(Android™) How to Avoid Large Strings in HTTP Responses

In some programming languages/environments, returning and passing large strings is problematic for both performance and other reasons (for example, with SQL Server limitations on sizes varchar variables).

One way of avoiding the need to return the actual string data, is to pass the data from one place to another via a Chilkat StringBuilder or BinData object. This example demonstrates a simple HTTP GET where the response body contains XML approximately 274K in size. The response body is loaded into the Chilkat.Xml without the XML content ever needing to leave the native code internal to Chilkat.

Note: This example requires Chilkat v9.5.0.64 or greater.

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// 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);

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

    CkHttp http = new CkHttp();

    CkHttpResponse resp = http.QuickGetObj("https://www.chilkatsoft.com/hamlet.xml");
    if (http.get_LastMethodSuccess() != true) {
        Log.i(TAG, http.lastErrorText());
        return;
        }

    CkStringBuilder sb = new CkStringBuilder();
    // Copy the response body to sb.
    boolean success = resp.GetBodySb(sb);

    CkXml xml = new CkXml();
    // Load the XML from the sb.
    boolean bAutoTrim = false;
    success = xml.LoadSb(sb,bAutoTrim);

    Log.i(TAG, "The response body was " + String.valueOf(sb.get_Length()) + " characters in length.");
    Log.i(TAG, "Success.");

    // The output is:
    // 
    // 	The response body was 279658 characters in length.
    // 	Success.

  }

  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."
  }
}