在我的应用程序中,我在Listview
上注册了ContextMenu,我希望按上下文菜单点击Listview
项。例如,如果我在列表视图中有两行具有此结构:
public class StructReceiveSms{
public int userID;
public String username;
}
我的适配器可以在listview中显示用户名。现在我在下面的代码可以在列表视图上定义conext菜单:
public class FragmentSmsReceiveMaster extends Fragment {
private static final Boolean DEBUG = true;
public ArrayAdapter adapter;
private ArrayList<StructReceiveSms> receiveSmsArray;
.
.
.
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
.
.
.
smsView = (ListView) view.findViewById(R.id.listView);
smsView.setAdapter(adapter);
registerForContextMenu(smsView);
.
.
.
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) menuInfo;
String[] menuItems = getResources().getStringArray(R.array.SmsMasterContextMenu);
for (int i = 0; i < menuItems.length; i++) {
menu.add(Menu.NONE, i, i, menuItems[i]);
}
}
@Override
public boolean onContextItemSelected(MenuItem item) {
AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();
int menuItemIndex = item.getItemId();
String listItemName = adapter.getItem(info.position) + "";
/* GET CLICKED LISTVIEW ITEM AFTER CHOOSE CONTEXTMENU MENU ITEMS */
Toast.makeText(G.currentActivity, listItemName, Toast.LENGTH_SHORT).show();
return true;
}
}
现在点击上下文菜单项后,我可以通过menuItemIndex
获取用户点击的内容,但我无法获取Listview
功能中的onContextItemSelected
个项目。例如,在第一个项目上打开上下文菜单我可以获得userID
和username
并显示它。怎么做,谢谢
答案 0 :(得分:1)
由于您的适配器数据列表包含StructReceiveSms
个对象,adapter.getItem(info.position)
中的onContextItemSelected()
调用将返回上下文菜单打开的列表项,但需要将其转换为StructReceiveSms
类型。由此,您可以获得所需的userID
和username
。
public boolean onContextItemSelected(MenuItem item)
{
...
StructReceiveSms listItem = (StructReceiveSms) adapter.getItem(info.position);
String selectedName = listItem.username;
int selectedId = listItem.userID;
...
}
这假设您没有覆盖适配器的getItem()
方法以返回其他内容,但我想如果您有,则会显示出来。