(Android™) Controlling Charset of HTML Email

This example demonstrates how to change the charset of an HTML email by setting the Charset property.

Chilkat Android™ Downloads

Android™ Java Libraries

Android C/C++ Libraries

// Important: Don't forget to include the call to System.loadLibrary
// as shown at the bottom of this code sample.
package com.test;

import android.app.Activity;
import com.chilkatsoft.*;

import android.widget.TextView;
import android.os.Bundle;

public class SimpleActivity extends Activity {

  private static final String TAG = "Chilkat";

  // Called when the activity is first created.
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    boolean success;

    CkEmail email = new CkEmail();

    // Tell Chilkat you want the email to be utf-8.
    email.put_Charset("utf-8");

    email.put_From("somebody@gmail.com");
    email.AddTo("Joe","joe_somebody@gmail.com");
    email.put_Subject("This is a test");

    // Load a utf-8 HTML file that will be the body of this email.
    // The HTML contains this line to specify the charset:
    // 
    //     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    // 
    // The sample HTML is available here:  https://chilkatsoft.com/exampleData/sample_utf8.html
    // 
    CkStringBuilder sbHtml = new CkStringBuilder();
    sbHtml.LoadFile("qa_data/html/sample_utf8.html","utf-8");

    email.SetHtmlBody(sbHtml.getAsString());

    // If this email was sent as-is, it would look like this:
    CkMailMan mailman = new CkMailMan();
    Log.i(TAG, mailman.renderToMime(email));

    // The MIME that would be sent is this:

    // 	MIME-Version: 1.0
    // 	Date: Wed, 08 Mar 2017 09:39:06 -0600
    // 	Message-ID: <53930EB7EFA37B121FB2CC0E57E9FA4D02AD86A3@CHILKAT13>
    // 	Content-Type: text/html; charset=utf-8
    // 	Content-Transfer-Encoding: quoted-printable
    // 	X-Priority: 3 (Normal)
    // 	From: somebody@gmail.com
    // 	To: Joe <joe_somebody@gmail.com>
    // 	Subject: This is a test
    // 
    // 	<html>
    // 	<head>
    // 	<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dutf-8" />
    // 	</head>
    // 	<body>
    // 	<p>=C3=A0=C3=A8=C3=AC=C3=B2=C3=B9=C3=80=C3=88=C3=8C=C3=92=C3=99=C3=A1=C3=A9=
    // 	=C3=AD=C3=B3=C3=BA=C3=BD=C3=81=C3=89=C3=8D=C3=93=C3=9A=C3=9D=C3=A2=C3=AA=C3=
    // 	=AE=C3=B4=C3=BB=C3=82=C3=8A=C3=8E=C3=94=C3=9B=C3=A3=C3=B1=C3=B5=C3=83=C3=91=
    // 	=C3=95=C3=A4=C3=AB=C3=AF=C3=B6=C3=BC=C3=BF=C3=84=C3=8B=C3=8F=C3=96=C3=9C=C5=
    // 	=B8=C3=A5=C3=85</p>
    // 	</body>
    // 	</html>
    // 

    // -----------------------------------------
    // Let's say we want to send iso-8859-1 instead...
    // Just set the email object's Charset property, like this:
    email.put_Charset("iso-8859-1");

    // Now see what would be sent:
    Log.i(TAG, mailman.renderToMime(email));

    // 	MIME-Version: 1.0
    // 	Date: Wed, 08 Mar 2017 09:45:03 -0600
    // 	Message-ID: <DD08A5B56532AF11505ACF21A1338E0A3024D34A@CHILKAT13>
    // 	Content-Type: text/html; charset=iso-8859-1
    // 	Content-Transfer-Encoding: quoted-printable
    // 	X-Priority: 3 (Normal)
    // 	From: somebody@gmail.com
    // 	To: Joe <joe_somebody@gmail.com>
    // 	Subject: This is a test
    // 
    // 	<html>
    // 	<head><META http-equiv=3D"Content-Type" content=3D"text/html;charset=3Diso-=
    // 	8859-1">
    // 
    // 	</head>
    // 	<body>
    // 	<p>=E0=E8=EC=F2=F9=C0=C8=CC=D2=D9=E1=E9=ED=F3=FA=FD=C1=C9=CD=D3=DA=DD=E2=EA=
    // 	=EE=F4=FB=C2=CA=CE=D4=DB=E3=F1=F5=C3=D1=D5=E4=EB=EF=F6=FC=FF=C4=CB=CF=D6=DC=
    // 	=9F=E5=C5</p>
    // 	</body>
    // 	</html>

    // -----------------------------------------
    // Let's say we don't want quoted-printable, but instead want 8bit.
    // The AddHeaderField method replaces the header field if it already exists.
    // Do this to get 8bit encoding instead of quoted-printable.
    email.AddHeaderField("Content-Transfer-Encoding","8bit");
    // Now see what would be sent:
    // (Note: Because RenderToMime returns a string, it generally not possible to render MIME to a string
    // IF the MIME contains binary data and uses the 8bit encoding (for example, if a JPEG image was attached).  
    // However, the email would still be sent correctly.)
    Log.i(TAG, mailman.renderToMime(email));

    // 	MIME-Version: 1.0
    // 	Date: Wed, 08 Mar 2017 09:51:33 -0600
    // 	Message-ID: <F38B4A8D33C111057E901782305E01AC5BE31B98@CHILKAT13>
    // 	Content-Type: text/html; charset=iso-8859-1
    // 	Content-Transfer-Encoding: 8bit
    // 	X-Priority: 3 (Normal)
    // 	From: somebody@gmail.com
    // 	To: Joe <joe_somebody@gmail.com>
    // 	Subject: This is a test
    // 
    // 	<html>
    // 	<head><META http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
    // 
    // 	</head>
    // 	<body>
    // 	<p>àèìòùÀÈÌÒÙáéíóúýÁÉÍÓÚÝâêîôûÂÊÎÔÛãñõÃÑÕäëïöüÿÄËÏÖÜŸåÅ</p>
    // 	</body>
    // 	</html>
    // 

  }

  static {
      System.loadLibrary("chilkat");

      // Note: If the incorrect library name is passed to System.loadLibrary,
      // then you will see the following error message at application startup:
      //"The application <your-application-name> has stopped unexpectedly. Please try again."
  }
}