Xamarin.android Multi-Interface

First, you must complete the tutorial http://www.cnblogs.com/yaozhenfa/p/xamarin_android_quickstart.html before you begin this tutorial, otherwise you will not be able to continue.

Ii. interface 1. Open the Resources/layout/main.axml file and continue to add a button below the call button and set its ID to @+id/callhistorybutton and set text to @string/ Callhistory (This is actually an identifier for a string resource, which we will add later):

III. Resources 1. Open Resources/values/strings.xml File

2. and add a string resource with name Callhistory:

3. Back to Main.axml you can see that the last button shows a string that has been changed:

4. The previous Call button was disabled by code, and this time we will callhistory the button through the property that changes:

You can see that the button is disabled:

Iv. code 1. Right-click the project and create a new activity named Callhistoryactivity:

2. Open the newly created activity, modify the title name of the activity, inherit the class, and display an array of strings passed in:

1 namespacephoneword_droid2 {3[Activity (Label ="@string/callhistory")]4      Public classcallhistoryactivity:listactivity5     {6         protected Override voidOnCreate (Bundle bundle)7         {8             Base. OnCreate (bundle);9             //get the arguments passed from the intent .Ten             varPhonenumbers = Intent.Extras.GetStringArrayList ("phone_numbers") ??New string[0]; One  A             //displays an array of strings to the list control (because Listactivity is inherited, so the entire view is a list) -              This. ListAdapter =Newarrayadapter<string> ( This, Android.Resource.Layout.SimpleListItem1, phonenumbers); -  the             //the second argument about Arrayadapter is actually a view of each item in the specified list, followed by a customized way to control the list's items -         } -     } -}

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3. Back to MainActivity.cs, since the history is to be displayed, then nature must be able to save so we need to define a variable:

1[Activity (Label ="phoneword_droid", Mainlauncher =true, Icon ="@drawable/icon")]2      Public classmainactivity:activity3     {4         Static ReadOnlylist<string> phonenumbers =Newlist<string> ();

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4. The listener event is then also bound for Callhistorybutton to open another activity (append continues after OnCreate):

1Button Callhistorybutton = findviewbyid<button>(Resource.Id.CallHistoryButton);2Callhistorybutton.click + = (E, t) = =3             {4                 //Specify the activity that the intent needs to open5                 varIntent =NewIntent ( This,typeof(callhistoryactivity));6                 //set parameters for intent passing7Intent. Putstringarraylistextra ("phone_numbers", phonenumbers);8 startactivity (intent);9};

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5. We lack a way to add a history, and here we should put it in the call method of the dialog, so that only the phone that is dialed will enter the history:

1                 //Dial Button2Calldialog.setneutralbutton ("Pager",Delegate3                 {4                     //add a phone to the history list5 Phonenumbers.add (translatednumber);6 7                     //if the definition of Callhistorybutton is going to go wrong after this code, we need to8                     //Button Callhistorybutton = findviewbyid<button> (Resource.Id.CallHistoryButton); code in advance9callhistorybutton.enabled =true;Ten  One                     //use intent to make a phone call A                     varCallintent =NewIntent (intent.actioncall); -  -                     //set the number of calls you want to make to an intent parameter theCallintent.setdata (Android.Net.Uri.Parse ("Tel:"+translatednumber)); -                      - startactivity (callintent); -});

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Five, the operation