CS0117 C＃’Resource.Id’不包含“PhoneNumberText”的定义

我使用Visual Studio 2015和Xamarin。 我正在命名我的项目“Phoneword”我在Xamarin的网站上看到了这个代码，例如tutorial / example。

TranslateButton和CallButton成员的错误相同。

MainActivity.cs

using System; using Android.App; using Android.Content; using Android.Runtime; using Android.Views; using Android.Widget; using Android.OS; namespace Phoneword { [Activity(Label = "Phoneword", MainLauncher = true)] public class MainActivity : Activity { protected override void OnCreate(Bundle bundle) { base.OnCreate(bundle); // Set our view from the "main" layout resource SetContentView(Resource.Layout.Main); // Our code will go here // Get our UI controls from the loaded layout: EditText phoneNumberText = (EditText)FindViewById(Resource.Id.PhoneNumberText); Button translateButton = FindViewById(Resource.Id.TranslateButton); Button callButton = FindViewById(Resource.Id.CallButton); // Disable the "Call" button callButton.Enabled = false; // Add code to translate number string translatedNumber = string.Empty; translateButton.Click += (object sender, EventArgs e) => { // Translate user's alphanumeric phone number to numeric translatedNumber = Core.PhonewordTranslator.ToNumber(phoneNumberText.Text); if (String.IsNullOrWhiteSpace(translatedNumber)) { callButton.Text = "Call"; callButton.Enabled = false; } else { callButton.Text = "Call " + translatedNumber; callButton.Enabled = true; } }; callButton.Click += (object sender, EventArgs e) => { // On "Call" button click, try to dial phone number. var callDialog = new AlertDialog.Builder(this); callDialog.SetMessage("Call " + translatedNumber + "?"); callDialog.SetNeutralButton("Call", delegate { // Create intent to dial phone var callIntent = new Intent(Intent.ActionCall); callIntent.SetData(Android.Net.Uri.Parse("tel:" + translatedNumber)); StartActivity(callIntent); }); callDialog.SetNegativeButton("Cancel", delegate { }); // Show the alert dialog to the user and wait for response. callDialog.Show(); }; } } } 

资源/布局/ Main.axml

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