Android™

Avoid URLs Matching Any of a Set of Patterns

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Demonstrates how to use "avoid patterns" to prevent spidering any URL that matches a wildcarded pattern. This example avoids URLs containing the substrings "java", "python", or "perl". 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;

    CkSpider spider = new CkSpider();

    //  The spider object crawls a single web site at a time.  As you'll see
    //  in later examples, you can collect outbound links and use them to 
    //  crawl the web.  For now, we'll simply spider 10 pages of chilkatsoft.com
    spider.Initialize("www.chilkatsoft.com");

    //  Add the 1st URL:
    spider.AddUnspidered("http://www.chilkatsoft.com/");

    //  Avoid URLs matching these patterns:
    spider.AddAvoidPattern("*java*");
    spider.AddAvoidPattern("*python*");
    spider.AddAvoidPattern("*perl*");

    //  Begin crawling the site by calling CrawlNext repeatedly.
    int i;
    for (i = 0; i <= 9; i++) {

        success = spider.CrawlNext();
        if (success == true) {
            //  Show the URL of the page just spidered.
            Log.i(TAG, spider.lastUrl());
            //  The HTML is available in the LastHtml property
            }
        else {
            //  Did we get an error or are there no more URLs to crawl?
            if (spider.get_NumUnspidered() == 0) {
                Log.i(TAG, "No more URLs to spider");
                }
            else {
                Log.i(TAG, spider.lastErrorText());
                }

            }

        //  Sleep 1 second before spidering the next URL.
        spider.SleepMs(1000);
        }


  }

  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."
  }
}