我在SherlockFragment中有一个listView,但是当我对适配器进行任何更改时,我无法在屏幕上更新listView。我试过:adapter.notifyDataSetChanged(),但没有成功。感谢的。
答案 0 :(得分:1)
在调用notifyDatasetChanged()之前,您应该更新传递给适配器的基础数据集;
EG:
对于ListActivity中的ArrayAdapter (“arraylist”是您用来支持ArrayAdapter的ArrayList)
arraylist.add(data);
arrayadapter = this.getListAdapter();
arrayadapter.notifyDatasetChanged();
答案 1 :(得分:0)
就个人而言,每次按下刷新按钮的用户都会重新填充listView,再次初始化Cursor
。
像这样:调用此函数......
public void repopulateListView(){
cursor = dbHelper.fetchAll();
columns = new String[] {
DBAdapter.KEY_NAME,
DBAdapter.KEY_DATE,
DBAdapter.KEY_VOTE,
DBAdapter.KEY_CREDIT
};
to = new int[] {
R.id.one,
R.id.two,
R.id.three,
R.id.four
};
dataAdapter = new SimpleCursorAdapter(
getActivity(), R.layout.YOUR_ID,
cursor,
columns,
to,
0)
{
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
final View row = super.getView(position, convertView, parent);
}
}
}
...来自Refresh
onClick:
@Override
public void onClick(View view) {
switch (view.getId()){
case R.id.refresh:{
repopulateListView();
break;
}
}
}