i am in need of help with finding a good background ftp client code that can send a file or folder to a ftp server, i have researched for some time and found the following code below but i am not sure how to get it to run in the background.
Basically in my application i have a button and i want to setup the button to send a file to my ftp server which will be hard coded into the code and run in the background. I know i need to use and Async task method but i am not very familiar with async task method or how to implement it to a button listener. so any help or advise will be greatly appreciated. Below is the source code i am working with and having problem implementing.

Method to connect to FTP server:

    public boolean ftpConnect(String host, String username,
                              String password, int port)
    {
        try {
            mFTPClient = new FTPClient();
            // connecting to the host
            mFTPClient.connect(host, port);

            // now check the reply code, if positive mean connection success
            if (FTPReply.isPositiveCompletion(mFTPClient.getReplyCode())) {
                // login using username & password
                boolean status = mFTPClient.login(username, password);

                /* Set File Transfer Mode
                 *
                 * To avoid corruption issue you must specified a correct
                 * transfer mode, such as ASCII_FILE_TYPE, BINARY_FILE_TYPE,
                 * EBCDIC_FILE_TYPE .etc. Here, I use BINARY_FILE_TYPE
                 * for transferring text, image, and compressed files.
                 */
                mFTPClient.setFileType(FTP.BINARY_FILE_TYPE);
                mFTPClient.enterLocalPassiveMode();

                return status;
            }
        } catch(Exception e) {
            Log.d(TAG, "Error: could not connect to host " + host );
        }

        return false;
    }

Method to change working directory:

public boolean ftpChangeDirectory(String directory_path)
{
    try {
        return mFTPClient.changeWorkingDirectory(directory_path);
    } catch(Exception e) {
        Log.d(TAG, "Error: could not change directory to " + directory_path);
    }

    return false;

Method to upload a file to FTP server:

/**
 * mFTPClient: FTP client connection object (see FTP connection example)
 * srcFilePath: source file path in sdcard
 * desFileName: file name to be stored in FTP server
 * desDirectory: directory path where the file should be upload to
 */
public boolean ftpUpload(String srcFilePath, String desFileName,
                         String desDirectory)
{
    boolean status = false;
    try {
        FileInputStream srcFileStream = new FileInputStream(srcFilePath);

        // change working directory to the destination directory
        if (ftpChangeDirectory(desDirectory)) {
            status = mFTPClient.storeFile(desFileName, srcFileStream);
        }

        srcFileStream.close();
        return status;
    } catch (Exception e) {
        Log.d(TAG, "upload failed");
    }

    return status;
}