Creating a ZIP file with Android

Question

How can I create a ZIP file from an XML file?

I want to take a backup of all my inbox messages in XML, and compress the XML file and store it on an SD card.

Answer 1

The following code solved my problem.

public class makeZip {
    static final int BUFFER = 2048;

    ZipOutputStream out;
    byte data[];

    public makeZip(String name) {
        FileOutputStream dest=null;
        try {
            dest = new FileOutputStream(name);
        } 
        catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        out = new ZipOutputStream(new BufferedOutputStream(dest));
        data = new byte[BUFFER];
    }

    public void addZipFile (String name) {
        Log.v("addFile", "Adding: ");
        FileInputStream fi=null;
        try {
            fi = new FileInputStream(name);
            Log.v("addFile", "Adding: ");
        }
        catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            Log.v("atch", "Adding: ");
        }
        BufferedInputStream origin = new BufferedInputStream(fi, BUFFER);
        ZipEntry entry = new ZipEntry(name);
        try {
            out.putNextEntry(entry);
            Log.v("put", "Adding: ");
        }
        catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        int count;
        try {
            while((count = origin.read(data, 0, BUFFER)) != -1) {
               out.write(data, 0, count);
               //Log.v("Write", "Adding: "+origin.read(data, 0, BUFFER));
            }
        }
        catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
             Log.v("catch", "Adding: ");
        }
        try {
            origin.close();
        }
        catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    public void closeZip () {
        try {
            out.close();
        }
        catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }