// Initialize TransferConfig. The default configuration is used here. If you need to customize it, see the SDK API documentation.
// By default, files larger than or equal to 2 MB are automatically uploaded in parts, with a part size of -1 MB. You can modify the part size threshold using the following code.
TransferConfig transferConfig = new TransferConfig.Builder()
        // Set the minimum object size to enable multipart upload. The default is 2 MB.
        .setDivisionForUpload(2097152)
        // Set the part size for multipart upload. The default is 1 MB.
        .setSliceSizeForUpload(1048576)
        // Set whether to force simple upload and disable multipart upload.
        .setForceSimpleUpload(false)
        .build();
// Initialize TransferManager
TransferManager transferManager = new TransferManager(cosXmlService,
        transferConfig);

// A bucket name consists of bucketname-appid. The appid must be included. You can view bucket names in the COS console. https://console.tencentcloud.com/cos5/bucket
String bucket = "examplebucket-1250000000";
String cosPath = "exampleobject.txt"; // The location identifier of the object in the bucket, also known as the object key.
// Local directory path
String savePathDir = context.getExternalCacheDir().toString();
// The file name saved locally. If left blank (null), it will be the same as the file name on COS.
String savedFileName = "exampleobject.txt";

Context applicationContext = context.getApplicationContext(); // application
// context
COSXMLDownloadTask cosxmlDownloadTask =
        transferManager.download(applicationContext,
                bucket, cosPath, savePathDir, savedFileName);

// Set the download progress callback
cosxmlDownloadTask.setCosXmlProgressListener(new CosXmlProgressListener() {
    @Override
    public void onProgress(long complete, long target) {
        // todo Do something to update progress...
    }
});
// Set the result callback
cosxmlDownloadTask.setCosXmlResultListener(new CosXmlResultListener() {
    @Override
    public void onSuccess(CosXmlRequest request, CosXmlResult result) {
        COSXMLDownloadTask.COSXMLDownloadTaskResult downloadTaskResult =
                (COSXMLDownloadTask.COSXMLDownloadTaskResult) result;
    }

    // If you call the API using kotlin, note that the exception in the callback method must be nullable. Otherwise, the onFail method will not be called, as follows:
    // The type of clientException is CosXmlClientException?, and the type of serviceException is CosXmlServiceException?
    @Override
    public void onFail(CosXmlRequest request,
                       @Nullable CosXmlClientException clientException,
                       @Nullable CosXmlServiceException serviceException) {
        if (clientException != null) {
            clientException.printStackTrace();
        } else {
            serviceException.printStackTrace();
        }
    }
});
// Set the task status callback to view the task progress.
cosxmlDownloadTask.setTransferStateListener(new TransferStateListener() {
    @Override
    public void onStateChanged(TransferState state) {
        // todo notify transfer state
    }
});

cosxmlDownloadTask.pause();

cosxmlDownloadTask.resume();

cosxmlDownloadTask.cancel();

// TransferManager supports resumable downloads. You only need to ensure that the bucket, cosPath, savePathDir, and savedFileName
// If the parameters remain the same, the SDK will resume the download from the last position.
// A bucket name consists of bucketname-appid. The appid must be included. You can view bucket names in the COS console. https://console.tencentcloud.com/cos5/bucket
String bucket = "examplebucket-1250000000";
String cosPath = "exampleobject.txt"; // The location identifier of the object in the bucket, also known as the object key.
// Local directory path
String savePathDir = context.getExternalCacheDir().toString();
// The file name saved locally. If left blank (null), it will be the same as the file name on COS.
String savedFileName = "exampleobject.txt";

GetObjectRequest getObjectRequest = new GetObjectRequest(bucket, cosPath, savePathDir, savedFileName);

Context applicationContext = context.getApplicationContext(); // application
// context
COSXMLDownloadTask cosxmlDownloadTask =
        transferManager.download(applicationContext, getObjectRequest);

// The location identifier of the object in the bucket, also known as the object key.
String[] cosPaths = new String[] {
        "exampleobject1.txt",
        "exampleobject2.txt",
        "exampleobject3.txt",
};

for (String cosPath : cosPaths) {
    COSXMLDownloadTask cosxmlDownloadTask =
            transferManager.download(applicationContext,
                    bucket, cosPath, savePathDir, savedFileName);
    // Set the result callback.
    cosxmlDownloadTask.setCosXmlResultListener(new CosXmlResultListener() {
        @Override
        public void onSuccess(CosXmlRequest request, CosXmlResult result) {
            COSXMLDownloadTask.COSXMLDownloadTaskResult downloadResult =
                    (COSXMLDownloadTask.COSXMLDownloadTaskResult) result;
        }

