// This example consumes the tus-java-client and tus-android-client libraries
import io.tus.android.client.TusPreferencesURLStore;
import io.tus.java.client.TusClient;
import io.tus.java.client.TusUpload;
import io.tus.java.client.TusUploader;

// Create a new TusClient instance
TusClient client = new TusClient();

// Configure tus HTTP endpoint. This URL will be used for creating new uploads
// using the Creation extension
client.setUploadCreationURL(new URL("http://master.tus.io/files"));

// Enable resumable uploads by storing the upload URL in the preferences
// and preserve them after app restarts
SharedPreferences pref = getSharedPreferences("tus", 0);
client.enableResuming(new TusPreferencesURLStore(pref));

// Open a file using which we will then create a TusUpload. If you do not have
// a File object, you can manually construct a TusUpload using an InputStream.
// See the documentation for more information.
File file = new File("./cute_kitten.png");
TusUpload upload = new TusUpload(file);

// First try to resume an upload. If that's not possible we will create a new
// upload and get a TusUploader in return. This class is responsible for opening
// a connection to the remote server and doing the uploading.
TusUploader uploader = client.resumeOrCreateUpload(upload);

// Upload the file in chunks of 1KB as long as data is available. Once the
// file has been fully uploaded the method will return -1
while(uploader.uploadChunk(1024 * 1024) > -1) {
  // Calculate the progress using the total size of the uploading file and
  // the current offset.
  long totalBytes = upload.getSize();
  long bytesUploaded = uploader.getOffset();
  double progress = (double) bytesUploaded / totalBytes * 100;
}

// Allow the HTTP connection to be closed and cleaned up
uploader.finish();