94 lines
4.3 KiB
Kotlin
94 lines
4.3 KiB
Kotlin
package com.zjgsu.jianshu
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import android.content.Intent
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import android.graphics.Bitmap
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import android.graphics.BitmapFactory
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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.ImageView
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import android.widget.LinearLayout
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import android.widget.TextView
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import androidx.core.content.ContextCompat
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import androidx.recyclerview.widget.RecyclerView
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import cn.bmob.v3.BmobQuery
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import cn.bmob.v3.exception.BmobException
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import cn.bmob.v3.listener.FindListener
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import com.zjgsu.jianshu.Bmob.Book_bmob
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import java.io.InputStream
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import java.net.HttpURLConnection
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import java.net.URL
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class BookAdapter(var bookList: List<Book>) : RecyclerView.Adapter<BookAdapter.ViewHolder>() {
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inner class ViewHolder(view: View) : RecyclerView.ViewHolder(view) {
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val bookList_Image: ImageView = view.findViewById(R.id.book_Image)
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val bookList_Name: TextView = view.findViewById(R.id.book_Name)
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val bookList_Introduce: TextView = view.findViewById(R.id.book_Introduce)
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val innerLinearLayout: LinearLayout = view.findViewById(R.id.bookItem_innerLinearLayout)
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val outerLinearLayout:LinearLayout=view.findViewById(R.id.bookItem_outerLinearLayout)
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val rankimg:ImageView=view.findViewById(R.id.bookItem_rankimg)
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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).inflate(R.layout.book_item, 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 book = bookList[position]
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holder.bookList_Name.text = book.name
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holder.bookList_Introduce.text = book.introduce
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val backgrounds = arrayOf(R.drawable.color_lightpurple, R.drawable.color_lightblue,R.drawable.color_lightgreen, R.drawable.color_flesh)
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holder.innerLinearLayout.setBackgroundResource(backgrounds[position % backgrounds.size])
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if (position == 0) { // 假设第一名使用金牌图片
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holder.rankimg.setImageResource(R.drawable.gold)
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} else if (position == 1) { // 第二名使用其他图片，以此类推
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holder.rankimg.setImageResource(R.drawable.silver)
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}
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else if(position==2){
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holder.rankimg.setImageResource(R.drawable.copper)
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}
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val query = BmobQuery<Book_bmob>()
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query.addWhereEqualTo("name", book.name)
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query.findObjects(object : FindListener<Book_bmob>() {
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override fun done(p0: MutableList<Book_bmob>?, p1: BmobException?) {
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if (p1 == null) {
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if (p0 != null && p0.size > 0) {
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for (p in p0) {
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object : Thread() {
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override fun run() {
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try {
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val url = URL(p!!.picture.url)
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val connection: HttpURLConnection =
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url.openConnection() as HttpURLConnection
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connection.setRequestMethod("GET")
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connection.setConnectTimeout(5000)
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val `in`: InputStream = connection.getInputStream()
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val bitmap: Bitmap =
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BitmapFactory.decodeStream(`in`)
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holder.bookList_Image.setImageBitmap(bitmap)
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} catch (e: Exception) {
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e.printStackTrace()
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}
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}
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}.start()
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}
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}
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}
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}
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})
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// Glide.with(context).load(book.imageId).into(holder.bookList_Image)
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holder.outerLinearLayout.setOnClickListener{
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val intent = Intent(holder.itemView.context, Book_informationActivity::class.java)
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intent.putExtra("Book_name", book.name)
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ContextCompat.startActivity(holder.itemView.context, intent, null)
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}
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}
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override fun getItemCount() = bookList.size
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fun updateBooks(newBooks: List<Book>) {
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bookList = newBooks
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notifyDataSetChanged()
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}
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}
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