[Android][AWS] How to connent to AWS S3 get data

get Keys form AWS S3

AmazonS3 s3 = new AmazonS3Client(CRED);
ListObjectsRequest lor = new ListObjectsRequest()
                             .withBucketName("myBucket")
                             .withPrefix("code/");
ObjectListing objectListing = s3.listObjects(lor);
for (S3ObjectSummary summary: objectListing.getObjectSummaries()) {
    System.out.println(summary.getKey());
}

 AWSCredentials creden=new BasicAWSCredentials(accessKey,secretKey);
    AmazonS3Client s3Client=new AmazonS3Client(creden);

S3Object object = s3Client.getObject(new GetObjectRequest(
                "BucketName", "keyName"));

        BufferedReader reader = new BufferedReader(new InputStreamReader(
                object.getObjectContent()));
        Writer writer = new OutputStreamWriter(new FileOutputStream(file));

        while (true) {
            String line = reader.readLine();
            if (line == null)
                break;
            writer.write(line + "\n");
        }
    writer.flush();
    writer.close();
    reader.close();

http://stackoverflow.com/questions/17561432/amazon-s3-listing-directories

http://stackoverflow.com/questions/26173951/amazon-s3-file-download-from-android

http://docs.aws.amazon.com/AWSJavaSDK/latest/javadoc/com/amazonaws/services/s3/model/GetObjectRequest.html#GetObjectRequest-java.lang.String-java.lang.String-