(Android™) S3 Download Specific Version of File

Demonstrates how to download a file from the Amazon S3 service using the versionId query parameter.

Note: This example requires Chilkat v9.5.0.89 or later. (A problem regarding AwsSubResources w/ downloads was fixed shortly after the v9.5.0.88 release.)

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);

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

    CkHttp http = new CkHttp();

    http.put_AwsAccessKey("AWS_ACCESS_KEY");
    http.put_AwsSecretKey("AWS_SECRET_KEY");
    http.put_S3Ssl(true);
    http.put_AwsRegion("us-east-1");
    http.put_AwsEndpoint("s3.amazonaws.com");
    http.put_AwsSubResources("versionId=x8UPzRsgskmbe55lEQvhLi25PQl2lcFH");

    String bucketName = "chilkat100";
    String objectName = "frenchUtf8.txt";
    String localFilePath = "qa_output/frenchUtf8.txt";

    boolean success = http.S3_DownloadFile(bucketName,objectName,localFilePath);

    if (success != true) {
        Log.i(TAG, http.lastErrorText());
        }
    else {
        Log.i(TAG, "File downloaded.");
        }


  }

  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."
  }
}