(Android™) Getting the HTTP Response after an Asynchronous HTTP Request Completes

Some HTTP methods return an HTTP response object. This example demonstrates how to obtain the HTTP response object for such a method when calling asynchronously.

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);

    //  All Chilkat classes can be unlocked at once at the beginning of a program
    //  by calling UnlockBundle.  It requires a Bundle unlock code.
    CkGlobal chilkatGlob = new CkGlobal();
    boolean success = chilkatGlob.UnlockBundle("Anything for 30-day trial.");
    if (success != true) {
        Log.i(TAG, chilkatGlob.lastErrorText());
        return;
        }

    CkHttp http = new CkHttp();

    //  Call the async version of the QuickGetObj method to return a task object.
    //  The task object is loaded, but is in the Inert state -- meaning it is
    //  not yet scheduled to run on Chilkat's background thread pool.
    CkTask task = http.QuickGetObjAsync("https://stackexchange.com");
    if (http.get_LastMethodSuccess() != true) {
        Log.i(TAG, http.lastErrorText());
        return;
        }

    //  Schedule the task for running on the thread pool.  This changes the task's state
    //  from Inert to Live.
    success = task.Run();
    if (success != true) {
        Log.i(TAG, task.lastErrorText());

        return;
        }

    //  The application is now free to do anything else
    //  while the HTML page is being downloaded.

    //  For this example, we'll simply sleep and periodically
    //  check to see if the QuickGetObjAsync if finished.
    while (task.get_Finished() != true) {

        //  Sleep 100 ms.
        task.SleepMs(100);

        }

    //  A finished task could be one that was canceled, aborted, or truly finished.

    //  If the task was "canceled", it was canceled prior to actually starting.  This could
    //  happen if the task was canceled while waiting in a thread pool queue to be scheduled by Chilkat's
    //  background thread pool scheduler.

    //  If the task was "aborted", it indicates that it was canceled while running in a background thread.
    //  The ResultErrorText will likely indicate that the task was aborted.

    //  If the task "completed", then it ran to completion, but the actual success/failure of the method
    //  is determined by the result obtained via a GetResult* method.  (A "completed" task will
    //  have a StatusInt equal to 7.   If the task finished, but was not completed, then it must've
    //  been aborted or canceled:
    if (task.get_StatusInt() != 7) {
        Log.i(TAG, "Task did not complete.");
        Log.i(TAG, "task status: " + task.status());

        return;
        }

    //  The synchronous call to QuickGetObj would return an HTTP response object.  To get this
    //  response object for the async call, we instantiate a new/empty HTTP response object,
    //  and then load it from the completed task.
    CkHttpResponse resp = new CkHttpResponse();

    success = resp.LoadTaskResult(task);
    if (success != true) {
        Log.i(TAG, resp.lastErrorText());

        return;
        }

    //  Now that we have the response, we can get all of the information:

    Log.i(TAG, "status code: " + String.valueOf(resp.get_StatusCode()));
    Log.i(TAG, "response header: " + resp.header());

    //  ...

  }

  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."
  }
}