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Android™

MIME Multipart Boundary and Preamble Properties

See more MIME Examples

Demonstrates the Boundary property, which gets or sets the raw boundary token of a multipart entity (without surrounding quotation marks), and UseMmDescription, which controls whether the conventional preamble text is emitted when serializing a multipart entity.

Background. A multipart boundary separates the constituent parts. Chilkat quotes the token automatically in the header when required. The preamble is ignored by MIME-aware readers and is off by default.

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Android™
// 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);

    boolean success = false;

    CkMime mime = new CkMime();

    //  Create a multipart/mixed entity.
    success = mime.NewMultipartMixed();
    if (success == false) {
        Log.i(TAG, mime.lastErrorText());
        return;
        }

    //  Boundary is the raw boundary token, without surrounding quotation marks.  Chilkat quotes it
    //  automatically in the serialized header when required.
    mime.put_Boundary("example-boundary");

    //  UseMmDescription controls whether the conventional preamble text
    //  "This is a multi-part message in MIME format." is emitted.  The default is false.
    mime.put_UseMmDescription(true);

    //  Add a simple part so the multipart has content.
    CkMime part = new CkMime();
    success = part.SetBodyFromPlainText("First part.");
    if (success == false) {
        Log.i(TAG, part.lastErrorText());
        return;
        }

    success = mime.AppendPart(part);
    if (success == false) {
        Log.i(TAG, mime.lastErrorText());
        return;
        }

    Log.i(TAG, "Boundary = " + mime.boundary());

    String mimeStr = mime.getMime();
    if (mime.get_LastMethodSuccess() == false) {
        Log.i(TAG, mime.lastErrorText());
        return;
        }

    Log.i(TAG, mimeStr);

  }

  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."
  }
}