如何设置ListViewItem选中的背景色？

.selected {
  background-color: #f0f0f0;
}

<ListView>
  <ListViewItem @click="selectItem" :class="{ 'selected': selectedItem === item }" v-for="item in items" :key="item.id">
    {{ item.name }}
  </ListViewItem>
</ListView>

data() {
  return {
    items: [
      { id: 1, name: 'Item 1' },
      { id: 2, name: 'Item 2' },
      { id: 3, name: 'Item 3' }
    ],
    selectedItem: null
  };
},
methods: {
  selectItem(item) {
    this.selectedItem = item;
  }
}