77 lines
3.3 KiB
Kotlin
77 lines
3.3 KiB
Kotlin
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package com.zjgsu.jianshu
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import android.os.Bundle
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import android.text.TextUtils
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import android.widget.SearchView
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import android.widget.Toast
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import androidx.appcompat.app.AppCompatActivity
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import androidx.recyclerview.widget.GridLayoutManager
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import androidx.recyclerview.widget.StaggeredGridLayoutManager
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import cn.bmob.v3.Bmob
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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.*
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import com.zjgsu.jianshu.Adapter.BillboardAdapter
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import com.zjgsu.jianshu.Adapter.BookRankAdapter
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import com.zjgsu.jianshu.Bmob.Book_info_bmob
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import kotlinx.android.synthetic.main.activity_bookrank.*
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import kotlinx.android.synthetic.main.activity_main.*
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class HotBookActivity: AppCompatActivity() {
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private var hotbookList=ArrayList<Book_rank>()
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lateinit var adapter:BookRankAdapter
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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setContentView(R.layout.activity_bookrank)
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Bmob.initialize(this, "8f9f1d1ea520b0ce4f84a6fa83a5f754")//连接bmob
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adapter= BookRankAdapter(hotbookList)
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bookrank_recyclerView.layoutManager=StaggeredGridLayoutManager(1, StaggeredGridLayoutManager.VERTICAL)
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bookrank_recyclerView.adapter=adapter
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bookrank_swipeRefresh.setOnRefreshListener {
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loadBookRanks() //下拉刷新
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}
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loadBookRanks()
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bookrank_title.text="热门图书榜单"
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}
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private fun loadBookRanks(){
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val queryHotBooks = BmobQuery<Book_info_bmob>()
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queryHotBooks.order("-countOfReaders") // 根据 countOfReaders 降序排序
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queryHotBooks.setLimit(10) // 限制查询结果的数量为3
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queryHotBooks.findObjects(object : FindListener<Book_info_bmob>() {
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override fun done(books: List<Book_info_bmob>?, e: BmobException?) {
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bookrank_swipeRefresh.isRefreshing = false
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if (e == null) {
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// 检查 books 是否非空
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if (books != null && books.isNotEmpty()) {
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hotbookList.clear() // 清空当前列表
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// 遍历 books 并转换为 Book_rank 类型后添加到列表
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books.forEach { b ->
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val bookRank = Book_rank(
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name = b.name,
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picUrl = b.picture.url,
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score="0.0",
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courtOfReaders = b.countOfReaders,
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author=b.author_name,
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intro=b.introduce
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)
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hotbookList.add(bookRank)
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adapter.notifyDataSetChanged() // 确保在这里更新适配器
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}
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}
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} else {
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// 处理错误情况
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Toast.makeText(
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this@HotBookActivity,
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"Failed to retrieve books: ${e.message}",
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Toast.LENGTH_SHORT
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).show()
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}
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}
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})
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}
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private fun returnTOCity(){
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bookrank_return.setOnClickListener{
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NavigationHelper.navigateTo(this, MainActivity::class.java)
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}
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}
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}
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