我尝试通过 android 开发文档中的书来做到这一点:
// this didn't create a menu, i don't know why
//registerForContextMenu(getListView());
setListAdapter(new ArrayAdapter<Note>(this, R.layout.selectset_listitem) {
@Override
protected View getView(...) {
... custom layout ...
// this creates a menu, but...
registerForContextMenu(convertView);
return convertView;
}
}
And the onCreateContextMenu
and onContextItemSelected
几乎完全一样http://developer.android.com/guide/topics/ui/menus.html#context-menu http://developer.android.com/guide/topics/ui/menus.html#context-menu.
这是它在文档(和我的代码)中的样子:
@Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.context_menu, menu);
}
但这部分总是给我一个空信息:
public boolean onContextItemSelected(MenuItem item) {
AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
...
}
唯一真正独特的是我有一个列表项的自定义布局(即几个文本字段和一个图像)。我需要做些什么才能获取为其构建上下文菜单的列表项的索引吗?