Android™

Create Zip in a BinData Object

See more Zip Examples

Recursively appends files in a directory tree and writes a zip archive into a Chilkat BinData object. Android™

// 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;

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkZip zip = new CkZip();

    // Initialize the zip object.  Because we will never actually write a zip file to the filesystem,
    // the filepath passed to NewZip does not matter.
    success = zip.NewZip("x.zip");
    if (success != true) {
        Log.i(TAG, zip.lastErrorText());
        return;
        }

    // Append a directory tree.  The call to AppendFiles does
    // not read the file contents or append them to the zip
    // object in memory.  It simply appends references
    // to the files so that when WriteBd, WriteZip, or WriteZipAndClose 
    // is called, the referenced files are streamed and compressed
    // into the .zip output file (or BinData object).

    boolean recurse = true;
    success = zip.AppendFiles("c:/temp/a/*",recurse);
    if (success != true) {
        Log.i(TAG, zip.lastErrorText());
        return;
        }

    // Write the zip archive into the bdZip object.
    CkBinData bdZip = new CkBinData();
    success = zip.WriteBd(bdZip);
    if (success != true) {
        Log.i(TAG, zip.lastErrorText());
        return;
        }

    // We could directly access the bytes of the zip archive, or perhaps
    // get the zip bytes in base64 format.
    String zipAsBase64 = bdZip.getEncoded("base64");
    Log.i(TAG, zipAsBase64);

    // Or the zip can be used by some other Chilkat method call that accepts
    // a BinData object as an argument.

  }

  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."
  }
}