Android™

Save All MIME Attachments to Files

Demonstrates the Chilkat Mime.PartsToFiles method, which recursively traverses the MIME tree and saves each part having a nonempty filename parameter to a directory. The first argument is the destination directory and the second is a StringTable that receives the saved filenames.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This extracts every named attachment from a message in one call, walking the whole tree so it finds attachments nested inside multipart containers. It saves only parts that declare a filename — inline body parts without one are skipped — and reports what it wrote via the StringTable, which is handy for logging or follow-up processing. The destination directory must already exist.

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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();
    success = mime.LoadMimeFile("qa_data/multipart_message.eml");
    if (success == false) {
        Log.i(TAG, mime.lastErrorText());
        return;
        }

    //  Recursively traverse the MIME tree and save each part that has a nonempty "filename" parameter
    //  to a directory.  The 1st argument is the destination directory and the 2nd is a StringTable
    //  that receives the saved filenames.
    CkStringTable savedFiles = new CkStringTable();
    success = mime.PartsToFiles("qa_output/attachments",savedFiles);
    if (success == false) {
        Log.i(TAG, mime.lastErrorText());
        return;
        }

    int n = savedFiles.get_Count();
    Log.i(TAG, "Saved " + String.valueOf(n) + " files:");
    int i;
    for (i = 0; i <= n - 1; i++) {
        String name = savedFiles.stringAt(i);
        if (savedFiles.get_LastMethodSuccess() == false) {
            Log.i(TAG, savedFiles.lastErrorText());
            return;
            }

        Log.i(TAG, name);
        }


  }

  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."
  }
}