You can use a progress bar to indicate the progress of an object that is being uploaded or downloaded. The GetObject operation is used in the topic to describe how to display the progress bar of an object that is being downloaded.
Usage notes
Before you run the sample code in this topic, you must create an OSSClient instance by using methods such as using a custom domain name or Security Token Service (STS). For more information, see Initialization.
Examples
The following sample code provides an example on how to display the progress of an object named exampleobject.txt that is being downloaded from a bucket named examplebucket:
// Construct a download request.
// Specify the bucket name (for example, examplebucket) and the full path of the object (for example, exampledir/exampleobject.txt). The full path of the object cannot contain the bucket name.
GetObjectRequest get = new GetObjectRequest("examplebucket", "exampledir/exampleobject.txt");
// Set the progress callback function to display the progress bar.
get.setProgressListener(new OSSProgressCallback<GetObjectRequest>() {
@Override
public void onProgress(GetObjectRequest request, long currentSize, long totalSize) {
Log.d("GetObject", "currentSize: " + currentSize + " totalSize: " + totalSize);
}
});
// 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) {
// The request failed.
if (clientException != null) {
// A client exception occurred, such as a network exception.
clientException.printStackTrace();
}
if (serviceException != null) {
// A server-side exception occurred.
Log.e("ErrorCode", serviceException.getErrorCode());
Log.e("RequestId", serviceException.getRequestId());
Log.e("HostId", serviceException.getHostId());
Log.e("RawMessage", serviceException.getRawMessage());
}
}
});References
For the complete sample code on how to use the progress bar during object download, visit GitHub.
For more information about how to initialize an OSSClient instance, see Initialization.