HarmonyOS 鸿蒙Next resourceManager.getStringByNameSync的小问题

HarmonyOS 鸿蒙Next resourceManager.getStringByNameSync的小问题 预览器里为何显示为空白呢？

@Entry
@Component
struct Text3 {
  @State message: string = getContext(this).resourceManager.getStringByNameSync("test");

  build() {
    Column() {
      Text(this.message)
        .fontSize(50)
        .fontWeight(FontWeight.Bold)
    }
    .height('100%')
    .width('100%')
  }
}

{
  "string": [
    {
      "name": "module_desc",
      "value": "module description"
    },
    {
      "name": "EntryAbility_desc",
      "value": "description"
    },
    {
      "name": "EntryAbility_label",
      "value": "label"
    },
    {
      "name": "test",
      "value": "测试"
    }
  ]
}