    // If you call the API using kotlin, note that the exception in the callback method must be nullable. Otherwise, the onFail method will not be called, as follows:
    // The type of clientException is CosXmlClientException?, and the type of serviceException is CosXmlServiceException?
    @Override
    public void onFail(CosXmlRequest request,
                       @Nullable CosXmlClientException clientException,
                       @Nullable CosXmlServiceException serviceException) {
            if (clientException != null) {
                clientException.printStackTrace();
            } else {
                serviceException.printStackTrace();
            }
        }
    });
}

boolean isTruncated = true;
String marker = null;
try {
    while (isTruncated) {
        GetBucketRequest getBucketRequest = new GetBucketRequest(region, bucket, directoryPath);
        // Set pagination information.
        getBucketRequest.setMarker(marker);
        // Do not query subdirectories.
        getBucketRequest.setDelimiter("/");
        GetBucketResult getBucketResult = cosXmlService.getBucket(getBucketRequest);
        // Batch download.
        for (ListBucket.Contents content : getBucketResult.listBucket.contentsList) {
            GetObjectRequest getObjectRequest = new GetObjectRequest(bucket, content.key, savePathDir);
            transferManager.download(context,getObjectRequest);
        }
        isTruncated = getBucketResult.listBucket.isTruncated;
        marker = getBucketResult.listBucket.nextMarker;
    }
} catch (CosXmlServiceException serviceException) {
    serviceException.printStackTrace();
} catch (CosXmlClientException clientException) {
    clientException.printStackTrace();
}

// Initialize TransferConfig. The default configuration is used here. If you need to customize it, see the SDK API documentation.
TransferConfig transferConfig = new TransferConfig.Builder().build();
// Initialize TransferManager
CosXmlServiceConfig cosXmlServiceConfig = new CosXmlServiceConfig.Builder()
        .setRegion("ap-guangzhou")
        .builder();
// When generating a CosXmlService for anonymous download, you do not need to provide a key generator.
CosXmlService cosXmlService = new CosXmlService(context, cosXmlServiceConfig);
TransferManager transferManager = new TransferManager(cosXmlService, transferConfig);
// A bucket name consists of bucketname-appid. The appid must be included. You can view bucket names in the COS console. https://console.tencentcloud.com/cos5/bucket
String bucket = "examplebucket-1250000000";
String cosPath = "exampleobject.txt"; // The location identifier of the object in the bucket, also known as the object key.
// Local directory path
String savePathDir = context.getExternalCacheDir().toString();
// The file name saved locally. If left blank (null), it will be the same as the file name on COS.
String savedFileName = "exampleobject.txt";

GetObjectRequest getObjectRequest = new GetObjectRequest(bucket, cosPath, savePathDir, savedFileName);

Context applicationContext = context.getApplicationContext(); // application
// context
COSXMLDownloadTask cosxmlDownloadTask =
        transferManager.download(applicationContext, getObjectRequest);

String bucket = "examplebucket-1250000000"; // Bucket name. Format: BucketName-APPID
String cosPath = "exampleobject.txt"; // The location identifier of the object in the bucket, also known as the object key.
String savePath = context.getExternalCacheDir().toString(); // Local path

GetObjectRequest getObjectRequest = new GetObjectRequest(bucket, cosPath,
        savePath);
getObjectRequest.setProgressListener(new CosXmlProgressListener() {
    @Override
    public void onProgress(long progress, long max) {
        // todo Do something to update progress...
    }
});

cosXmlService.getObjectAsync(getObjectRequest, new CosXmlResultListener() {
    @Override
    public void onSuccess(CosXmlRequest cosXmlRequest,
                          CosXmlResult cosXmlResult) {
        GetObjectResult getObjectResult = (GetObjectResult) cosXmlResult;
    }

    // If you call the API using kotlin, note that the exception in the callback method must be nullable. Otherwise, the onFail method will not be called, as follows:
    // The type of clientException is CosXmlClientException?, and the type of serviceException is CosXmlServiceException?
    @Override
    public void onFail(CosXmlRequest cosXmlRequest,
                       @Nullable CosXmlClientException clientException,
                       @Nullable CosXmlServiceException serviceException) {
        if (clientException != null) {
            clientException.printStackTrace();
        } else {
            serviceException.printStackTrace();
        }
    }
});