Firstly, create a global Menu
variable (outside of any method, but inside the class):
private Menu menu;
Then, in onCreateOptionsMenu(Menu menu)
, assign that menu to be your menu, like so:
@Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
this.menu = menu; // here
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.activity_main, menu); // inflate your menu resource
return true;
}
Then, you can use the .add(int groupId, int itemId, int order, CharSequence title)
method to add the EditText text to your options menu, like so:
// in your Button click listener:
EditText et = (EditText)findViewById(R.id.et);
if (et.length() > 0) {
int NEW_MENU_ID = 2352; // arbitrary number
menu.add(0, NEW_MENU_ID, 0, et.getText().toString());
}
And then it's done.