AppBar(
  centerTitle: true,
  title: Text('AppBar'),
  leading: IconButton(
    onPressed: () {},
    icon: Icon(Icons.home),
  ),
  actions: [
    IconButton(
      onPressed: () {},
      icon: Icon(Icons.call),
    ),
    IconButton(
      onPressed: () {},
      icon: Icon(Icons.more_vert),
    ),
  ],
)