我如何获得amazon多文件上传s3 android的进度条

Question

now am using MultipleFileUpload method .how can i get progress bar for that .please some help me.

 MultipleFileUpload upload = tm.uploadFileList(
            "backetname", s3_path, myDir_temp, collection_file, metadataProvider);

Answer 1

Use the AWS SDK for Android and Check the AWS docs for the same: https://docs.aws.amazon.com/mobile/sdkforandroid/developerguide/s3transferutility.html

With the Transfer Utility, the download() and upload() methods return a TransferObserver object. This object gives access to:

The state (now specified as an enum) The total bytes transferred thus far The total bytes to transfer (for easily calculating progress bars) A unique ID that you can use to keep track of distinct transfers Given the transfer ID, this TransferObserver object can be retrieved from anywhere in your app, including if the app is killed. It also lets you create a TransferListener, which will be updated on state or progress change, as well as when an error occurs.

To get the progress of a download or upload, call setTransferListener() on your TransferObserver. This requires you to implement onStateChanged, onProgressChanged, and onError. For example:

TransferObserver transferObserver = download(MY_BUCKET, OBJECT_KEY, MY_FILE);
transferObserver.setTransferListener(new TransferListener(){

    @Override
    public void onStateChanged(int id, TransferState state) {
        // do something
    }

    @Override
    public void onProgressChanged(int id, long bytesCurrent, long bytesTotal) {
        int percentage = (int) (bytesCurrent/bytesTotal * 100);
        //Display percentage transfered to user
    }

    @Override
    public void onError(int id, Exception ex) {
        // do something
    }

});