Android™

Async Methods Returning an String

See more Async Examples

Demonstrates how to call an asynchronous method that returns a string. This example sends an HTTPS GET request to a URL and gets the HTML response. 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;

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

    CkHttp http = new CkHttp();

    CkTask task = http.QuickGetStrAsync("https://www.chilkatsoft.com/helloWorld.html");
    if (http.get_LastMethodSuccess() == false) {
        Log.i(TAG, http.lastErrorText());
        return;
        }

    //  Start the background task.
    success = task.Run();
    if (!success) {
        Log.i(TAG, task.lastErrorText());

        return;
        }

    //  The application is now free to do anything else

    //  For this example, we'll simply sleep and periodically
    //  check to see if the HTTPS GET 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 QuickGetStr method returns a string.  Therefore, after the task is finished,
    //  we can get the string result by calling GetResultString.  This is the return value had
    //  we called QuickGetStr synchronously.
    String html = task.getResultString();

    Log.i(TAG, html);


  }

  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."
  }
}