Object Storage Service:Progress bar (Android SDK)

Prerequisites

Before you begin, ensure that you have:

• An OSSClient instance initialized using a custom domain name or Security Token Service (STS). For details, see Initialization

Track download progress

Attach an OSSProgressCallback listener to the GetObjectRequest before submitting the asynchronous download. The listener receives currentSize and totalSize on each progress update, which you can use to update a UI progress bar.

// Construct a download request.
// Specify the bucket name and the full path of the object.
// The full path cannot contain the bucket name.
GetObjectRequest get = new GetObjectRequest("examplebucket", "exampledir/exampleobject.txt");

// Attach a progress listener to receive download progress updates.
get.setProgressListener(new OSSProgressCallback<GetObjectRequest>() {
    @Override
    public void onProgress(GetObjectRequest request, long currentSize, long totalSize) {
        Log.d("GetObject", "currentSize: " + currentSize + " totalSize: " + totalSize);
        // Update your UI progress bar here.
    }
});

// Download the object asynchronously.
OSSAsyncTask task = oss.asyncGetObject(get, new OSSCompletedCallback<GetObjectRequest, GetObjectResult>() {
    @Override
    public void onSuccess(GetObjectRequest request, GetObjectResult result) {
        Log.d("GetObject", "downLoadSuccess");
    }

    @Override
    public void onFailure(GetObjectRequest request, ClientException clientException, ServiceException serviceException) {
        if (clientException != null) {
            // A client-side error occurred, such as a network failure.
            clientException.printStackTrace();
        }
        if (serviceException != null) {
            // The server returned an error.
            Log.e("ErrorCode", serviceException.getErrorCode());
            Log.e("RequestId", serviceException.getRequestId());
            Log.e("HostId", serviceException.getHostId());
            Log.e("RawMessage", serviceException.getRawMessage());
        }
    }
});

What's next

• For the complete sample code, see OSSGetObjectTest.java on GitHub.

• To initialize an OSSClient instance, see Initialization.