【Kotlin】 列表适配器

列表的显示和操作

定义操作接口，只定义编辑和删除的功能，其他的功能可以类似扩展

/**
 * 列表中项的操作
 */
interface ItemOperatorAdapter<T> {
    /**
     * 删除
     */
    fun onDelete(t: T)

    /**
     * 编辑
     */
    fun onEdit(t: T)
}

　　定义RecyclerView列表适配器 

      定义页面的控件

   <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/rv_Content_setting_account"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/app_white" />

　　定义列表适配器

class AccoutListItemAdapter(
    private val data: List<AccountEntity>,
    private val operator: ItemOperatorAdapter<AccountEntity>
) :
    RecyclerView.Adapter<AccoutListItemAdapter.ViewHolder>() {


    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {

        return ViewHolder(
            RvAccoutContentItemBinding.inflate(
                LayoutInflater.from(
                    parent.context
                ), parent, false
            )
        )
    }

    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
        holder.bindData(data[position], operator)
    }

    class ViewHolder(private val binding: RvAccoutContentItemBinding) :
        RecyclerView.ViewHolder(binding.root) {
        fun bindData(item: AccountEntity, operator: ItemOperatorAdapter<AccountEntity>) {
          
            binding.tvPauseNumber.text = "67"

        }
    }

    override fun getItemCount(): Int {
        return data.size
    }


}

　　

mvvm绑定

val inventoryListItemAdapter = AccoutListItemAdapter(testList,
                object : ItemOperatorAdapter<AccountEntity> {
                    override fun onDelete(t: AccountEntity) {
                        val customDialog = CustomDialog(requireActivity())
                        customDialog.setsTitle("温馨提示").setsMessage("是否删除（${t.nick_name})账号？")
                            .setsCancel("取消", View.OnClickListener {
                                customDialog.dismiss()
                            }).setsConfirm("确定", View.OnClickListener {
                                viewModel.delete(t)//删除用户
                                customDialog.dismiss()
                            }).show()

                    }

                    override fun onEdit(t: AccountEntity) {
                        showEditAccountPopWindow(t)
                    }
                })
            binding.rvContentSettingAccount.adapter = inventoryListItemAdapter