Android中onContextItemSelected不响应

Android中onContextItemSelected不响应是怎么回事？
在实现一个ContextualMenu时，onCreateContextMenu()是成功执行了的，但长按显示出上下文菜单时，点击其中一个item，onContextItemSelected()中的内容并没有被执行，请问这是为什么？

publicclassMainActivityextendsActionBarActivity{

@Override
protectedvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

TextViewtv=(TextView)findViewById(R.id.hint);
tv.setText("thisisatextview");
registerForContextMenu(tv);

}

publicbooleanonContexItemSelected(MenuItemitem){
super.onContextItemSelected(item);
Log.d("ContextMenu",item.getTitle()+"isselected!");
Toast.makeText(this,"Hleele;",Toast.LENGTH_LONG).show();
returnfalse;

}


publicvoidonCreateContextMenu(ContextMenumenu,Viewv,
ContextMenuInfomenuInfo){
super.onCreateContextMenu(menu,v,menuInfo);
MenuItemcmitem1=menu.add(0,Menu.FIRST,Menu.NONE,"item1");
MenuItemcmitem2=menu.add(0,Menu.FIRST+1,Menu.NONE,"item2");
MenuItemcmitem3=menu.add(0,Menu.FIRST+2,Menu.NONE,"item3");
/*cmitem1.setCheckable(true)
.setChecked(true);
cmitem2.setCheckable(true);
cmitem3.setCheckable(true);*/

}

@Override
publicbooleanonCreateOptionsMenu(Menumenu){
//Inflatethemenu;thisaddsitemstotheactionbarifitispresent.
getMenuInflater().inflate(R.menu.main,menu);
returntrue;
}


@Override
publicbooleanonOptionsItemSelected(MenuItemitem){
//Handleactionbaritemclickshere.Theactionbarwill
//automaticallyhandleclicksontheHome/Upbutton,solong
//asyouspecifyaparentactivityinAndroidManifest.xml.
intid=item.getItemId();
if(id==R.id.action_settings){
returntrue;
}
returnsuper.onOptionsItemSelected(item);
}
}

------解决方案--------------------
onContexItemSelected返回true

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