CODEWITHSUNDEEP
javaandroidandroid-intentarraylist
armin jodat
armin jodat

Reputation: 15

How to send an Array list to another activity

I want to send a string array list from my MainActivity to Creating activity via using intent. but it gives me some error I am dealing with it for some time-_-.

This arraylist is for adding some words. I tried putextra(); and putStringArrayListExtra();

MainActivity

Intent intent = new Intent(getApplicationContext(),creating.class);
intent.putStringArrayListExtra("w",Words);
intent.putStringArrayListExtra("m", Meanings);
startActivityForResult(intent,REQUEST_CODE);

CreatingActivity

private ArrayList<String> Words1;
private ArrayList<String> Meanings1;
@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_creating);

        Words1 = new ArrayList<String>();
        Meanings1 = new ArrayList<String>();
        Words1 = intent1.getStringArrayListExtra("w");
        Meanings1 = intent1.getStringArrayListExtra("m");

when I click the button to come to this activity, this error appears:

java.lang.NullPointerException: Attempt to invoke virtual method 'java.util.ArrayList android.content.Intent.getStringArrayListExtra(java.lang.String)' on a null object reference

Upvotes: 1

Views: 406

Answers (1)

Maulik Togadiya
Maulik Togadiya

Reputation: 591

I thing You are missing something it should be like:

 Words1 = getIntent().getStringArrayListExtra("w");
 Meanings1 = getIntent().getStringArrayListExtra("m");

Right? And if still you are facing issue try to debug because i think your way is correct.

Upvotes: 1

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