(Android™) Compress Bytes

Demonstrates how to compress binary data.

Chilkat Android™ Downloads Android™ Java Libraries Android C/C++ 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 {

  private static final String TAG = "Chilkat";

  // Called when the activity is first created.
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

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

    CkFileAccess fac = new CkFileAccess();

    CkByteData fileBytes = new CkByteData();
    success = fac.ReadEntireFile("qa_data/bmp/big.bmp",fileBytes);
    if (fac.get_LastMethodSuccess() != true) {
        Log.i(TAG, fac.lastErrorText());
        return;
        }

    CkCompression compress = new CkCompression();
    compress.put_Algorithm("deflate");

    CkByteData compressedBytes = new CkByteData();
    success = compress.CompressBytes(fileBytes,compressedBytes);
    if (compress.get_LastMethodSuccess() != true) {
        Log.i(TAG, compress.lastErrorText());
        return;
        }

    boolean success = fac.WriteEntireFile("qa_output/compressedBmp.dat",compressedBytes);
    if (fac.get_LastMethodSuccess() != true) {
        Log.i(TAG, fac.lastErrorText());
        return;
        }


  }

  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."
  }
}