xamarin android 邮件,Add Email Body Text and Send Email from Xamarin.Android App

I am attempting to create and send an email (using Gmail app) from user-supplied information entered into a simple Xamarin.Android mobile app. I am new to Xamarin.Android and have not been able to find clear guidance on this issue online.

Using the code below, I am able to gather text and create an email Intent that uses the user-provided email address and a hard-coded subject line. But the code for adding body text to the email is not working (the Gmail app opens and the email address and subject line are correct, but the body of the email is blank).

[Activity(Label = @"HelloWorld-TestMobileApp", MainLauncher = true, Icon = "@drawable/icon")]

public class MainActivity : Activity

{

public int ClickCount { get; set; } = 0;

public string EmailAddress { get; set; }

public string EmailText { get; set; }

protected override void OnCreate(Bundle bundle)

{

base.OnCreate(bundle);

// Set our view from the "main" layout resource

SetContentView(Resource.Layout.Main);

// Get our buttons from the layout resource,

// and attach a events to them

Button clickIncrementerButton = FindViewById(Resource.Id.ClickIncrementer);

Button sendEmailButton = FindViewById(Resource.Id.sendEmailButton);

EditText enterEmailAddressButton = FindViewById(Resource.Id.editEmail);

EditText enterEmailTextButton = FindViewById(Resource.Id.emailText);

clickIncrementerButton.Click += delegate

{

ClickCount++;

clickIncrementerButton.Text = string.Format("{0} clicks!", ClickCount);

};

enterEmailAddressButton.TextChanged += delegate

{

EmailAddress = enterEmailAddressButton.Text;

};

enterEmailTextButton.TextChanged += delegate

{

EmailText = enterEmailTextButton.Text;

};

sendEmailButton.Click += delegate

{

List emailBody = new List

{

"Hello from Xamarin.Android!\n",

"Number of clicks = " + ClickCount + "\n",

EmailText

};

var email = new Intent(Intent.ActionSend);

email.PutExtra(Intent.ExtraEmail, new string[] {EmailAddress}); // Working 09/24/2016

email.PutExtra(Intent.ExtraSubject, "Hello World Email"); // Working 09/24/2016

email.PutStringArrayListExtra(Intent.ExtraText, emailBody); // NOT Working 09/24/2016

email.SetType("message/rfc822");

try

{

StartActivity(email);

}

catch (Android.Content.ActivityNotFoundException ex)

{

Toast.MakeText(this, "There are no email applications installed.", ToastLength.Short).Show();

}

};

}

Can anyone show me how I can pre-format and include the email body text in the email Intent, without hard-coding the entire body text string? (Other email-sending critiques and guidance for Xamarin.Android apps is also welcome!)

I want to be able to include information that the user enters in the app, so I want to be able to include variables in the body text (I do not want to hard-code the body text).

Thank you!