Android: Simple GridView that displays text in the grids

Question

i'm following the example on the android tutorial about the GridView, but instead of showing image, i want to just simple show some text using a TextView. it turns out seems to be harder than i thought. it might seems like this is totally unnecessary and it doesn't have a valid use case, but i'm trying this out to just get myself familiar with the sdk.

so my code is pretty much the same as the GridView example in http://developer.android.com/guide/tutorials/views/hello-gridview.html, but instead of using a ImageAdapter, i created a dummy adapter like following:

public class MyAdapter extends BaseAdapter {

private Context context;
private String[] texts = {"aaa", "bbb", "ccc", "ddd", "eee", "fff", "eee", "hhh", "iii"};

public MyAdapter(Context context) {
    this.context = context;
}

public int getCount() {
    return 9;
}

public Object getItem(int position) {
    return null;
}

public long getItemId(int position) {
    return 0;
}

public View getView(int position, View convertView, ViewGroup parent) {
    TextView tv;
    if (convertView == null) {
        tv = new TextView(context);
        tv.setLayoutParams(new GridView.LayoutParams(85, 85));
    }
    else {
        tv = (TextView) convertView;
    }

    tv.setText(texts[position]);
    return tv;
}

it all seems valid to me, but running this gives me nothing on the screen. and there's no error message. there are some selectable/clickable (invisible) blocks if i click them, but the text is obvious not shown. i wonder is my layout doesn't have the android:text causing this problem? or anything else?

any feedback will be appreciated and thanks for your help!

Answer 1

I see GridView so I'm almost assuming that this is similar to SWT?

If so you need to show the relationship between your view and the ViewGroup parent