我有listview,其中包含textview和按钮。当我删除listview项目并尝试向下滚动时,我得到例外:
BuildQueue eile = countryList.get(position);
例外:
02-08 19:11:04.279: E/AndroidRuntime(10509): java.lang.IndexOutOfBoundsException: Invalid index 15, size is 15
当我从listview中删除项目时,似乎我没有更新内容。我觉得ViewHolder有问题,但我不知道是什么......
我的ArrayAdapter代码:
public class MyCustomAdapter extends ArrayAdapter<BuildQueue> {
private ArrayList<BuildQueue> countryList;
public MyCustomAdapter(Context context, int textViewResourceId,ArrayList<BuildQueue> countryList) {
super(context, textViewResourceId, countryList);
this.countryList = new ArrayList<BuildQueue>();
this.countryList.addAll(countryList);
}
private class ViewHolder {
TextView code;
TextView field;
Button del;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
if (convertView == null) {
LayoutInflater vi = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = vi.inflate(R.layout.queue_buildings, null);
holder = new ViewHolder();
holder.code = (TextView) convertView.findViewById(R.id.code);
holder.field = (TextView) convertView.findViewById(R.id.field_text);
holder.del = (Button) convertView.findViewById(R.id.del_button);
convertView.setTag(holder);
holder.del.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Button del_button = (Button) v;
BuildQueue building = (BuildQueue) del_button.getTag();
countryList.remove(building);
dataAdapter.notifyDataSetChanged();
}
});
} else {
holder = (ViewHolder) convertView.getTag();
}
BuildQueue eile = countryList.get(position);
holder.code.setText(" ( Level: " + eile.getOld_level() + " to "+eile.getNew_level()+")");
holder.field.setText(eile.getNameSort());
holder.field.setTag(eile);
holder.del.setText("Delete");
holder.del.setTag(eile);
return convertView;
}
}
答案 0 :(得分:2)
您在适配器中使用了两个阵列,但只更改了其中一个阵列。
每个适配器使用getCount()
来确定应绘制多少行。 ArrayAdapter的getCount()
只是询问你传递给超级构造函数的数组的大小:super(context, textViewResourceId, countryList);
。但是你也在使用第二个本地数组,当你从countryList
getCount()
中删除一个值时,不知道发生这种情况会导致getView()
抛出一个IndexOutOfBoundsException ......
扩展BaseAdapter,或使用ArrrayAdapter的方法,如getItem()
,add()
和remove()
,并删除您的本地数据集。