ListView items not responding to tap
- by Justin Williams
I'm just getting my feet wet with Android and have built a UI that contains a TabHost with three tabs. Each tab is powered by its own Activity. The first Tab contains a listview with a prepopulated set of rows and is built from a custom ArrayAdapter.
The problem I'm running into is that none of the ListView rows are tappable. In other words, when I tap on them there is no orange selection. If I use the scroll ball on my Nexus One it will select, but any touch gestures don't seem to be responding.
All the UI is being handled using XML files with a main.xml housing the TabHost - LinearLayout - TabWidget/FrameLayout and a nearby_activity.xml file containing my ListView UI
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:id="@+id/android:empty"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="@string/nearby_no_events"
/>
<ListView
android:id="@android:id/list"
android:layout_width="fill_parent"
android:layout_height="0dip"
android:layout_weight="1.0"
android:choiceMode="multipleChoice"
android:divider="#d9d9d9"
android:dividerHeight="1px"
android:cacheColorHint="#eee"
/>
</LinearLayout>
And the relevant code from my Activity that is set to show in the selected tab.
public class NearbyActivity extends ListActivity
{
private ArrayList<Event> m_events = null;
private EventAdapter m_adapter = null;
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.nearby_activity);
getEvents();
this.m_adapter = new EventAdapter(this, R.layout.eventrow, m_events);
setListAdapter(this.m_adapter);
}
private void getEvents()
{
m_events = new ArrayList<Event>();
for (int i = 0; i < 100 ; i++)
{
Event e = new Event();
e.setEventName("Event " + i);
e.setVenueName("Staples Center");
e.setStartDate(new Date());
m_events.add(e);
}
}
private class EventAdapter extends ArrayAdapter<Event>
{
private ArrayList<Event> items;
public EventAdapter(Context context, int textViewResourceId, ArrayList<Event> items)
{
super(context, textViewResourceId, items);
this.items = items;
}
@Override
public View getView (int position, View convertView, ViewGroup parent)
{
View v = convertView;
if (v == null)
{
LayoutInflater vi = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(R.layout.eventrow, null);
}
Event e = items.get(position);
if (e != null)
{
TextView nameText = (TextView)v.findViewById(R.id.eventName);
TextView venueNameText = (TextView)v.findViewById(R.id.venueName);
if (nameText != null)
{
nameText.setText(e.getEventName());
}
if(venueNameText != null)
{
venueNameText.setText(e.getVenueName());
}
}
return v;
}
}
}
My listview row's are populated by an XML file as well.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="?android:attr/listPreferredItemHeight"
android:orientation="vertical"
android:padding="4dip">
<TextView
android:id="@+id/eventName"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:inputType="text"
android:singleLine="true"
android:ellipsize="marquee"
android:textSize="18sp"
android:textColor="#000"
/>
<TextView
android:id="@+id/venueName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/eventName"
android:layout_alignParentBottom="true"
android:layout_marginRight="55dip"
android:singleLine="true"
android:ellipsize="end"
android:scrollHorizontally="true"
android:textSize="13sp"
android:textColor="#313131"
android:layout_alignWithParentIfMissing="true"
android:gravity="center_vertical"
/>
</RelativeLayout>
Thanks for any help you can offer.
