private fun getRaidType(): List<SelectItem<String>> {var list = raidTyperaidType.forEach{Log.i("DHG","raidType is $it")}list.forEach{Log.i("DHG","list raidType is $it")}viewModel.diskInfo?.value?.forEach {if (list.contains(it.disktype)) {list.remove(it.disktype)Log.i("DHG","list remove is ${it.disktype}")}}list.map {SelectItem(it, false)}.apply {return this}}

然后定义raidtype的class

object DiskConstant {var raidType: MutableList<String> = mutableListOf(DiskType.RAID0.s,DiskType.RAID1.s,DiskType.RAID5.s,DiskType.RAID10.s)

当getRaidType（）运行过一次list remove了数值 第二次再调用的时候 raidtype的值会改变

java跟c++一样如果不是基本数据类型是值拷贝其他用=赋值都是引用拷贝

正确的写法是 新建一个list 的临时变量

   private fun getRaidType(): List<SelectItem<String>> {var list =  mutableListOf(DiskType.RAID0.s,DiskType.RAID1.s,DiskType.RAID5.s,DiskType.RAID10.s)viewModel.diskInfo?.value?.forEach {if (list.contains(it.disktype)) {list.remove(it.disktype)}}list.map {SelectItem(it, false)}.apply {return this}}