iOS click on any out recycle keyboard

I'm in Navigationbar. Previous Search box:

Search box is not on the view, can not use Self.view can only use the window

/* * *   The controller's view is clicked, it will call * *  @param touches Object *  @param event   */-(void) Touchesbegan: (Nsset *) touches withevent: (uievent *)event{    // click anywhere, recycle keyboard , the search box is not on the view, can not use Self.view can only use the window     [Self.view.window endediting:yes];}

iOS click on any out recycle keyboard