AWS S3 Android SDK 你在哪里指定访问密钥和秘密？

Question

我正在关注：http://docs.aws.amazon.com/mobile/sdkforandroid/developerguide/s3transferutility.html ....... 在 android 调用中，您在哪里指定访问密钥 ID 和秘密访问密钥？如果我不提供它们，它怎么知道我可以访问？

CognitoCachingCredentialsProvider credentialsProvider = new CognitoCachingCredentialsProvider(
                context,    /* get the context for the application */
                "COGNITO_IDENTITY_POOL",    /* Identity Pool ID */
                Regions.US_EAST_1           /* Region for your identity pool--US_EAST_1 or EU_WEST_1*/
        );

        // Create an S3 client
        AmazonS3 s3 = new AmazonS3Client(credentialsProvider);

        TransferUtility transferUtility = new TransferUtility(s3, context);

        File file = new File(filePath);

        TransferObserver observer = transferUtility.upload(
                BuildConfig.S3_BUCKET,     /* The bucket to upload to */
                "uploads",    /* The key for the uploaded object */
                file        /* The file where the data to upload exists */
        );

         observer.setTransferListener(new TransferListener().
           ...

Answer 1

您可以使用访问密钥和密钥创建AmazonS3Client，如下所述：

        AmazonS3Client s3client = new AmazonS3Client(new AWSCredentials() {
            @Override
            public String getAWSAccessKeyId() {
                return "accesskeyhere";
            }

            @Override
            public String getAWSSecretKey() {
                return "secretkeyhere";
            }
        });