={"http://www.kikin.com","Brian","Interesting Info"}; This is what I initialized to rather than null. — Brahadeesh, Jan 21 '11 at 20:12
Well yeah, when postData is null, postData[0] will crash. You'd need to at least say `String[] postData = new String[1]`. — EboMike, Jan 21 '11 at 20:16

score 0 · Answer 1 · answered Jan 21 '11 at 20:16

0

You need to initialize postData. Try something like String[] postData = new String[1]. Obviously, if you want use postData[1], [2], and [3], you'd need to say new String[4].

answered Jan 21 '11 at 20:16

EboMike

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score 0 · Answer 2 · answered Jan 21 '11 at 21:02

0

1) Your current issue is in

Log.d("fbIntent error", e.getMessage());

e.getMessage() may return null, so you get the java.lang.NullPointerException: println needs a message. Use e.toString() instead. Or the best way would be:

Log.e("some tag", "some comment", e);

2) When you fix this, you will be able to see the actual error to go further in fixing your root/real issue. So feel free to update your post with new log data.

answered Jan 21 '11 at 21:02

Vit Khudenko

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That was not my issue. Thank you for the information though. I changed all my getMessage() to toString(). – Brahadeesh Jan 21 '11 at 21:34

android intent extra data retrieval problem

2 Answers2