android - Add dropdown on custom action bar view at left, with checkable items -

i have lot of problems development of action bar. here needs:

• i want add dropdown in action bar, using custom view because of custom comportment (animation example).

• the dropdown have accessible image button (not spinner show text area of selected element).

• the image button allow show dropdown have @ left of action bar.

• the dropdown appear have contain checkable items, and, when user check item, dropdown have not hidden (this allow user check multiple items @ once).

• my application have work android 2.3 (i'm using action bar sherlock that, specify because of can't use popupmenu on android 2.3).

i have added dropdown in action bar combining custom view (actionbar.setcustomview(...)) menu (menuinflater.inflate(...)). think code of customview not important, here code of menu :

<item     android:title="test"     android:drawable="@drawable/dropdown_icon"     android:showasaction="always">      <menu>          <item             android:id="@+id/item1"             android:title="item 1"             android:checkable="true"/>          <item             android:id="@+id/item2"             android:title="item 2"             android:checkable="true"/>          <item             android:id="@+id/item3"             android:title="item 3"             android:checkable="true"/>      </menu>  </item> 

with solution, have following problems :

• i'm not able put dropdown item @ left (it's @ right moment)
• when check item on dropdown list, dropdown hide itself. want dropdown keep showing state.

how can achieve want ?

p.s : can read, english not native language. these problems difficult explain (even in native language), if sentences not understandable, please tell me , try improve them.

i suggest doing simplest thing possible: remove actionbarsherlock related code , add own views in layout , program them animate, pop-up, show , hide.