(Android™) Check if File Exists

Demonstrates how to check to see if a file exists.

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();

    // Connect to the SSH server.  
    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;
        }

    // Check to see if a file exists

    // The return value is one of the following values:
    // -1: Unable to check. Examine the LastErrorText to determine the reason for failure.
    // 0: File does not exist.
    // 1: The regular file exists.
    // 2: It exists, but it is a directory.
    // 3: It exists, but it is a symlink (only possible if followLinks is false)
    // 4: It exists, but it is a special filesystem entry type.
    // 5: It exists, but it is an unkown filesystem entry type.
    // 6: It exists, but it is an socket filesystem entry type.
    // 7: It exists, but it is an char device entry type.
    // 8: It exists, but it is an block device entry type.
    // 9: It exists, but it is an FIFO entry type.

    boolean followLinks = true;
    int status = sftp.FileExists("someDir/someFile.txt",followLinks);
    if (status < 0) {
        Log.i(TAG, sftp.lastErrorText());
        return;
        }

    Log.i(TAG, "status = " + String.valueOf(status));

    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."
  }
}