(Android™) Find a ZIP Entry by Exact Path Using EntryOf

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This example demonstrates how to use the EntryOf method to find a ZIP entry whose stored path exactly matches a specified path.

Unlike EntryMatching, which performs wildcard matching, EntryOf performs an exact path lookup.

This method is useful when:

• The exact ZIP path is already known
• Retrieving a specific file or directory entry
• Verifying whether a particular entry exists in the ZIP archive

Suppose the ZIP archive contains:

docs/
docs/readme.txt
docs/manual.pdf
images/logo.png
data/config/settings.json

ZIP archives may optionally contain explicit directory entries such as docs/. These directory entries can also be retrieved using EntryOf.

The example:

• Finds an exact file entry
• Finds an exact directory entry
• Demonstrates the difference between file and directory entries

Note: This example requires Chilkat v11.0.0 or greater.

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);

    boolean success = false;

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

    success = false;

    // Open an existing ZIP archive.
    CkZip zip = new CkZip();

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

    CkZipEntry entry = new CkZipEntry();

    // ------------------------------------------------------------
    // Find a specific file entry by its exact ZIP path.

    success = zip.EntryOf("docs/readme.txt",entry);

    if (success == true) {
        Log.i(TAG, "Found file entry:");
        Log.i(TAG, "  FileName = " + entry.fileName());
        Log.i(TAG, "  IsDirectory = " + String.valueOf(entry.get_IsDirectory()));
        Log.i(TAG, "");
        }

    // ------------------------------------------------------------
    // Find a directory entry.
    // 
    // ZIP archives may optionally contain explicit directory entries.
    // In this example, "docs/" is a separate directory entry.

    success = zip.EntryOf("docs/",entry);

    if (success == true) {
        Log.i(TAG, "Found directory entry:");
        Log.i(TAG, "  FileName = " + entry.fileName());
        Log.i(TAG, "  IsDirectory = " + String.valueOf(entry.get_IsDirectory()));
        Log.i(TAG, "");
        }

    // ------------------------------------------------------------
    // Attempt to find a non-existent entry.

    success = zip.EntryOf("images/missing.png",entry);

    if (success == false) {
        Log.i(TAG, "The entry images/missing.png was not found.");
        }

    zip.CloseZip();

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

  }

  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."
  }
}