Adding objects to a ListView row at runtime

Question

I am trying to add elements to a ListView dynamically at runtime. Here is my code.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:id="@+id/category_row"
    android:orientation="horizontal" >
    <!-- Contents will be added at Runtime -->
</LinearLayout>

The getView function overridden by my adapter

@Override
    public View getView(final int position, final View convertView,
            final ViewGroup parent) {
        View searchResultsRow = convertView;
        LinearLayout linearLayout;
        TextView e1,e2,e3,e4;
        if (searchResultsRow == null) {
            LayoutInflater layoutInflator = (LayoutInflater) context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            searchResultsRow = layoutInflator.inflate(
                    R.layout.categories_row_object, null);
            linearLayout = (LinearLayout) searchResultsRow.findViewById(R.id.category_row);

        }
        e1 = new TextView(context);
        e2 = new TextView(context);
        e3 = new TextView(context);
        e4 = new TextView(context);

        e1 = new TextView(context);
        e1.setText("Fashion");
        linearLayout.addView(e1);

        e2 = new TextView(context);
        e2.setText("Men");
        linearLayout.addView(e2);

        e3 = new TextView(context);
        e3.setText("Casual Wear");
        linearLayout.addView(e3);


        e4 = new TextView(context);
        e4.setText("Jeans");
        linearLayout.addView(e4);


        return searchResultsRow;
    }

Now what happens that the first couple of rows seem at jumbled up. Like multiple rows have been added to the same row. What am i doing wrong ?

Kind Regards,

searchResultsRow is reused, therefore it contains all the items you have already added to it the previous time you used it. — njzk2
– njzk2, Commented Apr 10, 2013 at 15:29

Amoi · Accepted Answer · 2013-04-10 15:44:09Z

1

I am wondering if ConvertView != null, linearLayout is not initialed.

answered Apr 10, 2013 at 15:44

Amoi

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Comments

njzk2 · Accepted Answer · 2013-04-11 07:52:08Z

0

The issue here is that convertView, if not null, is a previously used view, already containing the 4 TextViews.

What you have to do is reuse the existing TextViews from convertView.

One way of doing this is as so: you are inflating categories_row_object. Put your 4 TextView in it, then access it by id.

Or, you could browse the children views of your LinearLayout.

answered Apr 11, 2013 at 7:52

njzk2

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