getParseObject() returns null

Question

I don't know what's wrong with my code, that it always returns null when I use getParseObject().

I'm using parse.com to save my data, and in one table I used one file as a pointer. I have a Game class that has ImgName as a Pointer<Gallery> to a gallery class.

Now I want to retrieve the ImgName value, so this is what I did:

public Adapter(Context context) {
    super(context, new ParseQueryAdapter.QueryFactory<ParseObject>() {
        public ParseQuery create() {
            ParseQuery query = new ParseQuery("Game");
            query.include("ImgName");
            return query;
        }
    });
}

// Customize the layout by overriding getItemView
@Override
public View getItemView(final ParseObject object, View v, ViewGroup parent) {

    if (v == null) {
        v = View.inflate(getContext(), R.layout.list_item_landing_cards, null);
    }
    ParseObject gallery =  object.getParseObject("ImgName");
    String name=gallery.getString("name");
    TextView nameTextView = (TextView) v.findViewById(R.id.text);
    nameTextView.setText(name);

But I'm getting null all the time. Any suggestions?

Object is a newly created parseobject, how to you expect getparseobject to return anything other than null? — cYrixmorten
– cYrixmorten, Commented Jul 29, 2015 at 13:26
I updated the code , still giving me null ... please tell me what's wrong — Ran
– Ran, Commented Jul 29, 2015 at 13:32
The updated code looks more correct. Are you sure that all of your game objects has a pointer in the "ImgName" column? — cYrixmorten
– cYrixmorten, Commented Jul 29, 2015 at 17:07
Could you verify that the column name is correct and that it has a value... — kRiZ
– kRiZ, Commented Jul 30, 2015 at 22:20
Yes, that could be a cell reuse issue. Have a check to see if the value is null and then set values accordingly. — kRiZ
– kRiZ, Commented Jul 31, 2015 at 20:40

kRiZ · Accepted Answer · 2015-09-12 10:47:22Z

1

Use this for the re-use issue:

ParseObject gallery =  object.getParseObject("ImgName");
if (gallery != null) {
    String name=gallery.getString("name");
    TextView nameTextView = (TextView) v.findViewById(R.id.text);
    nameTextView.setText(name);
} else {
    nameTextView.setText(""); // or any other default value you want to set
}

NOTE: The cell re-use issue is not on Parse. Cell re-use is a general concept used by the ListView. The cells are recycled for performance by Android. We just have to protect it from re-using old values.

edited Sep 12, 2015 at 10:47

answered Sep 12, 2015 at 10:40

kRiZ

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2 Comments

Ran Over a year ago

Thanks .. do you any prove that there is re-use issue in parse ? I searched but I couldn't find

kRiZ Over a year ago

No, it's not an issue with Parse. See update to my answer.

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