我正在上传视频和照片。它的工作正常。现在我想用百分比上传数据时显示进度条。我从android hive参考并在 httpclient 中实现并修改了它因此 httpurlconnection 。任何帮助都会感激。谢谢。
这是异步任务执行的主要活动。
protected void onProgressUpdate(Integer... progress) {
// Making progress bar visible
progressBar.setVisibility(View.VISIBLE);
// updating progress bar value
progressBar.setProgress(progress[0]);
// updating percentage value
txtPercentage.setText(String.valueOf(progress[0]) + "%");
}
@Override
protected String doInBackground(Void... params) {
return uploadFile();
}
@SuppressWarnings("deprecation")
private String uploadFile() {
String responseString = null;
String charset = "UTF-8";
String requestURL = "YOUR_URL";
VideoUpload multipart = null;
try {
multipart = new VideoUpload(Config.FILE_UPLOAD_URL, charset);
} catch (IOException e) {
e.printStackTrace();
}
{
//========================================================
AndroidMultiPartEntity entity = new AndroidMultiPartEntity(
new AndroidMultiPartEntity.ProgressListener() {
@Override
public void transferred(long num) {
publishProgress((int) ((num / (float) totalSize) * 100));
}
});
//========================================================
multipart.addFormField("website", "www.androidhive.info");
multipart.addFormField("email", "abc@gmail.com");
try {
multipart.addFilePart("image", new File(filePath));
} catch (IOException e) {
e.printStackTrace();
}
try {
List<String> response = multipart.finish(); // response from server.
} catch (IOException e) {
e.printStackTrace();
}
}
return responseString;
}
@Override
protected void onPostExecute(String result) {
Log.e(TAG, "Response from server: " + result);
// showing the server response in an alert dialog
showAlert(result);
super.onPostExecute(result);
}
}
这是我对httpurlconnections及其工作的升级课程。
public VideoUpload(String requestURL, String charset)
throws IOException {
this.charset = charset;
// creates a unique boundary based on time stamp
boundary = "===" + System.currentTimeMillis() + "===";
URL url = new URL(requestURL);
httpConn = (HttpURLConnection) url.openConnection();
httpConn.setUseCaches(false);
httpConn.setDoOutput(true); // indicates POST method
httpConn.setDoInput(true);
httpConn.setRequestProperty("Content-Type",
"multipart/form-data; boundary=" + boundary);
httpConn.setRequestProperty("User-Agent", "CodeJava Agent");
httpConn.setRequestProperty("Test", "Bonjour");
outputStream = httpConn.getOutputStream();
writer = new PrintWriter(new OutputStreamWriter(outputStream, charset),
true);
}
/**
* Adds a form field to the request
*
* @param name field name
* @param value field value
*/
public void addFormField(String name, String value) {
writer.append("--" + boundary).append(LINE_FEED);
writer.append("Content-Disposition: form-data; name=\"" + name + "\"")
.append(LINE_FEED);
writer.append("Content-Type: text/plain; charset=" + charset).append(
LINE_FEED);
writer.append(LINE_FEED);
writer.append(value).append(LINE_FEED);
writer.flush();
}
/**
* Adds a upload file section to the request
*
* @param fieldName name attribute in <input type="file" name="..." />
* @param uploadFile a File to be uploaded
* @throws IOException
*/
public void addFilePart(String fieldName, File uploadFile)
throws IOException {
String fileName = uploadFile.getName();
writer.append("--" + boundary).append(LINE_FEED);
writer.append(
"Content-Disposition: form-data; name=\"" + fieldName
+ "\"; filename=\"" + fileName + "\"")
.append(LINE_FEED);
writer.append(
"Content-Type: "
+ URLConnection.guessContentTypeFromName(fileName))
.append(LINE_FEED);
writer.append("Content-Transfer-Encoding: binary").append(LINE_FEED);
writer.append(LINE_FEED);
writer.flush();
FileInputStream inputStream = new FileInputStream(uploadFile);
byte[] buffer = new byte[4096];
int bytesRead = -1;
while ((bytesRead = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, bytesRead);
}
outputStream.flush();
inputStream.close();
writer.append(LINE_FEED);
writer.flush();
}
/**
* Adds a header field to the request.
*
* @param name - name of the header field
* @param value - value of the header field
*/
public void addHeaderField(String name, String value) {
writer.append(name + ": " + value).append(LINE_FEED);
writer.flush();
}
/**
* Completes the request and receives response from the server.
*
* @return a list of Strings as response in case the server returned
* status OK, otherwise an exception is thrown.
