NullPointerException while using Parse

Question

When i call Parse method getList("some column") i always get NullPointerException. What should i do to avoid it? Here is some code

ParseObject someObj = new ParseObject("Some table");
someObj.put("some column", "some text");
someObj.saveInBackground();

List<String> someList = someObj.getList("some column");
Toast.makeText(getApplicationContext(), someList.get(0), Toast.LENGHT_LONG).show()

parce.com is unreachable i think you mean't parse.com, if so the class name is ParseObject and not ParceObject. — issathink
– issathink, Commented Dec 20, 2014 at 23:18
If there are spelling errors in the code in your question, that suggests you copied it by hand, instead of copy/pasting. That's not a very good idea: it makes errors more likely, and errors make it hard to help you. — chiastic-security
– chiastic-security, Commented Dec 20, 2014 at 23:28

albciff · Accepted Answer · 2014-12-20 23:33:07Z

2

I think that you're not getting a NPE in List<String> someList = someObj.getList("some column"); I think that getList is returning null and you're getting the NPE when you try to get the first element on this list in the follow line: someList.get(0).

In ParseObject api for android:

getList returns null if there is no such key or if the value can't be converted to a List

So since you're setting a string some text value for some column key in someObj.put("some column", "some text"), you can't get this value as List using getList("some column"), so simply use get("some column") instead.

answered Dec 20, 2014 at 23:33

albciff

18.6k4 gold badges67 silver badges94 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Paul Boddington Over a year ago

No, someList.get(0) would throw an IndexOutOfBoundsException if it had size 0.

albciff Over a year ago

@pbabcdefp getList not returns a list of size 0, returns null, so get(0) on null object throws NullPointerException not IndexOutOfBoundsException.

Collectives™ on Stack Overflow

NullPointerException while using Parse

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related