Android™

Add Text from a StringBuilder to a ZIP Using AddSb

See more Zip Examples

This example demonstrates how to use the AddSb method to add text from a StringBuilder object as a file entry within a ZIP archive.

The text is converted to bytes using the specified character encoding before being stored in the ZIP archive.

This method is useful for dynamically generating text files entirely in memory without creating temporary files on disk.

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;

    CkZip zip = new CkZip();

    success = zip.NewZip("stringBuilderData.zip");
    if (success == false) {
        Log.i(TAG, zip.lastErrorText());
        return;
        }

    //  Create a StringBuilder containing text data.
    CkStringBuilder sb = new CkStringBuilder();

    sb.AppendLine("Line 1: Hello World!",true);
    sb.AppendLine("Line 2: This text came from a StringBuilder.",true);

    //  Add the StringBuilder contents as a UTF-8 text file
    //  stored in the ZIP archive as "docs/readme.txt".
    success = zip.AddSb("docs/readme.txt",sb,"utf-8");
    if (success == false) {
        Log.i(TAG, zip.lastErrorText());
        return;
        }

    //  Write the ZIP archive to disk and close it.
    success = zip.WriteZipAndClose();
    if (success == false) {
        Log.i(TAG, zip.lastErrorText());
        return;
        }

    Log.i(TAG, "ZIP archive created successfully.");

  }

  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."
  }
}