Android™

HTTP Download with Progress Event Callbacks

See more HTTP Examples

Downloads a file via HTTP or HTTPS and uses event callbacks to monitor progress. 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 httpProgress extends CkHttpProgress
  {

  public boolean AbortCheck()
    {
    boolean abort = false;
    // Application code goes here.
    // Return true to abort, false to continue.
    return abort;
    }

  public boolean PercentDone(int percentDone)
    {
    boolean abort = false;
    Log.i(TAG, "Percent Done: " + String.valueOf(percentDone));
    // Explicitly abort at 25% or greater.
    // Remove this to allow for the HTTP download to run to completion.
    if (percentDone > 25) {
        abort = true;
        }
    // Return true to abort, false to continue.
    return abort;
    }

  public void ProgressInfo(String name, String value)
    {
    Log.i(TAG, name + ": " + value);
    return;
    }

};

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.

    CkHttp http = new CkHttp();
    httpProgress http_progress = new httpProgress();
    http.put_EventCallbackObject(http_progress);

    // Set a heartbeat in milliseconds 
    http.put_HeartbeatMs(200);

    // Download a file...
    String localFilePath = "qa_output/Python-3.4.4.tar.xz";
    success = http.Download("https://www.python.org/ftp/python/3.4.4/Python-3.4.4.tar.xz",localFilePath);
    if (success == false) {
        Log.i(TAG, http.lastErrorText());
        return;
        }

    Log.i(TAG, "OK!");

  }

  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."
  }
}