notifyDataSetChanged() - IndexOutOfBoundException

问题

I do not understand what is wrong

I am use

  public class UrlArrayAdapter extends BaseAdapter {...      
         ArrayList<UrlItem> objects;

        UrlArrayAdapter(Context context, ListView urlListView,
                ArrayList<UrlItem> urlLists) {
objects = urlLists; ...



    //method
    public void deleteItem(int numberToDelete) {        
            objects.remove(numberToDelete);      
             notifyDataSetChanged();
        }

AND (the most interesting)

I get numberToDelete = 1

This line is then removed

but objects

and when numberToDelete = 0

This line is then removed

but objects

AND when numberToDelete = 2

objects

but after notifyDataSetChanged(); IndexOutOfBoundException

I already have a post ... but I can not solve this problem

IndexOutOfBoundException when I use notifyDataSetChanged

stackoverflow.com/a/9260757/1568164 I am feeling that the situation is this, i use but not work

Then I get a position to further remove

public View getView(int position, View convertView, ViewGroup parent) {

        // Planet to display
        UrlItem urlItem = (UrlItem) this.getItem(position);
        ViewHolder viewHolder = null;

        if (convertView == null) {

            convertView = lInflater.inflate(R.layout.database_table_item, null);
            viewHolder = new ViewHolder();
            viewHolder.checkbox = (CheckBox) convertView
                    .findViewById(R.id.checkBox1);

            viewHolder.checkbox.setOnCheckedChangeListener(listener1);

            viewHolder.text = (EditText) convertView
                    .findViewById(R.id.editText1);


            viewHolder.text
                    .setOnFocusChangeListener(new OnFocusChangeListener() {
                        public void onFocusChange(View v, boolean hasFocus) {
                            int getPosition = (Integer) v.getTag();
                            if (!hasFocus) {

                                final EditText Caption = (EditText) v;
                                // urlLists
                                objects.get(getPosition).setUrl(
                                        Caption.getText().toString());
                            } else {

                                DatabaseTable.setPosition(getPosition); // This is a future for "numberToDelete"
                            }
                        }
                    });

            convertView.setTag(viewHolder);
            convertView.setTag(R.id.checkBox1, viewHolder.checkbox);
            convertView.setTag(R.id.editText1, viewHolder.text);

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

        }
        viewHolder.text.setTag(position);
        viewHolder.text.setText(urlItem.getUrl());
        viewHolder.checkbox.setTag(position);
        viewHolder.checkbox.setChecked(urlItem.getUse());

        return convertView;

    }

My basis Activity where I call the removal line

public class DatabaseTable extends Activity {
    private Settings setting;
    private ArrayList<UrlItem> urlLists;
    private ListAdapter uAdapter;
    private ListView urlListView;
    static int position;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.database_table_list);
        LBD conection = new LBD(this);
        conection.open();
        setting = conection.tblSettings();
        setting.create();
        urlLists = setting.selectRssTable();
        urlListView = (ListView) findViewById(R.id.listView1);
        uAdapter = new UrlArrayAdapter(DatabaseTable.this, urlListView,
                urlLists);
        urlListView.setAdapter(uAdapter);
        urlListView.setItemsCanFocus(true);
}
    public static void setPosition(int pos) {
        position = pos;
    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        menu.add(Menu.NONE, 2, 2, "Delete URL");
        return super.onCreateOptionsMenu(menu);
    }
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case 2:
        ((UrlArrayAdapter) uAdapter).deleteItem(position); 
break;

        }
        return super.onOptionsItemSelected(item);
    }

}

continuing the theme I experimented and concluded that the strings in the list of adapters have little to do with the fact that the output to the screen, so the challenge is changing. need to understand how to delete rows from the screen

回答1:

the solution was simple.

viewHolder.text
                    .setOnFocusChangeListener(new OnFocusChangeListener() {
                        public void onFocusChange(View v, boolean hasFocus) {

did not work properly, redraw the list of focus has changed and deleted lines chaotic .. agonized for a week a decision was simple, left to fix

来源：https://stackoverflow.com/questions/12002588/notifydatasetchanged-indexoutofboundexception