Android™

Gzip Compress In Memory and Base64 Encode

See more Gzip Examples

Demonstrates how to Gzip compress in-memory data and then encode the compressed data to base64. 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.

    CkGzip gzip = new CkGzip();

    // This example will load a file into the fileData object.
    // Your application might load fileData from other sources..
    CkBinData fileData = new CkBinData();
    success = fileData.LoadFile("qa_data/xml/hamlet.xml");
    if (success != true) {
        Log.i(TAG, "Failed to load file.");
        return;
        }

    // In-place compress the contents of fileData
    success = gzip.CompressBd(fileData);
    if (success != true) {
        Log.i(TAG, gzip.lastErrorText());
        return;
        }

    // Get the base64 encoded compressed data (in a single line).
    String strBase64 = fileData.getEncoded("base64");
    Log.i(TAG, strBase64);
    Log.i(TAG, "--------");

    // To get the base64 in multiple lines, as it might appear in MIME,
    // use "base64-mime".
    String strBase64MultiLine = fileData.getEncoded("base64-mime");
    Log.i(TAG, strBase64MultiLine);

  }

  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."
  }
}