* @throws IOException
*/
public List<String> finish() throws IOException {
List<String> response = new ArrayList<String>();
writer.append(LINE_FEED).flush();
writer.append("--" + boundary + "--").append(LINE_FEED);
writer.close();
// checks server's status code first
int status = httpConn.getResponseCode();
if (status == HttpURLConnection.HTTP_OK) {
BufferedReader reader = new BufferedReader(new InputStreamReader(
httpConn.getInputStream()));
String line = null;
while ((line = reader.readLine()) != null) {
response.add(line);
}
reader.close();
httpConn.disconnect();
} else {
throw new IOException("Server returned non-OK status: " + status);
}
return response;
}
这里我从androidhive学习了进度栏课程，但我不知道如何使用它
public class AndroidMultiPartEntity extends MultipartEntity
{
private final ProgressListener listener;
public AndroidMultiPartEntity(final ProgressListener listener) {
super();
this.listener = listener;
}
public AndroidMultiPartEntity(final HttpMultipartMode mode,
final ProgressListener listener) {
super(mode);
this.listener = listener;
}
public AndroidMultiPartEntity(HttpMultipartMode mode, final String boundary,
final Charset charset, final ProgressListener listener) {
super(mode, boundary, charset);
this.listener = listener;
}
@Override
public void writeTo(final OutputStream outstream) throws IOException {
super.writeTo(new CountingOutputStream(outstream, this.listener));
}
public static interface ProgressListener {
void transferred(long num);
}
public static class CountingOutputStream extends FilterOutputStream {
private final ProgressListener listener;
private long transferred;
public CountingOutputStream(final OutputStream out,
final ProgressListener listener) {
super(out);
this.listener = listener;
this.transferred = 0;
}
public void write(byte[] b, int off, int len) throws IOException {
out.write(b, off, len);
this.transferred += len;
this.listener.transferred(this.transferred);
}
public void write(int b) throws IOException {
out.write(b);
this.transferred++;
this.listener.transferred(this.transferred);
}
}
}
答案 0 :(得分：3)
There is progressUpdate method in AsyncTask class, which will return you progress of file uploading, here is my code which might help you out.
private final ProgressDialog mDialog;
mDialog = new ProgressDialog(context);
mDialog.setMax(100);
mDialog.setMessage("Uploading " + file.getName());
mDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
mDialog.setProgress(0);
mDialog.setButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// This will cancel the putFile operation
mRequest.abort();
}
});
mDialog.show();
@Override
protected void onProgressUpdate(Long... progress) {
int percent = (int)(100.0*(double)progress[0]/mFileLen + 0.5);
mDialog.setProgress(percent);
}
答案 1 :(得分：1)
使用此代码，对于文件上传
，这对我来说非常有用public class MultipartUtility {
FileUploadListener listener;
private static final int BUFFER_SIZE = 1024;
private static final int TIME_OUT = 3 * 60 * 1000;
private final String boundary;
private static final String LINE_FEED = "\r\n";
private HttpURLConnection httpConn;
private String charset;
private OutputStream outputStream;
private PrintWriter writer;
public int statusCode;
public String mURL;
public interface FileUploadListener {
void onUpdateProgress(int percentage, long kb);
boolean isCanceled();
}
/**
* This constructor initializes a new HTTP POST request with content type
* is set to multipart/form-data
*
* @param requestURL
* @param charset
* @throws IOException
*/
public MultipartUtility(String requestURL, String charset, FileUploadListener listener)
throws IOException {
this.charset = charset;
this.listener = listener;
mURL = requestURL;
// creates a unique boundary based on time stamp
boundary = "" + System.currentTimeMillis() + "";
URL url = new URL(requestURL);
httpConn = null;
if (url.getProtocol().toLowerCase().equals("https")) {
trustAllHosts();
HttpsURLConnection https = (HttpsURLConnection) url.openConnection();
https.setHostnameVerifier(new HostnameVerifier() {
@Override
public boolean verify(String hostname, SSLSession session) {
return true;
}
});
httpConn = https;
} else {
httpConn = (HttpURLConnection) url.openConnection();
}
// httpConn.setConnectTimeout(TIME_OUT);
//httpConn.setReadTimeout(TIME_OUT);
httpConn.setUseCaches(false);
httpConn.setDoOutput(true); // indicates POST method
httpConn.setDoInput(true);
httpConn.setChunkedStreamingMode(BUFFER_SIZE);
httpConn.setRequestMethod("POST");
httpConn.setRequestProperty("Content-Type",
"multipart/form-data; boundary=" + boundary);
httpConn.setRequestProperty("Connection", "Keep-Alive");
outputStream = httpConn.getOutputStream();
