why does my android spinner display the radio button in the textview?

Question

i have a spinner with an arrayadapter that is dynamically managed. when it gets displayed, the spinner text also displays the radio button. how do i get rid of this radio button? the drop down arrow is all strecthed and yucky... thats my problem. NOTE: i'm not talking about the radio buttons that appear in the list that is displayed when i select the drop down on the spinner.

here are the appropriate code snippet... couple of points:

• this code is in the constructor of widget which is a subclass of Spinner
• value is an array of Object instances (passed when the widget gets created)
• there are no XML resources; all widgets are dynamically created
• thinking i need to "manipulate" the prompt, i added setPrompt(...) in the constructor and also in the onitemclicked event listener... this had no effect.

Q: what am i missing? seems to me i'm missing some attribute of the Spinner which is causing the radio button to also display in the text part of the spinner.

-- snip code --

public class ChoiceGroupImpl extends Spinner implements OnItemSelectedListener {
    public ChoiceGroupImpl(Activity activity, WidgetContainer container, Value widget, AttributeImpl attributes, Object[] value, int selected) {
...
        adapter = new ArrayAdapter<CharSequence>(activity, R.layout.simple_spinner_dropdown_item);
        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

        for (int i = 0; i < value.length; i++)
            adapter.add(value[i].toString());
        if (attributes.isReadonly())
            setEnabled(false);
        setAdapter(adapter);
        setSelection(selected);
        setPrompt(adapter.getItem(selected));
        setOnItemSelectedListener(this);
...
}
    public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
        setPrompt(adapter.getItem(position));
        ((ToolkitImpl) Toolkit.getInstance()).hiddenCommand(container, "SelectionChanged");
    }
...

-- end snip code --

Answer 1

If you want to keep radio button in the spinner, but not in the textview then do this:

adapter = new ArrayAdapter<CharSequence>(activity, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

Answer 2

创建适配器时，使用simple_spinner_item而不是simple_spinner_dropdown_item

adapter = new ArrayAdapter<CharSequence>(activity, R.layout.simple_spinner_item);