Xamarin.Forms安卓检查用户是否点击了拒绝，不再询问

using Xamarin.Essentials;

...

public async Task<bool> CheckPermissionAsync(Permission permission)
{
    var status = await Permissions.CheckStatusAsync(permission);

    if (status == PermissionStatus.Granted)
    {
        // 权限已授予
        return true;
    }
    else if (status == PermissionStatus.Denied)
    {
        // 用户点击了拒绝，但未选择不再询问
        return false;
    }
    else if (status == PermissionStatus.Disabled)
    {
        // 权限已禁用
        return false;
    }
    else if (status == PermissionStatus.Unknown)
    {
        // 权限状态未知
        var result = await Permissions.RequestAsync(permission);

        if (result == PermissionStatus.Granted)
        {
            // 用户授予了权限
            return true;
        }
        else
        {
            // 用户拒绝了权限请求
            return false;
        }
    }

    return false;
}