Android™
Android™
Get a Remote File's Size as a String
See more SFTP Examples
Demonstrates the Chilkat SFtp.GetFileSizeStr method, which returns a remote file's size in bytes as a decimal string. The arguments are the remote path (or handle), whether symbolic links are followed, and whether the first argument is a handle.
Background: Returning the size as a string sidesteps integer-width limits entirely, so it is the safe choice for files of any size — multi-gigabyte archives, disk images, database dumps. It is also convenient in programming languages that lack a native 64-bit integer type. When you need to do arithmetic on the value, parse the string; when you only need to display or log it, the string is ready to use.
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 SFtp.GetFileSizeStr method, which returns a remote file's size in bytes as a
// decimal string. The 1st argument is the remote path (or handle), the 2nd selects whether
// symbolic links are followed, and the 3rd indicates whether the 1st argument is a handle.
CkSFtp sftp = new CkSFtp();
// Connect, authenticate, and initialize the SFTP subsystem.
int port = 22;
success = sftp.Connect("sftp.example.com",port);
if (success == false) {
Log.i(TAG, sftp.lastErrorText());
return;
}
// 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.
String password = "mySshPassword";
success = sftp.AuthenticatePw("mySshLogin",password);
if (success == false) {
Log.i(TAG, sftp.lastErrorText());
return;
}
success = sftp.InitializeSftp();
if (success == false) {
Log.i(TAG, sftp.lastErrorText());
return;
}
// The 2nd argument (bFollowLinks) selects whether a symbolic link is followed to its target.
// The 3rd argument (bIsHandle) is false here because the 1st argument is a path, not an
// open handle.
boolean bFollowLinks = true;
boolean bIsHandle = false;
// A string return avoids the 32-bit overflow that GetFileSize32 would have for very large files.
String fileSize = sftp.getFileSizeStr("subdir/hugefile.dat",bFollowLinks,bIsHandle);
if (sftp.get_LastMethodSuccess() == false) {
Log.i(TAG, sftp.lastErrorText());
return;
}
Log.i(TAG, "File size: " + fileSize + " bytes");
sftp.Disconnect();
}
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."
}
}