package com.example.firstapp.adapter
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import android.view.LayoutInflater
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import android.view.View
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import android.view.ViewGroup
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import android.widget.TextView
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import androidx.recyclerview.widget.RecyclerView
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import com.example.firstapp.R
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import com.example.firstapp.database.entity.Code
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import androidx.recyclerview.widget.ListAdapter
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class MyAdapter : ListAdapter<Code, MyAdapter.ViewHolder>(CodeDiffCallback()) {
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class ViewHolder(view: View) : RecyclerView.ViewHolder(view) {
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val tvTitle: TextView = view.findViewById(R.id.tvTitle)
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val tvDescription: TextView = view.findViewById(R.id.tvDescription)
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val overTimeMsg: TextView = view.findViewById(R.id.overTimeMsg)
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}
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override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
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val view = LayoutInflater.from(parent.context)
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.inflate(R.layout.item_layout, parent, false)
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return ViewHolder(view)
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}
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override fun onBindViewHolder(holder: ViewHolder, position: Int) {
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val item = getItem(position) // 使用 getItem 来获取当前位置的 item
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holder.tvTitle.text = item.type // 假设 Code 类有一个 `type` 属性
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holder.tvDescription.text = item.code // 假设 Code 类有一个 `code` 属性
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var overtime = "请注意：当前取件免费截止时间是"+item.overtime+",超时会收取额外费用"
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holder.overTimeMsg.text = overtime
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println("打印......")
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}
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// 使用 DiffUtil 来优化列表更新
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class CodeDiffCallback : androidx.recyclerview.widget.DiffUtil.ItemCallback<Code>() {
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override fun areItemsTheSame(oldItem: Code, newItem: Code): Boolean {
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return oldItem.id == newItem.id // 假设 Code 类有唯一的 id 字段
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}
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override fun areContentsTheSame(oldItem: Code, newItem: Code): Boolean {
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return oldItem == newItem // 如果内容相同，返回 true
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}
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}
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}
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