Android get parent id in multi context menu -

in code have listener have multi context menu :

    button btn1= (button) findviewbyid(r.id.btn1);       registerforcontextmenu(btn1);        button edit_text1= (button) findviewbyid(r.id.edit_text1);       registerforcontextmenu( edit_text1 );   

now in oncontextitemselected want witch widgets must text change. example:

@override public boolean oncontextitemselected(menuitem item) {     adapterview.adaptercontextmenuinfo info = (adapterview.adaptercontextmenuinfo) item.getmenuinfo();     long buttonid = info.id;     switch ( item.getitemid () ){         case 1:             /* if user request context menu on btn1  */             btn1.settext( "ok" );             /* if user request context menu on edit_text1 */             edit_text1.settext( "" );     }     return super.oncontextitemselected(item); } 

unfortunately java.lang.nullpointerexception error info.id

update post

public void oncreatecontextmenu(contextmenu menu, view v,contextmenu.contextmenuinfo menuinfo) {     super.oncreatecontextmenu(menu, v, menuinfo);     menu.setheadertitle( r.string.choose_selection );     view_id = v.getid();     menu.add(0, view_id, 0, getresources ().getstring ( r.string.clear ) );     menu.add(0, view_id, 0, getresources ().getstring ( r.string.cut ) );     menu.add(0, view_id, 0, getresources ().getstring ( r.string.copy ) ); }  @override public boolean oncontextitemselected(menuitem item) {     log.e("itemid  ", item.getitemid ()+"");     log.e("view_id ", view_id+"");     switch ( item.getitemid () ){         case 1:             break;     }     return super.oncontextitemselected(item); } 

in oncontextitemselected , item.getitemid () , view_id same, after parent context menu how menu item id?

the getmenuinfo() method return null in case, views not attaching info menu. saving classcastexception, since views not child views of adapterview.

make buttonid class member of activity, , retrieve view passed oncreatecontextmenu() method.

private int buttonid;  @override public void oncreatecontextmenu(contextmenu menu, view v, contextmenu.contextmenuinfo menuinfo) {     buttonid = v.getid();     ... }