Android™
Android™
Get an FTP Listing Entry's Size (32-bit)
See more FTP Examples
Demonstrates the Chilkat Ftp2.GetSize method, which returns the size in bytes of a cached directory-listing entry as a 32-bit integer. The only argument is a zero-based index. It returns -1 when the index is invalid or the size is unavailable.
Background: The size comes from the cached listing, so reading it for every entry costs no extra round trips. A 32-bit result cannot represent files past about 2 GB, so use
GetSize64 (or GetSizeStr) when large files are possible. Directories often report no meaningful size and come back as -1, which is why the -1 case is worth handling rather than printing blindly.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 Ftp2.GetSize method, which returns the size in bytes of a cached
// directory-listing entry as a 32-bit integer. The only argument is a zero-based index.
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;
}
success = ftp.ChangeRemoteDir("public_html");
if (success == false) {
Log.i(TAG, ftp.lastErrorText());
return;
}
// GetDirCount retrieves the directory listing on the first call and returns the number of
// entries. A negative return indicates failure.
int n = ftp.GetDirCount();
if (n < 0) {
Log.i(TAG, ftp.lastErrorText());
return;
}
int i;
for (i = 0; i <= n - 1; i++) {
String name = ftp.getFilename(i);
// GetSize returns -1 when the index is invalid or the size is unavailable (for example for a
// directory). Use GetSize64 for files that may exceed 2 GB.
int fileSize = ftp.GetSize(i);
Log.i(TAG, name + " " + String.valueOf(fileSize) + " bytes");
}
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."
}
}