如何实现右边不动，左边自适应的布局

@Entry 
@Component 
struct Index { 
  build() { 
    Column() { 
      Text('ArkTS布局') 
        .width('100%') 
        .height(50) 
        .backgroundColor(Color.Black) 
        .fontColor(Color.White) 
      Text('其他').layoutWeight(1) 
      Row() { 
        Text('已选中100件物品') 
          .backgroundColor(0x003456).fontSize(20).fontColor(0xff6600).textAlign(TextAlign.Start).padding({left:16}) 
          .layoutWeight(1).height(55) 
        Text('确定') 
          .backgroundColor(0xD2B48C).fontSize(16).fontColor(0xffffff).textAlign(TextAlign.Center) 
          .width(100).height(55) 
      }.size({ width: '100%', height: 55 }) 
    } 
  } 
}