Android实现：
DailySummary：
entity：
package com.example.learningmanagement.entitydata class DailySummary(val id: Int,val userId: Int,val url: String = ""
)
adapter:
package com.example.learningmanagement.adapterimport android.content.Intent
import android.net.Uri
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.TextView
import androidx.recyclerview.widget.DiffUtil
import androidx.recyclerview.widget.ListAdapter
import androidx.recyclerview.widget.RecyclerView
import com.example.learningmanagement.R
import com.example.learningmanagement.entity.DailySummaryclass DailySummaryAdapter : ListAdapter<DailySummary, DailySummaryAdapter.ViewHolder>(DiffCallback()) {override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {val view = LayoutInflater.from(parent.context).inflate(R.layout.item_daily_summary, parent, false)return ViewHolder(view)}override fun onBindViewHolder(holder: ViewHolder, position: Int) {val dailySummary = getItem(position)holder.bind(dailySummary)}class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {private val tvUrl: TextView = itemView.findViewById(R.id.tvUrl)fun bind(dailySummary: DailySummary) {tvUrl.text = dailySummary.url// 设置点击事件，打开URLitemView.setOnClickListener {val intent = Intent(Intent.ACTION_VIEW, Uri.parse(dailySummary.url))itemView.context.startActivity(intent)}}}class DiffCallback : DiffUtil.ItemCallback<DailySummary>() {override fun areItemsTheSame(oldItem: DailySummary, newItem: DailySummary): Boolean {return oldItem.id == newItem.id}override fun areContentsTheSame(oldItem: DailySummary, newItem: DailySummary): Boolean {return oldItem == newItem}}
}
service:
package com.example.learningmanagement.serviceimport com.example.learningmanagement.entity.ApiResponse
import com.example.learningmanagement.entity.DailySummary
import retrofit2.http.Body
import retrofit2.http.GET
import retrofit2.http.POST
import retrofit2.http.Pathinterface DailySummaryService {@GET("daily/selectAll/{userId}")suspend fun getDailySummaries(@Path("userId") userId: String): ApiResponse<List<DailySummary>>@POST("daily/add")suspend fun addDailySummary(@Body dailySummary: DailySummary): ApiResponse<DailySummary>
}
fragment:
package com.example.learningmanagement.ui.fragmentimport android.content.Context
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.EditText
import android.widget.Toast
import androidx.appcompat.app.AlertDialog
import androidx.fragment.app.Fragment
import androidx.lifecycle.lifecycleScope
import androidx.recyclerview.widget.LinearLayoutManager
import com.example.learningmanagement.R
import com.example.learningmanagement.adapter.DailySummaryAdapter
import com.example.learningmanagement.databinding.FragmentDailySummaryBinding
import com.example.learningmanagement.entity.DailySummary
import com.example.learningmanagement.network.ServiceCreater
import com.example.learningmanagement.service.DailySummaryService
import com.example.learningmanagement.ui.MainActivity
import com.example.learningmanagement.utils.PrefsHelper
import kotlinx.coroutines.CancellationException
import kotlinx.coroutines.isActive
import kotlinx.coroutines.launchclass DailySummaryFragment : Fragment() {private var _binding: FragmentDailySummaryBinding? = nullprivate val binding get() = _binding!!private val dailySummaryService = ServiceCreater.create<DailySummaryService>()private val dailySummaryAdapter = DailySummaryAdapter()private lateinit var prefs: PrefsHelperoverride fun onAttach(context: Context) {super.onAttach(context)prefs = PrefsHelper(context)}override fun onCreateView(inflater: LayoutInflater,container: ViewGroup?,savedInstanceState: Bundle?): View {_binding = FragmentDailySummaryBinding.inflate(inflater, container, false)return binding.root}override fun onViewCreated(view: View, savedInstanceState: Bundle?) {super.onViewCreated(view, savedInstanceState)setupRecyclerView()setupFab()loadDailySummaries()// 更新标题(activity as? MainActivity)?.updateWeekTitle("日总结")}private fun setupRecyclerView() {binding.rvDailySummaries.apply {layoutManager = LinearLayoutManager(context)adapter = dailySummaryAdapter}}private fun setupFab() {binding.fabAddDailySummary.setOnClickListener {showAddDailySummaryDialog()}}private fun showAddDailySummaryDialog() {val dialogView = layoutInflater.inflate(R.layout.dialog_add_daily_summary, null)val etUrl = dialogView.findViewById<EditText>(R.id.etUrl)AlertDialog.Builder(requireContext()).setTitle("添加日总结").setView(dialogView).setPositiveButton("保存") { _, _ ->val url = etUrl.text.toString().trim()if (url.isEmpty()) {showToast("URL不能为空")return@setPositiveButton}// 保存日总结saveDailySummary(url)}.setNegativeButton("取消", null).show()}private fun saveDailySummary(url: String) {lifecycleScope.launch {try {val userId = prefs.getUserId()userId?.let { id ->val dailySummary = DailySummary(id = 0, // 后端会自动生成IDuserId = id.toInt(),url = url)val response = dailySummaryService.addDailySummary(dailySummary)if (response.code == "200") {showToast("添加成功")loadDailySummaries() // 刷新列表} else {showToast("添加失败: ${response.msg}")}} ?: run {showToast("用户未登录")}} catch (e: Exception) {showToast("网络错误: ${e.message}")}}}private fun loadDailySummaries() {if (!isAdded) returnlifecycleScope.launch {try {val userId = prefs.getUserId()userId?.let { id ->try {if (!isActive) return@launchval response = dailySummaryService.getDailySummaries(id)if (!isActive || !isAdded || _binding == null) return@launchif (response.code == "200") {response.data?.let { summaries ->if (summaries.isNotEmpty()) {// 有数据时显示列表dailySummaryAdapter.submitList(summaries)binding.rvDailySummaries.visibility = View.VISIBLEbinding.tvEmptyData.visibility = View.GONE} else {// 数据为空时显示提示dailySummaryAdapter.submitList(emptyList())showEmptyView()}} ?: run {// 响应数据为nulldailySummaryAdapter.submitList(emptyList())showEmptyView()}} else {// 请求成功但状态码不是200showToast("获取数据失败: ${response.msg}")showEmptyView()}} catch (e: CancellationException) {// 协程被取消，正常情况，不需要处理} catch (e: Exception) {if (!isActive || !isAdded || _binding == null) return@launchval errorMessage = "网络请求错误: ${e.javaClass.simpleName} - ${e.message}"showToast(errorMessage)showEmptyView()}} ?: run {if (!isActive || !isAdded || _binding == null) return@launchshowToast("用户未登录")showEmptyView()}} catch (e: CancellationException) {// 协程被取消，正常情况，不需要处理} catch (e: Exception) {if (!isActive || !isAdded || _binding == null) return@launchval errorMessage = "加载失败: ${e.javaClass.simpleName} - ${e.message}"showToast(errorMessage)showEmptyView()}}}private fun showEmptyView() {if (!isAdded || _binding == null) returnbinding.tvEmptyData.visibility = View.VISIBLEbinding.rvDailySummaries.visibility = View.GONE}private fun showToast(message: String) {if (isAdded && activity != null) {activity?.let { Toast.makeText(it, message, Toast.LENGTH_SHORT).show()}}}override fun onDestroyView() {super.onDestroyView()_binding = null}fun refreshData() {if (isAdded && _binding != null) {loadDailySummaries()}}
}
xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="vertical"android:padding="16dp"><com.google.android.material.textfield.TextInputLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginBottom="8dp"><EditTextandroid:id="@+id/etUrl"android:layout_width="match_parent"android:layout_height="wrap_content"android:hint="URL地址"android:inputType="textUri" /></com.google.android.material.textfield.TextInputLayout></LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"android:layout_width="match_parent"android:layout_height="match_parent"><androidx.recyclerview.widget.RecyclerViewandroid:id="@+id/rvDailySummaries"android:layout_width="match_parent"android:layout_height="match_parent"app:layout_constraintBottom_toBottomOf="parent"app:layout_constraintEnd_toEndOf="parent"app:layout_constraintStart_toStartOf="parent"app:layout_constraintTop_toTopOf="parent" /><TextViewandroid:id="@+id/tvEmptyData"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="暂无数据"android:textSize="18sp"android:visibility="gone"app:layout_constraintBottom_toBottomOf="parent"app:layout_constraintEnd_toEndOf="parent"app:layout_constraintStart_toStartOf="parent"app:layout_constraintTop_toTopOf="parent" /><com.google.android.material.floatingactionbutton.FloatingActionButtonandroid:id="@+id/fabAddDailySummary"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_margin="16dp"android:contentDescription="添加日总结"android:src="@android:drawable/ic_input_add"app:layout_constraintBottom_toBottomOf="parent"app:layout_constraintEnd_toEndOf="parent" /></androidx.constraintlayout.widget.ConstraintLayout>
<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_margin="8dp"app:cardCornerRadius="8dp"app:cardElevation="4dp"><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="vertical"android:padding="16dp"><TextViewandroid:id="@+id/tvUrl"android:layout_width="match_parent"android:layout_height="wrap_content"android:autoLink="web"android:textColor="@color/purple_500"android:textSize="16sp" /></LinearLayout>
</androidx.cardview.widget.CardView>
