Unable to retrieve data and display in listview

Question

Here is my code:

public class MenuActivity extends AppCompatActivity {
ListView listview;
ArrayAdapter adapter;
ArrayList<String> mylist;
String name;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_menu);

    listview = (ListView) findViewById(R.id.listview);
    mylist = new ArrayList<>();

    parseDataFetch();


}

public void parseDataFetch()
{
    if (FragmentA.item == "first") {

        ParseQuery<ParseObject> query = ParseQuery.getQuery("menu");
        query.whereEqualTo("type", "testRow");
        query.findInBackground(new FindCallback<ParseObject>() {
            public void done(List<ParseObject> nameList, ParseException e)
            {
                if (e == null) {
                    for (ParseObject object : nameList) {
                         name = object.getString("itemName");
                        mylist.add(name);
                        adapter = new ArrayAdapter<>(MenuActivity.this, R.layout.activity_menu, mylist);
                    }
                    listview.setAdapter(adapter);
                } else {
                    Toast.makeText(getApplicationContext(), "Error", Toast.LENGTH_SHORT).show();
                    e.printStackTrace();
                }
            }
        });
    }
}
}

Only text is displayed but no images are being displayed, and its not working..

Please help, what is the problem with it as there are no errors generated.

try checking your response is coming or not, May be your response is null — N J, Mar 18 '16 at 05:09
Where you setting up the image from response ? I can only see item name — Jay Rathod, Mar 18 '16 at 05:10
Please set the adapter initialization outside the loop............. adapter = new ArrayAdapter<>(MenuActivity.this, R.layout.activity_menu, mylist); — , Mar 18 '16 at 05:15
Possible duplicate of [How do I compare strings in Java?](http://stackoverflow.com/questions/513832/how-do-i-compare-strings-in-java) — OneCricketeer, Mar 18 '16 at 05:35

score 0 · Answer 1 · answered Mar 18 '16 at 05:38

0

Other than the fact you are using == to compare strings...

Move this to onCreate

adapter = new ArrayAdapter<>(MenuActivity.this, R.layout.activity_menu, mylist);
listview.setAdapter(adapter);

Inside the loop, simply do

adapter.add(name);

answered Mar 18 '16 at 05:38

OneCricketeer

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i did that..its still not fetching data.. showing invalid session token exception.. i dropped the class and recreated it the problem still persists..i removed the string comparison line too by the way it didn't help.. – Anumita Purohit Mar 18 '16 at 08:23
That's a Parse Server error. I suggest you check your API key and Application ID values – OneCricketeer Mar 18 '16 at 08:31

Unable to retrieve data and display in listview

1 Answers1