Menu and Back button Not working together?

From home page I go to to Category List page with bellow code

this.nav.push(AppCategoryListPage)

I write

 <ion-navbar *navbar>
    <button menuToggle>
        <ion-icon name="menu"></ion-icon>
    </button>
    <ion-title>Menu</ion-title>

</ion-navbar>

In the top of Category List page .

But menu icon or back button not showing in nav-bar. I don’t understand what’s going wrong?