1 namespace Phoneword_Droid
 2 {
 3     [Activity(Label = "@string/callHistory")]
 4     public class CallHistoryActivity : ListActivity
 5     {
 6         protected override void OnCreate(Bundle bundle)
 7         {
 8             base.OnCreate(bundle);
 9             //从意图中获取传递过来的参数
10             var phoneNumbers = Intent.Extras.GetStringArrayList("phone_numbers") ?? new string[0];
11 
12             //将字符串数组显示到列表控件中（因为继承的是ListActivity所以整个视图就是一个列表）
13             this.ListAdapter = new ArrayAdapter<string>(this, Android.Resource.Layout.SimpleListItem1, phoneNumbers);
14 
15             //关于ArrayAdapter的第二个参数，其实就是指定列表中每个项的视图，后面我们会通过自定义的方式控制列表的项
16         }
17     }
18 }

1     [Activity(Label = "Phoneword_Droid", MainLauncher = true, Icon = "@drawable/icon")]
2     public class MainActivity : Activity
3     {
4         static readonly List<string> phoneNumbers = new List<string>();

1             Button callHistoryButton = FindViewById<Button>(Resource.Id.CallHistoryButton);
2             callHistoryButton.Click += (e, t) =>
3             {
4                 //指定意图需要打开的活动
5                 var intent = new Intent(this, typeof(CallHistoryActivity));
6                 //设置意图传递的参数
7                 intent.PutStringArrayListExtra("phone_numbers", phoneNumbers);
8                 StartActivity(intent);
9             };

 1                 //拨打按钮
 2                 callDialog.SetNeutralButton("Call", delegate
 3                 {
 4                     //将电话加入到历史记录列表中
 5                     phoneNumbers.Add(translatedNumber);
 6 
 7                     //如果callHistoryButton的定义在这段代码后面将会出错，所以我们这个时候需要将
 8                     //Button callHistoryButton = FindViewById<Button>(Resource.Id.CallHistoryButton); 代码提前
 9                     callHistoryButton.Enabled = true;
10 
11                     //使用意图拨打电话
12                     var callIntent = new Intent(Intent.ActionCall);
13 
14                     //将需要拨打的电话设置为意图的参数
15                     callIntent.SetData(Android.Net.Uri.Parse("tel:" + translatedNumber));
16                     
17                     StartActivity(callIntent);
18                 });