Resume an Interrupted FTP Transfer

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Demonstrates the RestartNext and PartialTransfer properties, which request that the next transfer resume from existing content and report whether a download was incomplete.

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

// 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;

    CkFtp2 ftp = new CkFtp2();

    ftp.put_Hostname("ftp.example.com");
    ftp.put_Username("myFtpLogin");

    //  Normally you would not hard-code the password in source.  You should instead obtain it
    //  from an interactive prompt, environment variable, or a secrets vault.
    ftp.put_Password("myPassword");

    success = ftp.Connect();
    if (success == false) {
        Log.i(TAG, ftp.lastErrorText());
        return;
        }

    //  RestartNext requests that the NEXT transfer resume from existing content rather than starting
    //  over.  It is consumed by that transfer and then automatically reset.
    ftp.put_RestartNext(true);

    //  Resume a partially-downloaded file.  Because RestartNext is set, the download continues from
    //  the current local file size.
    success = ftp.GetFile("public_html/bigfile.zip","qa_output/bigfile.zip");
    if (success == false) {
        Log.i(TAG, ftp.lastErrorText());
        return;
        }

    //  PartialTransfer indicates whether the most recent download received some, but not all, of the
    //  remote file -- distinguishing a mid-transfer failure from other outcomes.
    if (ftp.get_PartialTransfer()) {
        Log.i(TAG, "Only part of the file was received; another resume may be needed.");
        }
    else {
        Log.i(TAG, "The file was fully received.");
        }

    success = ftp.Disconnect();
    if (success == false) {
        Log.i(TAG, ftp.lastErrorText());
        return;
        }


  }

  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."
  }
}