在.NET MAUI中如何对bool类型使用PropertyChanged检测变化并调用方法？

你误解了PropertyChanged的能力——它完全支持bool类型，当前问题出在静态属性无法触发实例的PropertyChanged事件，且没有在属性变更时手动触发通知。下面给出两种可行方案：

方案一：手动实现INotifyPropertyChanged（实例属性版） #

把静态属性改为实例属性，在setter中判断值变化、保存到Preferences、触发通知并调用IconUpdater：

public class Status : INotifyPropertyChanged
{
    private bool _isWorking = Preferences.Get("IsWorking", true);
    private bool _isPaused = Preferences.Get("IsPaused", false);

    public bool IsWorking
    {
        get => _isWorking;
        set
        {
            if (_isWorking != value)
            {
                _isWorking = value;
                Preferences.Set("IsWorking", value);
                OnPropertyChanged(nameof(IsWorking));
                IconUpdater();
            }
        }
    }

    public bool IsPaused
    {
        get => _isPaused;
        set
        {
            if (_isPaused != value)
            {
                _isPaused = value;
                Preferences.Set("IsPaused", value);
                OnPropertyChanged(nameof(IsPaused));
                IconUpdater();
            }
        }
    }

    public void IconUpdater()
    {
        // 你的逻辑代码
    }

    public event PropertyChangedEventHandler PropertyChanged;

    protected virtual void OnPropertyChanged(string propertyName)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }
}

如果必须保留静态属性，可以改用静态PropertyChanged事件：

public class Status
{
    private static bool _isWorking = Preferences.Get("IsWorking", true);
    private static bool _isPaused = Preferences.Get("IsPaused", false);

    public static bool IsWorking
    {
        get => _isWorking;
        set
        {
            if (_isWorking != value)
            {
                _isWorking = value;
                Preferences.Set("IsWorking", value);
                OnStaticPropertyChanged(nameof(IsWorking));
                IconUpdater();
            }
        }
    }

    public static bool IsPaused
    {
        get => _isPaused;
        set
        {
            if (_isPaused != value)
            {
                _isPaused = value;
                Preferences.Set("IsPaused", value);
                OnStaticPropertyChanged(nameof(IsPaused));
                IconUpdater();
            }
        }
    }

    public static void IconUpdater()
    {
        // 你的逻辑代码
    }

    public static event PropertyChangedEventHandler StaticPropertyChanged;

    protected static void OnStaticPropertyChanged(string propertyName)
    {
        StaticPropertyChanged?.Invoke(null, new PropertyChangedEventArgs(propertyName));
    }
}

方案二：用CommunityToolkit.Mvvm简化实现 #

先安装CommunityToolkit.Mvvm NuGet包，然后借助ObservableObject基类和特性自动处理通知：

using CommunityToolkit.Mvvm.ComponentModel;

public partial class Status : ObservableObject
{
    [ObservableProperty]
    private bool _isWorking = Preferences.Get("IsWorking", true);

    [ObservableProperty]
    private bool _isPaused = Preferences.Get("IsPaused", false);

    // 属性变化时自动触发的回调方法
    partial void OnIsWorkingChanged(bool value)
    {
        Preferences.Set("IsWorking", value);
        IconUpdater();
    }

    partial void OnIsPausedChanged(bool value)
    {
        Preferences.Set("IsPaused", value);
        IconUpdater();
    }

    public void IconUpdater()
    {
        // 你的逻辑代码
    }
}

• [ObservableProperty]会自动生成对应的公共属性（如_isWorking生成IsWorking），并自动触发PropertyChanged通知
• 命名为On[PropertyName]Changed的partial方法会在属性值变化时自动执行，无需手动写setter逻辑

内容的提问来源于stack exchange，提问作者Mielesgames