(Android™) Initialize an HTTP Request from a URL

Demonstrates how to initialize an HTTP request object from a URL.

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);

    CkHttpRequest req = new CkHttpRequest();

    // Loads the HTTP request object from a URL
    req.SetFromUrl("https://www.youtube.com/watch?v=fAZdTchQePc&t=45s");

    // The verb will be "GET"
    Log.i(TAG, "verb = " + req.httpVerb());
    // The path will be "/watch"
    Log.i(TAG, "path = " + req.path());

    // The output of this loop will be
    // 0) v: fAZdTchQePc
    // 1) t: 45s
    int i;
    int numParams = req.get_NumParams();
    for (i = 0; i <= numParams - 1; i++) {
        Log.i(TAG, String.valueOf(i) + ") " + req.getParamName(i) + ": " + req.getParamValue(i));
        }

    // View the request that would be sent if SynchronousRequest is called.
    // The HTTP request will be a GET that looks like this:
    // 
    //     GET /watch?v=fAZdTchQePc&t=45s HTTP/1.1
    //     Host: domain
    // 
    // Note: The HOST header will automatically get filled in with the actual domain when SynchronousRequest is called.

    Log.i(TAG, req.generateRequestText());

    // We can add additional params
    req.AddParam("artist","Richard Bona");
    req.AddParam("musicType","Jazz");
    req.AddParam("festival","Estival Jazz Lugano");
    req.AddParam("year","2008");

    // Now examine the request that would be sent
    // 
    //     GET /watch?v=fAZdTchQePc&t=45s&artist=Richard%20Bona&musicType=Jazz&festival=Estival%20Jazz%20Lugano&year=2008 HTTP/1.1
    //     Host: domain
    // 
    Log.i(TAG, req.generateRequestText());

    // We can remove a parameter:
    req.RemoveParam("t");
    Log.i(TAG, req.generateRequestText());

    // What happens if we change the request from a GET to a POST?
    req.put_HttpVerb("POST");
    // The request will now look like this:
    // 
    //    POST /watch HTTP/1.1
    //    Host: domain
    //    Content-Length: 93
    //    
    //    v=fAZdTchQePc&artist=Richard%20Bona&musicType=Jazz&festival=Estival%20Jazz%20Lugano&year=2008
    // 
    Log.i(TAG, req.generateRequestText());

    // What happens if we make it a multipart/form-data?
    req.put_ContentType("multipart/form-data");
    // Now the POST looks like this:
    //    
    //    POST /watch HTTP/1.1
    //    Content-Type: multipart/form-data; boundary=------------020906020106050705030807
    //    Host: domain
    //    Content-Length: 545
    //    
    //    --------------020906020106050705030807
    //    Content-Disposition: form-data; name="v"
    //    
    //    fAZdTchQePc
    //    --------------020906020106050705030807
    //    Content-Disposition: form-data; name="artist"
    //    
    //    Richard Bona
    //    --------------020906020106050705030807
    //    Content-Disposition: form-data; name="musicType"
    //    
    //    Jazz
    //    --------------020906020106050705030807
    //    Content-Disposition: form-data; name="festival"
    //    
    //    Estival Jazz Lugano
    //    --------------020906020106050705030807
    //    Content-Disposition: form-data; name="year"
    //    
    //    2008
    //    --------------020906020106050705030807--

    Log.i(TAG, req.generateRequestText());

  }

  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."
  }
}