小编Dra*_*gos的帖子

我有几个ContentPages,我想通过单击页面中的元素从一个导航到另一个.我有我的ViewModel类:

 class JumpVM : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;
        private INavigation _navigation;

        public ICommand NewPage
        {
            get
            {
                return new Command(async () =>
                {
                    await _navigation.PushAsync(new MySettingsPage());
                });
            }
        }

        public JumpVM() { }

        public JumpVM(INavigation navitation)
        {
            _navigation = navitation;
        }
    }

这是我的一个页面(为了空间,我只放了相关的代码):

BindingContext = new JumpVM(this.Navigation);

....

 Image fbInvite = new Image
            {
                Source = ImageSource.FromResource(Constants.ASSETLOCATION + ".facebookInviteIcon.png"),
                HorizontalOptions = LayoutOptions.Center
            };
            fbInvite.GestureRecognizers.Add(new TapGestureRecognizer(sender =>
                {
                    //navigation in the method below
                    FaceboonInviteFriends();
                    fbInvite.Opacity = 0.8;
                    fbInvite.FadeTo(1);
                })); …

当我通过MVVM模式将表单中的按钮按到另一个表单时,我想发送一个值.

这是XAML文件

 <Button x:Name="myButton"
            Text="RandomButton"
            TextColor="#000000"
            BackgroundColor="{x:Static local:FrontEndConstants.ButtonBackground}"
            Grid.Row="2" Grid.Column="0"
            Grid.ColumnSpan="3"
            Command="{Binding NewPage}"
            CommandParameter="100">     
</Button>

这是我ModelView class被重定向到另一种形式的地方.

class JumpMVVM :INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;

        private INavigation _navigation;

        public ICommand NewPage
        {
            get
            {
                return new Command(async () =>
                { 
                    await _navigation.PushAsync(new Page2()); // HERE
                });
            }
        }

        public JumpMVVM() { }

        public JumpMVVM(INavigation navigation)
        {                
            _navigation = navigation;                
        }

跳跃工作.如何将"CommandParameter"发送到"Page2"？

谢谢,Dragos

我在google上搜索了如何动态编辑Resources.Values.strings.xml文件,这样我就可以添加我的Facebook Access Token,这样用户在重用应用程序时就不需要再次登录了.是否可以编辑它,或者我是否必须使用其他方法来存储令牌？