Hi,
i'm using a ListFragment with an ExpandableListView - which is backed by a
SimpleCursorTreeAdapter - at the moment and everything was working
perfectly. I decided at a later stage to switch to the
support.v4.ListFragment to implement lateral navigation with the ViewPager
and all of a sudden the ListFragment stopped working. There is no exception
thrown or anything. The list with all the items is simply not shown. Is the
support.v4.ListFragment in any way working differently than the normal
ListFragment or am I missing something else entirely?
Here is the code for the ListFragment:
<code>public class VisuTextFragment extends ListFragment {
private Storage mStorage;
private int mFilterSensortype;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mStorage = Storage.newSQLiteDatabase(getActivity());
mFilterSensortype = -1;
setHasOptionsMenu(true);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.l_visu_text, container, false);
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
fillData();
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
super.onCreateOptionsMenu(menu, inflater);
inflater.inflate(R.menu.textvis, menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.menu_filter:
final Dialog dialog = new Dialog(getActivity());
dialog.setTitle("Filter by sensor type");
dialog.setContentView(R.layout.l_dialog_filter);
Button ok = (Button) dialog.findViewById(R.id.filter_ok);
ok.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
int filter = Integer.parseInt(((EditText)
dialog.findViewById(R.id.et_filter)).getText().toString());
mFilterSensortype = filter;
fillData();
dialog.dismiss();
}
});
Button cancel = (Button)
dialog.findViewById(R.id.filter_cancel);
cancel.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
dialog.cancel();
}
});
dialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
dialog.show();
break;
}
return true;
}
@Override
public void onResume() {
super.onResume();
fillData();
}
public void fillData() {
Log.d("VisuTextFragment", "fillData()");
Cursor cursor;
if (mFilterSensortype == -1)
cursor = mStorage.queryAllAsCursor();
else
cursor = mStorage.query(mFilterSensortype);
TextVisCursorAdapter adapter = new TextVisCursorAdapter(
getActivity(),
cursor,
R.layout.l_visu_text_group,
new String[] { Storage.ELEMENT_ID,
Storage.ELEMENT_ENTRIES_DATE, Storage.ELEMENT_ENTRIES_LATITUDE,
Storage.ELEMENT_ENTRIES_LONGITUDE, Storage.ELEMENT_ENTRIES_SENSORTYPE },
new int[] { R.id.id, R.id.date, R.id.latitude,
R.id.longitude, R.id.sensortype },
R.layout.l_visu_text_child,
new String[] { Storage.ELEMENT_MEASUREMENTS_VALUE },
new int[] { R.id.value });
ListView lv = (ListView) getListView();
ExpandableListView elv = (ExpandableListView) lv;
elv.setGroupIndicator(null);
elv.setAdapter(adapter);
}
}</code>
And this is the layout file:
<code><LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android";
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="@string/id"/>
<TextView
android:gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="2"
android:text="@string/date"/>
<TextView
android:gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="2"
android:text="@string/latitude"/>
<TextView
android:gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="2"
android:text="@string/longitude"/>
<TextView
android:gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="@string/sensortype"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ExpandableListView android:id="@+id/android:list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:transcriptMode="normal"/>
<TextView android:id="@+id/android:empty"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/no_entries"/>
</LinearLayout>
</LinearLayout></code>
Just FYI: All the TextView's before the ExpandableListView are shown just
fine. It's only the ExpandableListView that is not being drawn.
Best regards,
Minh Bui
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