SunlightAggregationTerminal/ScanPage.xaml.cs

using CommunityToolkit.Mvvm.Messaging;
using SunlightAggregationTerminal.View;
using ZXing.Multi;
using ZXing.Net.Maui;
using ZXing.QrCode.Internal;

namespace SunlightAggregationTerminal;

public partial class ScanPage : ContentPage
{
    private int mode;
	public ScanPage(int i)
	{
		InitializeComponent();
        mode = i;
    }
    private async void OnBarcodesDetected(object sender, BarcodeDetectionEventArgs e)
    {
        var firstResult = e.Results?.FirstOrDefault();
        if (firstResult is not null)
        {
            barcodeReader.IsDetecting = false;

            // 触发回调
            if (mode == 0)
            {
                MainThread.BeginInvokeOnMainThread(() =>
                {
                    // 震动
                    try { Vibration.Default.Vibrate(TimeSpan.FromMilliseconds(100)); } catch { }
                    // 传入信息
                    WeakReferenceMessenger.Default.Send(firstResult.Value);
                    // 等待 1.5 秒（非阻塞，界面不会卡死）
                    Task.Delay(1500);
                    // 关闭页面
                    Navigation.PopAsync();
                });
            }
            if (mode == 3)
            {
               MainThread.BeginInvokeOnMainThread(() =>
                {
                    try { Vibration.Default.Vibrate(TimeSpan.FromMilliseconds(100)); } catch { }
                    WeakReferenceMessenger.Default.Send(firstResult.Value);
                    Task.Delay(1500);
                    // 关闭页面
                    Navigation.PopModalAsync();
                });
            }        
        }
    }

}