重定向到DisplayAlert彈出窗口中的另一頁Xamarin.Form

Question

嘿我正在使用Autofac（MVVM）的每個人我的問題是如何通過點擊彈出屏幕中的確定按鈕來重定向到DisplayAlert彈出窗口中的另一個頁面？由於顯示警報位於我的視圖和我的ViewModel中，因此導航到其他頁面的ICommand是導航器。

  PushAsync<PageViewModel>(); 

我的一些代碼剪斷的：

的ViewModels

public class HomePageViewModel : ViewModelBase 
    { 
    private readonly INavigator _navigator; 

    public HomePageViewModel(INavigator navigator) 
    { 
     _navigator = navigator; 
     CmdInvites = new Command(Cmdinvites); 
    } 

    public ICommand CmdInvites { get; private set; } 


    //Invite PhoneBook 
    private void Cmdinvites() 
    { 
     _navigator.PushAsync<PhoneContactViewModel>(); 
    } 

    } 


zxing.OnScanResult += (result) => 
Device.BeginInvokeOnMainThread(async() => { 
// Stop analysis until we navigate away so we don't keep reading barcodes 
    zxing.IsAnalyzing = false; 
    // Show an alert 
    await DisplayAlert("Scanned Barcode", result.Text, "OK"); 
    // Navigate away 
    await Navigation.PopAsync(); 
     <-------------this is where i want to redirect the {Binding CmdInvites}   
}); 

謝謝你的時間閱讀我的文章。

Answer 1

可以使用，這將是另一個這樣DisplayAlert方法構造：

Device.BeginInvokeOnMainThread(async() => { 
// Stop analysis until we navigate away so we don't keep reading barcodes 
    zxing.IsAnalyzing = false; 
    // Show an alert 
    if(await DisplayAlert("Scanned Barcode", result.Text, "Accept","Cancel")) 
    { 
    // Navigate away 
    await Navigation.PopAsync(); 
     <-------------this is where i want to redirect the {Binding CmdInvites} 
    }  
});