Order items in a Multi Values Listview in Android

I'm looking to some way for sort my items inside my listview. Which is a multi values Listview with 3 items for each row. I use a Custom ListViewAdapter to achieve this, but they are sorted in order of introduction inside the ArraysList. Something like:

1-2-3-4-5-6....


I want to inverse this order, having in top of my Listview the last item introduced:

6-5-4-3-2-1....


Here is my Custom ListViewAdapter:

public class ListViewAdapter extends BaseAdapter
static class ViewHolder
TextView number;
TextView elapsedTime;
TextView totalTime;


public static final String FIRST_COLUMN="First";
public static final String SECOND_COLUMN="Second";
public static final String THIRD_COLUMN="Third";

public ArrayList<HashMap<String, String>> list;
Activity activity;

public ListViewAdapter(Activity activity,ArrayList<HashMap<String, String>> list)
super();
this.activity=activity;
this.list=list;


@Override
public int getCount()
// TODO Auto-generated method stub
return list.size();


@Override
public Object getItem(int position)
// TODO Auto-generated method stub
return list.get(position);


@Override
public long getItemId(int position)
// TODO Auto-generated method stub
return 0;




@Override
public View getView(int position, View convertView, ViewGroup parent)
// TODO Auto-generated method stub

LayoutInflater inflater=activity.getLayoutInflater();
final ViewHolder viewHolder;

if(convertView == null)
convertView = inflater.inflate(R.layout.timer_row, null);
viewHolder = new ViewHolder();
viewHolder.number = (TextView) convertView.findViewById(R.id.number);
viewHolder.elapsedTime = (TextView) convertView.findViewById(R.id.elapsed_time);
viewHolder.totalTime =(TextView) convertView.findViewById(R.id.total_time);
convertView.setTag(viewHolder);

else
viewHolder = (ViewHolder) convertView.getTag();


HashMap<String, String> map=list.get(position);
viewHolder.number.setText(map.get(FIRST_COLUMN));
viewHolder.elapsedTime.setText(map.get(SECOND_COLUMN));
viewHolder.totalTime.setText(map.get(THIRD_COLUMN));

return convertView;




And here is how I call it in my activity:

//ListView Adapter
mListviewLayout = (RelativeLayout)v.findViewById(R.id.listview_times_layout);

mTimesListview = (ListView)v.findViewById(R.id.times_listview);
mTimesArrayList = new ArrayList<HashMap<String,String>>();
mListViewAdapter= new ListViewAdapter(mActivity, mTimesArrayList);
mTimesListview.setAdapter(mListViewAdapter);


Finally, here is how I introduce items inside the Hashmap:

btnNextCicle.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
if (isTimerPaused())
onTimerStop();
else
mListviewLayout.setVisibility(View.VISIBLE);
mCiclesCounter++;
HashMap<String, String> newEntry = new HashMap<String, String>();
newEntry.put(ListViewAdapter.FIRST_COLUMN, "#" + mCiclesCounter);
newEntry.put(ListViewAdapter.SECOND_COLUMN, Util.getTimeForTimer(mElapsedCicleTime));
newEntry.put(ListViewAdapter.THIRD_COLUMN, Util.getTimeForTimer(mTimeInMilliseconds));
mCicleStartTime = SystemClock.elapsedRealtime();
mTimesArrayList.add(newEntry);


);


1 Answer
1

You can subclass HashMap<String, Sting> and make it implements Comparable. Then you can use Arrays.sort(yourComparable) to sort the array the way you want.

HashMap<String, Sting>

Comparable

Arrays.sort(yourComparable)

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