writer = new PrintWriter(new OutputStreamWriter(outputStream, charset),
true);
}
private static void trustAllHosts() {
// Create a trust manager that does not validate certificate chains
TrustManager[] trustAllCerts = new TrustManager[]{new X509TrustManager() {
public java.security.cert.X509Certificate[] getAcceptedIssuers() {
return new java.security.cert.X509Certificate[]{};
}
public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
}
public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
}
}};
// Install the all-trusting trust manager
try {
SSLContext sc = SSLContext.getInstance("TLS");
sc.init(null, trustAllCerts, new java.security.SecureRandom());
HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* Adds a form field to the request
*
* @param name field name
* @param value field value
*/
public void addFormField(String name, String value) {
writer.append("--" + boundary).append(LINE_FEED);
writer.append("Content-Disposition: form-data; name=\"" + name + "\"")
.append(LINE_FEED);
writer.append("Content-Type: text/plain; charset=" + charset).append(
LINE_FEED);
writer.append(LINE_FEED);
writer.append(value).append(LINE_FEED);
writer.flush();
}
/**
* Adds a upload file section to the request
*
* @param fieldName name attribute in <input type="file" name="..." />
* @param uploadFile a File to be uploaded
* @throws IOException
*/
private long lastProgressUpdateTime = 0;
public void addFilePart(String fieldName, File uploadFile)
throws IOException {
String fileName = uploadFile.getName();
writer.append("--" + boundary).append(LINE_FEED);
writer.append(
"Content-Disposition: form-data; name=\"" + fieldName
+ "\"; filename=\"" + fileName + "\"")
.append(LINE_FEED);
writer.append(
"Content-Type: "
+ URLConnection.guessContentTypeFromName(fileName))
.append(LINE_FEED);
writer.append("charset=" + charset).append(
LINE_FEED);
writer.append(LINE_FEED);
writer.flush();
outputStream.flush();
byte[] buffer = new byte[BUFFER_SIZE];
try {
final FileInputStream inputStream = new FileInputStream(uploadFile);
long totalRead = 0;
long totalSize = uploadFile.length();
int read;
while ((read = inputStream.read(buffer)) > 0) {
totalRead += read;
int percentage = (int) ((totalRead / (float) totalSize) * 100);
outputStream.write(buffer, 0, read);
long now = System.currentTimeMillis();
if (lastProgressUpdateTime == 0 || lastProgressUpdateTime < now - 100) {
lastProgressUpdateTime = now;
Log.e("", totalRead + " " + " " + percentage);
if (listener != null)
this.listener.onUpdateProgress(percentage, totalRead);
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
outputStream.flush();
}
writer.append(LINE_FEED);
writer.flush();
}
/**
* Adds a header field to the request.
*
* @param name - name of the header field
* @param value - value of the header field
*/
public void addHeaderField(String name, String value) {
writer.append(name + ": " + value).append(LINE_FEED);
writer.flush();
}
/**
* Completes the request and receives response from the server.
*
* @return a list of Strings as response in case the server returned
* status OK, otherwise an exception is thrown.
* @throws IOException
*/
public String Execute() throws IOException {
String responses = "";
writer.append(LINE_FEED).flush();
writer.append("--" + boundary + "--").append(LINE_FEED);
writer.close();
StringBuilder sb = new StringBuilder();
try {
// checks server's status code first
statusCode = httpConn.getResponseCode();
if (Constants.IS_DEBUG) {
Log.v(Constants.TAG, "Url: " + mURL);
Log.e("", "response code :" + statusCode);
}
//responses = ;
sb.append("" + Utility.convertStreamToString(httpConn.getInputStream()) + "\n");
if (statusCode == HttpURLConnection.HTTP_OK) {
httpConn.disconnect();
}
responses = sb.toString();
Log.v(Constants.TAG, " response: " + responses);
return responses;
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
sb = new StringBuilder();
sb.append("" + Utility.convertStreamToString(httpConn.getErrorStream()) + "\n");
responses = sb.toString();
Log.v(Constants.TAG, "Error response: " + responses);
}
return responses;
}
}
并以这种方式打电话
MultipartUtility multipart = new MultipartUtility(API.URL , "UTF-8",
new MultipartUtility.FileUploadListener() {
@Override
public void onUpdateProgress(final int percentage, final long kb) {
Activity.this.runOnUiThread(new Runnable() {
@Override
public void run() {
// your progress code
}});
}
@Override
public boolean isCanceled() {
// Canceled or not
return false;
}
});
multipart.addFormField("zipFileName", mFile.getName());
multipart.addFilePart("file", mFile);
String response = multipart.Execute();