Hello, Android多屏幕版

using System;
using System.Collections.Generic;
using Android.App;
using Android.OS;
using Android.Widget;
namespace Phoneword
{
[Activity(Label = "@string/callHistory")]
public class CallHistoryActivity : ListActivity
{
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
// Create your application here
var phoneNumbers = Intent.Extras.GetStringArrayList("phone_numbers") ?? new string[];
this.ListAdapter = new ArrayAdapter<string>(this, Android.Resource.Layout.SimpleListItem1, phoneNumbers);
}
}
}

using System.Collections.Generic;

[Activity(Label = "Phoneword", MainLauncher = true, Icon = "@drawable/icon")]
public class MainActivity : Activity
{
static readonly List<string> phoneNumbers = new List<string>();
...// OnCreate, etc.
}

Button callHistoryButton = FindViewById<Button> (Resource.Id.CallHistoryButton);
callHistoryButton.Click += (sender, e) =>
{
var intent = new Intent(this, typeof(CallHistoryActivity));
intent.PutStringArrayListExtra("phone_numbers", phoneNumbers);
StartActivity(intent);
};

callDialog.SetNeutralButton("Call", delegate
{
// add dialed number to list of called numbers.
phoneNumbers.Add(translatedNumber);
// enable the Call History button
callHistoryButton.Enabled = true;
// Create intent to dial phone
var callIntent = new Intent(Intent.ActionCall);
callIntent.SetData(Android.Net.Uri.Parse("tel:" + translatedNumber));
StartActivity(callIntent);
});