InfoPage消息接收显示

InfoPage.xaml.cs

@@ -1,3 +1,4 @@
+using CommunityToolkit.Mvvm.Messaging;
 using Microsoft.Maui.Controls;
 using SunlightAggregationTerminal.Class;
 using SunlightAggregationTerminal.Models;
@@ -6,21 +7,26 @@ using System.Collections.ObjectModel;
 namespace SunlightAggregationTerminal;
 
 public partial class InfoPage : ContentPage
-{   
+{
     public static ObservableCollection<InfoItem> InfoItems { get; set; } = new();
     public static string? _Name, _State, _MachineName, _Machine, _Information, _Model,
         _Type, _ModelA, _ModelB, _ModelC, _ModelD, _ModelE, _ModelF;
 
     public InfoPage()
-	{
-        InitializeComponent();       
-    }
-
-    public static void OnInfoPage()//打开时加载信息
     {
-        MainThread.BeginInvokeOnMainThread(() =>
+        InitializeComponent();
+
+        CardCollectionView.ItemsSource = InfoItems;
+        // 注册订阅一个不携带数据的消息（使用 object 作为泛型）
+        WeakReferenceMessenger.Default.Register<object>(this, (r, m) =>
         {
-            InfoItems.Clear();
+            // 收到信号，直接触发函数
+            HandleUITrigger();
+        });
+    }
+    private void HandleUITrigger()
+    {
+        InfoItems.Clear();
         foreach (Dictionary<string, object> List in DataModel.Info_data)
         {
             if (List.TryGetValue("Name", out var val) && val != null) _Name = val.ToString()!;
@@ -56,10 +62,30 @@ public partial class InfoPage : ContentPage
 
         }
 
+        InfoItems.Add(new InfoItem
+        {
+            Name = _Name,
+            State = _State,
+            MachineName = _MachineName,
+            Machine = _Machine,
+            Information = _Information,
+            Type = _Type,
+            Model = _Model,
+            ModelA = _ModelA,
+            ModelB = _ModelB,
+            ModelC = _ModelC,
+            ModelD = _ModelD,
+            ModelE = _ModelE,
+            ModelF = _ModelF
         });
 
     }
 
+    ~InfoPage()//关闭时注销消息
+    {
+        WeakReferenceMessenger.Default.UnregisterAll(this);
+    }
+   
     private void TapGestureRecognizer_Tapped(object sender, TappedEventArgs e)
     {
         // 将 sender 强制转换为  BindingContext 定义在 BindableObject