(Chilkat for Android™ API)
Controlling Paths of Files Added to Zip

When appending files to a .zip, it can be difficult to get the paths exactly as you want them. This example describes a way that you can control the path information when adding a single file at a time to a .zip.

Download: Chilkat for Android™ Java Libraries

// 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 {
  // Called when the activity is first created.
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    TextView tv = new TextView(this);
    String outStr = "";

    CkZip zip = new CkZip();

    boolean success;

    success = zip.UnlockComponent("anything for 30-day trial");
    if (success != true) {
        outStr += "Failed to unlock zip component" + "\n";
        tv.setText(outStr);
        setContentView(tv);
        return;
    }

    //  Intialize the zip object by calling NewZip.
    zip.NewZip("myZip.zip");

    //  Add a reference to a file on disk to the zip object.
    //  (When appending files to a zip, the files are not actually
    //  read into memory.  References to the file(s) are added.
    //  When WriteZip is called, the referenced files are streamed in
    //  and compressed to the .zip.)
    boolean saveExtraPath;
    saveExtraPath = false;
    success = zip.AppendOneFileOrDir("/temp/a/hamlet.xml",saveExtraPath);
    //  For brevity, this example will not check the return status...

    //  The saveExtraPath argument, if set, will cause the path information
    //  passed in the 1st argument to be saved in the .zip.

    //  To add "a/hamlet.xml", do this:
    zip.put_AppendFromDir("/temp");
    saveExtraPath = true;
    success = zip.AppendOneFileOrDir("a/hamlet.xml",saveExtraPath);

    //  To add "temp/a/hamlet.xml", do this:
    zip.put_AppendFromDir("/");
    saveExtraPath = true;
    success = zip.AppendOneFileOrDir("temp/a/hamlet.xml",saveExtraPath);

    //  The zip written here will contain hamlet.xml three times,
    //  each with a different relative path.
    success = zip.WriteZipAndClose();
    tv.setText(outStr);
    setContentView(tv);
  }

  static {
      // Important: Make sure the name passed to loadLibrary matches the shared library
      // found in your project's libs/armeabi directory.
      //  for "libchilkat.so", pass "chilkat" to loadLibrary
      //  for "libchilkatemail.so", pass "chilkatemail" to loadLibrary
      //  etc.
      // 
      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."
  }
}