Android : clear listview in Listadapter [duplicate

问题:

This question already has an answer here:

Closed 7 years ago.

Possible Duplicate:
how to clear my listview in android

In android, i have used a listadapter, simple adapter and passed an array and i want to clear the listview contents? Instead of clearing , it is appending the records to my listview.

回答1:

Grab my Custom adapter from here. TestAdapter

Now add a method like this..

public void clearAdapter()
    {
        deviceNames.clear();
        selected.clear();
        notifyDataSetChanged();
    }

Now call youListAdapter.clearAdapter() from you Activity.

回答2:

Simply write listView.setAdapter(null)

回答3:

Use notifydataSetInValidated() on your adapter to notify your listview that the data set is not longer valid. or set your addapter to null : l.setAdapter(null);