Android™
Android™
Fetch a Set of POP3 Messages by UIDL
See more POP3 Examples
Demonstrates the Chilkat MailMan.FetchUidlSet method, which retrieves the messages whose UIDLs are listed in a StringTable and appends them to an EmailBundle. The arguments are the UIDL StringTable, headersOnly, numBodyLines, and the EmailBundle. This example fetches two specific messages by UIDL.
Background: This is the efficient way to download a selected subset of a mailbox in one call — exactly the pattern for an incremental client: list the mailbox UIDLs, compare against the ones you've already stored, and fetch only the new UIDLs as a set. It avoids re-downloading messages you already have while still pulling everything new in a single operation.
Chilkat Android™ Downloads
// 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;
// Demonstrates the MailMan.FetchUidlSet method, which retrieves the messages whose UIDLs are
// listed in a StringTable and appends them to an EmailBundle. The arguments are the UIDL
// StringTable, headersOnly, numBodyLines, and the EmailBundle. The messages remain on the
// server.
CkMailMan mailman = new CkMailMan();
// Configure the POP3 server connection.
mailman.put_MailHost("pop.example.com");
mailman.put_MailPort(995);
mailman.put_PopSsl(true);
mailman.put_PopUsername("user@example.com");
mailman.put_PopPassword("myPassword");
// Build the set of UIDLs to fetch.
CkStringTable uidls = new CkStringTable();
uidls.Append("0000000123abcdef");
uidls.Append("0000000124abcdef");
// Fetch the listed messages (full bodies) into a bundle.
// headersOnly=false (fetch the entire message).
// Note: numBodyLines only applies when headersOnly is true (it sets how many lines of the
// body to include along with the headers). When headersOnly is false, the entire message
// is fetched and numBodyLines is ignored.
CkEmailBundle bundle = new CkEmailBundle();
success = mailman.FetchUidlSet(uidls,false,0,bundle);
if (success == false) {
Log.i(TAG, mailman.lastErrorText());
return;
}
int n = bundle.get_MessageCount();
Log.i(TAG, "Fetched " + String.valueOf(n) + " messages.");
CkEmail email = new CkEmail();
int i;
for (i = 0; i <= n - 1; i++) {
success = bundle.EmailAt(i,email);
Log.i(TAG, email.subject());
}
// Note: Explicitly connecting/authenticating is optional. Chilkat MailMan automatically
// connects and authenticates -- using the property settings above -- whenever a server
// operation requires it. Calling the explicit connect/authenticate methods can still be
// helpful to determine whether a failure occurs while connecting or while authenticating.
}
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."
}
}