From 2933603ee0940395a80a91bb23e50cbe8ba9baa5 Mon Sep 17 00:00:00 2001
From: cloudroam <cloudroam>
Date: 星期三, 05 三月 2025 10:03:16 +0800
Subject: [PATCH] fix: 2
---
app/src/main/java/com/example/firstapp/ui/home/HomeFragment.kt | 129 ++++++++++++++++++++++++++++++++++--------
1 files changed, 104 insertions(+), 25 deletions(-)
diff --git a/app/src/main/java/com/example/firstapp/ui/home/HomeFragment.kt b/app/src/main/java/com/example/firstapp/ui/home/HomeFragment.kt
index bf4b7ec..be80342 100644
--- a/app/src/main/java/com/example/firstapp/ui/home/HomeFragment.kt
+++ b/app/src/main/java/com/example/firstapp/ui/home/HomeFragment.kt
@@ -1,16 +1,22 @@
package com.example.firstapp.ui.home
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.content.IntentFilter
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.TextView
+import androidx.core.content.ContextCompat
import androidx.fragment.app.Fragment
import androidx.lifecycle.ViewModelProvider
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import com.example.firstapp.R
-import com.example.firstapp.adapter.MyAdapter
+import com.example.firstapp.activity.PickupActivity
+import com.example.firstapp.adapter.ExpressAdapter
import com.example.firstapp.core.Core
import com.example.firstapp.databinding.FragmentHomeBinding
@@ -23,45 +29,118 @@
private val binding get() = _binding!!
private lateinit var homeViewModel: HomeViewModel
- private lateinit var adapter: MyAdapter
+ private lateinit var expressAdapter: ExpressAdapter
+ // private lateinit var financeAdapter: FinanceAdapter
+// private lateinit var memorialAdapter: MemorialAdapter
+ private lateinit var dataUpdateReceiver: BroadcastReceiver
-
+ //onCreateView这个方法创建后被调用，通常是初始化视图组件和观察者
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
): View {
- homeViewModel =
- ViewModelProvider(this).get(HomeViewModel::class.java)
-
_binding = FragmentHomeBinding.inflate(inflater, container, false)
- val root: View = binding.root
+ return binding.root
+ }
-// val textView: TextView = binding.textHome
-// homeViewModel.text.observe(viewLifecycleOwner) {
-// textView.text = it
-// }
+ override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+ super.onViewCreated(view, savedInstanceState)
+ //通过 ViewModelProvider 获取 HomeViewModel 的实例，以便在视图中使用。
+ homeViewModel = ViewModelProvider(this).get(HomeViewModel::class.java)
- // 初始化适配器
- adapter = MyAdapter()
+ //调用这个方法来设置 RecyclerView用于设置 RecyclerView 的布局和适配器。
+ setupRecyclerViews()
+ //调用这个方法来观察 ViewModel 中的数据变化
+ observeViewModelData()
+ }
- // 获取数据
-// val codeList = Core.code.getAllDesc()
+ override fun onCreate(savedInstanceState: Bundle?) {
+ super.onCreate(savedInstanceState)
- // 使用 binding 来访问 RecyclerView
- val recyclerView: RecyclerView = binding.recyclerView
- recyclerView.layoutManager = LinearLayoutManager(requireContext()) // 使用 requireContext() 获取上下文
- recyclerView.adapter = adapter
+ // 创建广播接收器
+ dataUpdateReceiver = object : BroadcastReceiver() {
+ override fun onReceive(context: Context, intent: Intent) {
+ if (intent.action == "com.example.firstapp.DATA_UPDATED") {
+ // 收到数据更新广播时重新加载数据
+ homeViewModel.loadExpressData()
+ }
+ }
+ }
+ }
- // 观察 LiveData，当数据发生变化时，更新 RecyclerView 的内容
- homeViewModel.codeList.observe(viewLifecycleOwner) { codeList ->
- adapter.submitList(codeList) // 更新 RecyclerView 的数据
- // 滚动到顶部
- recyclerView.scrollToPosition(0)
+ private fun setupRecyclerViews() {
+ binding.expressRecycler.apply {
+ layoutManager = LinearLayoutManager(context)
+ expressAdapter = ExpressAdapter()
+ adapter = expressAdapter
+
+ // 设置点击监听
+ expressAdapter.setOnPackageClickListener { group, pack ->
+ // 跳转到取件页面
+ val intent = Intent(requireContext(), PickupActivity::class.java).apply {
+ putExtra("station_name", group.stationName)
+ putExtra("company", pack.company)
+ }
+ startActivity(intent)
+ }
}
- return root
+// // 财务列表
+// binding.financeRecycler.apply {
+// layoutManager = LinearLayoutManager(context)
+// financeAdapter = FinanceAdapter()
+// adapter = financeAdapter
+// }
+//
+// // 纪念日列表
+// binding.memorialRecycler.apply {
+// layoutManager = LinearLayoutManager(context)
+// memorialAdapter = MemorialAdapter()
+// adapter = memorialAdapter
+// }
+ }
+
+ //这个方法用于观察 homeViewModel 中的 expressItems 数据。
+ private fun observeViewModelData() {
+ //当 expressItems 数据发生变化时，更新 RecyclerView 的数据。
+ homeViewModel.expressItems.observe(viewLifecycleOwner) { items ->
+ //将新的数据列表提交给适配器，以更新 RecyclerView 的显示内容。
+ expressAdapter.submitList(items)
+ }
+
+// homeViewModel.financeItems.observe(viewLifecycleOwner) { items ->
+// financeAdapter.submitList(items)
+// }
+//
+// homeViewModel.memorialItems.observe(viewLifecycleOwner) { items ->
+// memorialAdapter.submitList(items)
+// }
+ }
+
+ override fun onResume() {
+ super.onResume()
+ // 使用 ContextCompat 注册广播接收器，并指定 RECEIVER_NOT_EXPORTED 标志
+ ContextCompat.registerReceiver(
+ requireContext(),
+ dataUpdateReceiver,
+ IntentFilter("com.example.firstapp.DATA_UPDATED"),
+ ContextCompat.RECEIVER_NOT_EXPORTED
+ )
+ // 加载数据
+ homeViewModel.loadExpressData()
+ }
+
+ override fun onPause() {
+ super.onPause()
+ try {
+ // 取消注册广播接收器
+ requireContext().unregisterReceiver(dataUpdateReceiver)
+ } catch (e: Exception) {
+ // 处理可能的异常
+ e.printStackTrace()
+ }
}
override fun onDestroyView() {
--
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