2019-05-23 Kotlin中的列表排序

1.正序

val list: MutableList<CommentBean> = mutableListOf()
list.sortByDescending { it.time }

2.倒序

val list: MutableList<CommentBean> = mutableListOf()
list.sortByDescending { it.time }

data class CommentBean(
  var id: Long = 0,
  var userBean: UserBean,
  var content: String = "",
  var praiseNum: Int = 0,
  var score: Double = 0.0,
  var time: Long = 0L,
  var isPraise: Boolean = false,
  var commentList: MutableList<CommentBean> = mutableListOf(),
  var commentSize: Int = 0
)

data class UserBean(
  var uid: Long,
  var head: String? = null,
  var gender: String? = null,
  var age: String? = null,
  var birth: String? = null,
  var city: String? = null,
  var id: String? = null,
  var desc: String? = null,
  var headBg: String? = null,
  var name: String? = null
)