(Android™) SFTP Resume Download

Demonstrates how to resume an SFTP download from a previous partial download.

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

    CkSFtp sftp = new CkSFtp();

    // Set some timeouts, in milliseconds:
    sftp.put_ConnectTimeoutMs(5000);
    sftp.put_IdleTimeoutMs(10000);

    // Connect to the SSH server.  
    // The standard SSH port = 22
    // The hostname may be a hostname or IP address.
    String hostname = "sftp.example.com";
    int port = 22;
    boolean success = sftp.Connect(hostname,port);
    if (success != true) {
        Log.i(TAG, sftp.lastErrorText());
        return;
        }

    // Authenticate with the SSH server.  Chilkat SFTP supports
    // both password-based authenication as well as public-key
    // authentication.  This example uses password authenication.
    success = sftp.AuthenticatePw("myLogin","myPassword");
    if (success != true) {
        Log.i(TAG, sftp.lastErrorText());
        return;
        }

    // After authenticating, the SFTP subsystem must be initialized:
    success = sftp.InitializeSftp();
    if (success != true) {
        Log.i(TAG, sftp.lastErrorText());
        return;
        }

    // Download the file:
    String remoteFilePath;
    String localFilePath;
    localFilePath = "c:/temp/hamlet.xml";
    remoteFilePath = "subdir1/subdir2/hamlet.xml";
    // The ResumeDownloadFileByName method will check
    // the local file and begin downloading the remote file
    // at the appropriate point.  For example, if the local
    // file is already 215624 bytes long, it will begin downloading
    // the remote file at the 215625'th byte -- appending to
    // the local file.
    success = sftp.ResumeDownloadFileByName(remoteFilePath,localFilePath);
    if (success != true) {
        Log.i(TAG, sftp.lastErrorText());
        return;
        }

    Log.i(TAG, "Success.");

  }

  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."
  }
}