Android unzip file using ZipInputStream

Android unzip file using ZipInputStream

public class unzip extends Activity {
    /** Called when the activity is first created. */

    static final int BUFFER = 2048;
    TextView textView;

@Override
    public void onCreate(Bundle savedInstanceState) {

        textView = new TextView(this);
        super.onCreate(savedInstanceState);
        textView.setText(“Main Activity”);
        extractZipfile();
        setContentView(textView);
    }

 

private void extractZipfile() {
        String extractDir = getApplicationContext().getFilesDir()
                .getAbsolutePath()
                + “/unzip/”;
        try {
            BufferedOutputStream dest = null;
            ZipInputStream zis = new ZipInputStream(getResources()
                    .openRawResource(R.raw.book));
            ZipEntry entry;
            while ((entry = zis.getNextEntry()) != null) {
                File file = new File(extractDir + entry.getName());
                
              
                if (file.exists()) {
                    textView.append(“\n” + file.getAbsolutePath() + “\texists”);
                    continue;
                }
                if (entry.isDirectory()) {
                    if (!file.exists())
                        file.mkdirs();
                    textView.append(“\nCreate directory: “
                            + file.getAbsolutePath());
                    continue;
                }
                textView.append(“\nExtracting:” + entry);
                int count;
                byte data[] = new byte[BUFFER];
                textView.append(” to ” + file.getAbsolutePath());

                FileOutputStream fos = new FileOutputStream(file);
                dest = new BufferedOutputStream(fos, BUFFER);
                while ((count = zis.read(data, 0, BUFFER)) != -1) {
                    dest.write(data, 0, count);
                }
                dest.flush();
                dest.close();
            }
            zis.close();
        } catch (Exception e) {
            // TODO: handle exception
            e.printStackTrace();
        }
    }