menuitem

I'm building an Android application and I'm trying to build a user management system where users can login, logout, etc. I want to display a login menu item if the user is logged out and a logout button if the user is logged in. How can I do this dynamically? This is the layout file right now: <?xml version="1.0" encoding="utf-8"?> <menu xmlns:android="http://schemas.android.com/apk/res/android"> <item android:id="@+id/add" android:title="Add" android:icon="@drawable/ic_menu_add"/> <item android:id="@+id/list" android:title="List" android:icon="@drawable/ic_menu_list"/> <item android:id="@+id

I can easily do it when I am using onCreateOptionsMenu or onOptionsItemSelected methods. But I have a button somewhere in screen, and on clicking that button, it should enable/disable context menu items. Vikas Anyway, the documentation covers all the things. Changing menu items at runtime Once the activity is created, the onCreateOptionsMenu() method is called only once, as described above. The system keeps and re-uses the Menu you define in this method until your activity is destroyed. If you want to change the Options Menu any time after it's first created, you must override the

When I create a table in SQL Server and save it, if I try to edit the table design, like change a column type from int to real, I get this error: Saving changes is not permitted. The change you have made requires the following table to be dropped and re-created. You have either made changes to a table that can't be recreated or enabled the option prevent saving changes that require the table to be re-created. Why do I have to re-create the table? I just want to change a data type from smallint to real . The table is empty, and I didn't use it until now. Robert Harvey From Save (Not Permitted)