I'm trying to create a listview where upon tapping an item the background changes color. So far my current implementation results in the "opposite" visible cell having its background changed. For example, if I chose the top item in the list, the bottom item is highlighted. Can anyone help me implement the desired functionality?
My list Activity:
public void onCreate(Bundle savedInstanceState) {
Log.e(TAG, "Starting Symptom Activity...");
super.onCreate(savedInstanceState);
setContentView(R.layout.symptom_listview);
// Setup list
this.setupSymptomScreen();
startManagingCursor(cs);
//get handle on buttons
Button nextButton = (Button) findViewById(R.id.symptom_next);
Button backButton = (Button) findViewById(R.id.symptom_goBack);
ListView lv =getListView();
lv.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
lv.setItemsCanFocus(false);
SymptomAdapter adapter = new SymptomAdapter(this,
R.layout.symptom_item, cs, new String[] { DbAdapter.KEY_SYMPTOM },
new int[] { R.id.txt_symptom });
selectedItems = new HashSet<String>();
adapter.setLookupTable(selectedItems);
setListAdapter(adapter);
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
if(!selectedItems.contains(view.toString()))
{
view.setBackgroundColor(Color.CYAN);
String symptom = ((TextView) view.findViewById(R.id.txt_symptom)).getText().toString();
selectedItems.add(symptom);
}
else
{
view.setBackgroundColor(Color.WHITE);
selectedItems.remove(view.toString());
}
}
});
nextButton.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
// import selected items into a list
importSelected();
// figure out category
process();
}
});
//List for symptom ids
symptoms_id = new ArrayList<Integer>(cs.getCount());
}
And I also have made my own adapter in which I have overridden getView
public View getView(int position, View convertView, ViewGroup parent) {
if(convertView != null){
String symptoms = ((TextView) convertView.findViewById(R.id.txt_symptom)).getText().toString();
if(!selectedItems.contains(symptoms))
convertView.setBackgroundColor(Color.WHITE);
}
return super.getView(position, convertView, parent);
}