@Main
component Home {
  @State message: string = 'Hello World'

  onShow() {
    console.log('home--onShow')
  }

  render() {
    Row() {
      Column() {
        Text(this.message)
          .color('#000000')
          .fontSize('15px')
          .fontWeight('bold')
        Button('click')
          .width('220px')
          .height('80px') 
          .marginTop('20px')
          .onClick((params?: PlainObject) => {
            this.changeMessage()
          })
      }
      .width('100%')
      .alignItems('center')
      .justifyContent('center')
    }
    .height('100%')
  }
  
  changeMessage() {
    this.setState({ message: 'Hello Tomorrow' })
  }

}