Android™

Gzip a File

See more Gzip Examples

Demonstrates how to create a .gz (gzipped file). 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 requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkGzip gzip = new CkGzip();

    // This will create a .gz such that when ungzipped by a tool such as 7-Zip,
    // it will create "qa_data/hamlet.xml".
    success = gzip.CompressFile("qa_data/hamlet.xml","qa_output/hamlet.xml.gz");
    if (success == false) {
        Log.i(TAG, gzip.lastErrorText());
        return;
        }

    // Call CompressFile2 to explicitly specify the ungzip path
    // For example, this will create a .gz such that when ungzipped by a tool such as 7-Zip,
    // it will create "hamlet.xml".
    String embeddedExtractPath = "hamlet.xml";
    success = gzip.CompressFile2("qa_data/hamlet.xml",embeddedExtractPath,"qa_output/hamlet2.xml.gz");
    if (success == false) {
        Log.i(TAG, gzip.lastErrorText());
        return;
        }

    Log.i(TAG, "Success.");

  }

  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."
  }
}