我在 ListView 上有一个上下文菜单。
我想为登录用户添加一个特殊情况的上下文列表项。
假设有一个评论列表。但仅针对登录用户的评论，有一个名为“编辑”的特殊上下文列表项（显然您不希望其他用户能够编辑他们自己之外的评论。
这是我的类扩展应用程序，我通常在其中签入登录用户：
public class MyApp extends Application {
public static boolean isUserLoggedIn = false;
public static String username = null;
public static SharedPreferences logInState;
public static int ratescreen = 0;
public static boolean userLogin() {
return MyApp.isUserLoggedIn = true;
}
public static boolean userLogout() {
return MyApp.isUserLoggedIn = false;
}
public static void setUser(String s) {
MyApp.username = s;
}
@Override
public void onCreate() {
super.onCreate();
String PREFS_NAME = "LoginState";
logInState = getSharedPreferences(PREFS_NAME,
MODE_PRIVATE);
}
}
这是我的上下文菜单：
@Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
MenuInflater inflater = getActivity().getMenuInflater();
inflater.inflate(R.menu.reviews_context, menu);
menu.setHeaderTitle("Mark Comment as ...");
}
@Override
public boolean onContextItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.helpful:
new HelpfulTask().execute();
Toast.makeText(getActivity(), "You have voted this up!",
Toast.LENGTH_SHORT).show();
return true;
case R.id.unhelpful:
new UnHelpfulTask().execute();
Toast.makeText(getActivity(), "You have voted this down!",
Toast.LENGTH_SHORT).show();
return true;
case R.id.spam:
new SpamTask().execute();
Toast.makeText(getActivity(),
"You have reported this as Spam or Offensive.",
Toast.LENGTH_SHORT).show();
return true;
// Would like to add fourth option here but conditional if it is a comment from the currently logged in user.
}
return false;
}