I have a ListView with ViewSwitcher items. The goal is to tap a list item to switch between ViewSwitcher views. Tapping works as expected, but scrolling away from a tapped item and then back sometimes changes which item is displaying the second view from the ViewSwitcher.
Here is my ListView item layout, the ViewSwitcher is @+id/details:
<?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 = "wrap_content" >
<ViewSwitcher
android:id = "@+id/details"
android:layout_width = "fill_parent"
android:layout_height = "fill_parent"
android:measureAllChildren = "false" >
<!-- two views I want to switch between are here -->
</ViewSwitcher>
</RelativeLayout>
My Activity that finds @id/details and calls .showNext().
public class MyActivity extends ListActivity {
private MySQLiteOpenHelper data;
private SimpleCursorAdapter adapter;
private Cursor cursor;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
String[] FROM = { "_id", "_id", "name", "name" };
int[] TO = { R.id.my_list_id, R.id.my_list_id2, R.id.my_list_name, R.id.my_list_name_details };
data = new MySQLiteOpenHelper(this);
cursor = data.myList();
startManagingCursor(cursor);
adapter = new SimpleCursorAdapter(this, R.layout.list_item, cursor, FROM, TO);
setListAdapter(adapter);
ListView 开发者_Go百科list = getListView();
list.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> adapter, View view, int position, long id) {
ViewSwitcher item = (ViewSwitcher) view.findViewById(R.id.details);
item.showNext();
}
});
}
}
I think my problem might be that @id/details is not actually unique, so undefined behavior happens when scrolling.
If this is the case, then how can I assign a unique ID to each ViewSwitcher or find the correct ViewSwitcher to call .showNext() on?
Your wrong code is in
// Cursor/Adapter code here to populate list from SQLite DB.
Please post the code
However here are some Hints
- Extend ArrayAdapter
- Add an ArrayList with all the items inside
- Keep in this ArrayList the status of each ViewSwitcher
A simple way would be to make the ArrayList an ArrayList of ViewSwitchers
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