1     [Activity(Label = "ActionBarStudy", MainLauncher = true, Icon = "@drawable/icon")]
 2     public class MainActivity : Activity
 3     {
 4         Fragment fragment1;
 5         Fragment fragment2;
 6 
 7         protected override void OnCreate(Bundle bundle)
 8         {
 9             base
 
.OnCreate(bundle);
10             SetContentView(Resource.Layout.Main);
11             ActionBar.NavigationMode = ActionBarNavigationMode.Tabs;
12 
13             fragment1 = new Fragment1();
14             fragment2 = new Fragment2();
15 
16             var tab = ActionBar.NewTab();
17             tab.SetText("
 
Tab1");
18             tab.SetIcon(Resource.Drawable.Icon);
19             var tab2 = ActionBar.NewTab();
20             tab2.SetText("Tab2");
21             tab2.SetIcon(Resource.Drawable.Icon);
22 
23             tab.TabSelected += (s, e) =>
24             {
25                 if (!fragment1.IsAdded)
 
26                 {
27                     e.FragmentTransaction.Add(Resource.Id.frameLayout1, fragment1);
28                 }
29                 if (fragment2.IsAdded && !fragment2.IsHidden)
30                 {
31                     e.FragmentTransaction.Hide(fragment2);
32                 }
33                 e.FragmentTransaction.Show(fragment1);
34             };
35             
36 
37 
38             tab2.TabSelected += (s, e) =>
39             {
40                 if (!fragment2.IsAdded)
41                 {
42                     e.FragmentTransaction.Add(Resource.Id.frameLayout1, fragment2);
43                 }
44                 if (fragment1.IsAdded && !fragment1.IsHidden)
45                 {
46                     e.FragmentTransaction.Hide(fragment1);
47                 }
48                 e.FragmentTransaction.Show(fragment2);
49             };
50 
51             ActionBar.AddTab(tab);
52             ActionBar.AddTab(tab2);
53 
54             ActionBar.SelectTab(tab);
55         }
56 }