5
我不明白什么是错notifyDataSetChanged（） - IndexOutOfBoundException
我使用
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（最有趣的）
我得到numberToDelete = 1
这条线被删除
但对象 
并且当numberToDelete = 0
此行然后除去
但对象 
并且当numberToDelete = 2
个对象
但notifyDataSetChanged后（）; IndexOutOfBoundException
我已经有一个帖子...但我解决不了这个问题
IndexOutOfBoundException when I use notifyDataSetChanged
stackoverflow.com/a/9260757/1568164我觉得情况是这样的，我用但不行
然后我得到一个位置，以进一步去除
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;
}
我的基础活动，其中我打电话移除管路
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);
}
}
继续我试验，得出的结论是，在适配器列表中的字符串关系不大的事实，输出到屏幕上，这样的挑战是改变主题 。需要了解如何从屏幕上删除行
可以为您的代码添加到您的问题在当你从表中选择一个对象返回该对象的索引？ – 2012-08-17 08:50:53
我添加了请看 – 2012-08-17 09:00:01
'int position'是什么，这是所选UrlItem的索引吗？ – 2012-08-17 09:00:59