Puede utilizar una barra de progreso para indicar el avance de un objeto que se está cargando o descargando.
Notas de uso
Antes de ejecutar el código de ejemplo de este tema, debe crear una instancia de OSSClient mediante métodos como el uso de un nombre de dominio personalizado o Security Token Service (STS). Para obtener más información, consulte Initialization (Android SDK).
Ejemplos
A continuación se muestra un código de ejemplo sobre cómo utilizar una barra de progreso al usar asyncPutObject para cargar un objeto de forma asíncrona:
// Create an upload request.
// Specify the bucket name (for example, examplebucket), the full path of the object (for example, exampledir/exampleobject.txt), and the full path of the local file (for example, /storage/emulated/0/oss/examplefile.txt).
// Do not include the bucket name in the full path of the object.
PutObjectRequest put = new PutObjectRequest("examplebucket", "exampledir/exampleobject.txt", "/storage/emulated/0/oss/examplefile.txt");
// Set the progress callback function to display the progress bar.
put.setProgressCallback(new OSSProgressCallback<PutObjectRequest>() {
@Override
public void onProgress(PutObjectRequest request, long currentSize, long totalSize) {
// currentSize is the size of the uploaded part. Unit: bytes.
// totalSize is the total size of the file to upload. Unit: bytes.
Log.d("PutObject", "currentSize: " + currentSize + " totalSize: " + totalSize);
}
});
// Upload the file asynchronously.
OSSAsyncTask task = oss.asyncPutObject(put, new OSSCompletedCallback<PutObjectRequest, PutObjectResult>() {
@Override
public void onSuccess(PutObjectRequest request, PutObjectResult result) {
Log.d("PutObject", "UploadSuccess");
Log.d("ETag", result.getETag());
Log.d("RequestId", result.getRequestId());
}
@Override
public void onFailure(PutObjectRequest request, ClientException clientExcepion, ServiceException serviceException) {
// Request exceptions.
if (clientExcepion != null) {
// Client exceptions, such as network exceptions.
clientExcepion.printStackTrace();
}
if (serviceException != null) {
// Service exceptions.
Log.e("ErrorCode", serviceException.getErrorCode());
Log.e("RequestId", serviceException.getRequestId());
Log.e("HostId", serviceException.getHostId());
Log.e("RawMessage", serviceException.getRawMessage());
}
}
});
// task.cancel(); // Cancels the task.
// task.waitUntilFinished(); // Waits for the task to complete.Referencias
Para consultar el código de ejemplo completo sobre cómo utilizar una barra de progreso durante la carga de objetos, visite GitHub.