From b653b90d4598ee2a65bceffa793bb75353b6d186 Mon Sep 17 00:00:00 2001
From: cloudroam <cloudroam>
Date: 星期三, 26 二月 2025 17:21:53 +0800
Subject: [PATCH] add: 快递列表展示
---
app/src/main/java/com/example/firstapp/ui/home/HomeFragment.kt | 82 +++++++++++++++++++++++++++-------------
1 files changed, 55 insertions(+), 27 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..5cdc5e0 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
@@ -10,7 +10,7 @@
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.adapter.ExpressAdapter
import com.example.firstapp.core.Core
import com.example.firstapp.databinding.FragmentHomeBinding
@@ -23,45 +23,73 @@
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
-
+ //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()
-
- // 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
-
- // 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() {
+ // 快递列表
+ //layoutManager = LinearLayoutManager(context)：设置 RecyclerView 的布局管理器为线性布局管理器，表示列表是垂直排列的。
+ //创建一个 ExpressAdapter 的实例，用于提供 RecyclerView 的数据。
+ //将适配器设置给 RecyclerView，以便显示数据。
+ binding.expressRecycler.apply {
+ layoutManager = LinearLayoutManager(context)
+ expressAdapter = ExpressAdapter()
+ adapter = expressAdapter
}
- 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 onDestroyView() {
--
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