问题
i am trying to implement drop down menus in in actionbar, ( the count of items may very in runtime). for eg: Google map has the one.
how to implement it in android. here how the menu i'm looking for. i.e if i click on R image button i want a a drop down menu. similarly if i tap on L, left side menu should come. any idea how to do? .
I dont want sliding at all, i want a dropdown menu.
回答1:
Regarding the action bar's structure, you have two options for the left side and one for the right side.
Left side:
Enable Action bar drop-down navigation
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
or
Add a custom View as navigational element via ActionBar#setCustomView(), a Spinner in your case.
Right side:
Add only one MenuItem to the action bar as a custom Action View, a Spinner in your case.
来源：https://stackoverflow.com/questions/15116271/how-to-implement-custom-drop-down-menu-to-actionbar-in-android