Kotlin 适配器删除项目

Question

我试图从我的列表中删除项目，但出现以下错误

Unresolved reference. None of the following candidates is applicable because of receiver type mismatch:
public inline fun <T> MutableCollection<out TypeVariable(T)>.remove(element: TypeVariable(T)): Boolean defined in kotlin.collections
public inline fun <T> MutableList<TypeVariable(T)>.remove(index: Int): TypeVariable(T) defined in kotlin.collections
public inline fun <K, V> MutableMap<out TypeVariable(K), TypeVariable(V)>.remove(key: TypeVariable(K)): TypeVariable(V)? defined in kotlin.collections

Code

class EducationsAdapter(val context: Context?, private var educationList: MyEducations) : RecyclerView.Adapter<EducationsAdapter.EducationsAdapterViewHolder>() {

  override fun getItemCount()= educationList.data.size
  // other functions...


  override fun onBindViewHolder(holder: EducationsAdapter.EducationsAdapterViewHolder, position: Int) 
  {
    holder.educationDelete.setOnClickListener {
      deleteMyEducations(currentItem.id, position)
    }
  }
  
  //delete  
  private fun deleteMyEducations(id: String, position: Int) {
    // ".remove" is returning error above
    educationList.remove(position)
    notifyDataSetChanged()
  }

}

有什么建议吗？

更新

我的MyEducationsclass（渲染数据来自服务器）

data class MyEducations(
    val data: List<Education>,
    val message: String
) { }

data class Education(
    val id: String,
    val start: String,
    val end: String,
    val title: String,
    val body: String,
    val user: User,
    val created_at: String,
    val updated_at: String,
) {}

更新 2

我做了以下更改

// add
val list = mutableListOf<MyEducations>()


private fun deleteMyEducations(id: String, position: Int) {
  //changed to
  list.remove(educationList.data[position])
  notifyDataSetChanged()
}

它所做的是快速删除项目（意思：不到一秒钟我的项目被删除并再次返回列表）！

Answer 1

您应该可以使用以下内容进行删除：

class EducationListAdapter: RecyclerView.Adapter<EducationListAdapter.EducationViewHolder>() {
    var educationList: MutableList<Education> = mutableListOf()

    override fun onBindViewHolder(holder: EducationViewHolder, position: Int) {
        val current = educationList.toList()
        holder.view.setOnClickListener {
            educationList.remove(current[position])
            notifyItemRemoved(position)
        }
    }
}

Answer 2

试试

val list = mutableListOf<MyEducations>()

private fun deleteMyEducations(id: String, position: Int) {
  list.removeAt(position)
  notifyDataSetChanged()
}

Answer 3

已解决

//changed my list to `ArrayList<Education>`
class EducationsAdapter(val context: Context?, private var educationList: ArrayList<Education>) : RecyclerView.Adapter<EducationsAdapter.EducationsAdapterViewHolder>() {

  // and my delete code to
  private fun deleteMyEducations(id: String, position: Int) {
    educationList.removeAt(position)
    notifyItemRemoved(position)
    notifyItemRangeChanged(position, educationList.size)
    notifyDataSetChanged()
  }
}

此外，我还必须将 class 更改为 ArrayList

data class MyEducations(
    val data: ArrayList<Education>,
    val message: String
) { }

Kotlin 适配器删除项目

Kotlin adapter remove item

android

android-adapter

kotlin

android-recyclerview

更新

更新 2

已解决