jsonデータのアップロード中に進行状況バーのステータスをパーセンテージで表示する方法は？
文字列と写真をアップロードしています。パーセンテージでデータをアップロードしているときにプログレスバーを表示したいのですが、パーセンテージは100パーセントまで非常に速く表示され、アップロードに少し時間がかかり、最後に実行後メソッドに到達します。
protected class upload_images extends AsyncTask<String, Integer, String> {
ProgressDialog progressDialog;
@Override
protected void onPreExecute() {
super.onPreExecute();
// showDialog(progress_bar_type);
progressDialog = new ProgressDialog(Accept_Report.this);
progressDialog.setCancelable(false);
// dialog.setCanceledOnTouchOutside(false);
progressDialog.setIndeterminate(false);
// progressDialog.setMax(100);
progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
// progressDialog.setProgress(0);
progressDialog.setMax(100);
// progressDialog.setMessage("Loading ...");
progressDialog.show();
// ProgressBar progressBar = (ProgressBar)findViewById(R.id.progressBar2);
}
@Override
protected String doInBackground(String... params) {
URL url;
HttpURLConnection connection = null;
String http=Util.URL+"reports/media/create";
try {
url = new URL(http);
connection = (HttpURLConnection) url.openConnection();
connection.setDoInput(true);
connection.setRequestMethod("POST");
/* connection.setConnectTimeout(50000);
connection.setReadTimeout(50000);*/
connection.setRequestProperty("Content-Type", "application/json");
connection.setRequestProperty("Content-Language", "en-US");
String encoded = Base64.encodeToString(("app" + ":" + "sFif4au7wet8gpsT0boK1oM2Yud6M1").getBytes("UTF-8"), Base64.NO_WRAP);
connection.setRequestProperty("Authorization", "Basic " + encoded);
connection.setUseCaches(false);
connection.setDoOutput(true);
connection.connect();
jsonArray = new JSONArray();
right = send_right.toString().replaceAll("\\[", "").replaceAll("\\]", "");
if((right!=null)&&(right!="")) {
JSONObject pnObj = new JSONObject();
pnObj.put("comments", right_cm);
pnObj.put("section", right_sec);
pnObj.put("pictures", right);
jsonArray.put(pnObj);
}
// return totalSize;
JSONObject jsonParam = new JSONObject();
jsonParam.put("media", jsonArray);
//Send request
int count = 0;
OutputStream wr = connection.getOutputStream();
InputStream inputStream = null;
byte[] payload = jsonParam.toString().getBytes("UTF-8");
int totalSze = payload.length;
Log.e("Total size ", "" + totalSze);
int bytesTransferred = 0;
int chunkSize = (2*totalSze)/100;
boolean last_loop = false;
// publishProgress(0);
while (bytesTransferred < totalSze) {
Log.e("bytes transferred", "" + bytesTransferred);
int nextChunkSize = totalSze - bytesTransferred;
Log.e("nextchunck",""+nextChunkSize);
//int writer_size = wr.toString().getBytes("UTF-8").length;
Log.e("chunk size", "" + chunkSize);
if (nextChunkSize > chunkSize) {
nextChunkSize = chunkSize;
}
wr.write(payload, bytesTransferred, nextChunkSize);
bytesTransferred += nextChunkSize;
Log.e("byte",""+wr.toString().getBytes("UTF-8").length);
Log.e("progress-transferred", "" + bytesTransferred +" total "+totalSze);
double cal = (( (double)bytesTransferred / (double) totalSze) * 100);
double rounded = (double) Math.round(cal * 100.0) / 100.0;
Log.e("progress",""+(int)rounded);
publishProgress((int)rounded);
wr.flush();
wr.close();
}catch(Exception e){
Log.d("Exception", e.toString());
}
}*/
Log.e("While loop exit", "");
/* wr.flush ();
wr.close();*/
}catch (OutOfMemoryError e)
{
e.printStackTrace();
}
//Get Response
StringBuilder sb = new StringBuilder();
HttpResultimage =connection.getResponseCode();
Log.e("res",""+HttpResultimage);
if(HttpResultimage==204)
{
BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream(),"utf-8"));
String line = null;
while ((line = br.readLine()) != null) {
sb.append(line + "\n");
}
br.close();
System.out.println("" + sb.toString());
}else{
}
} catch (Exception e) {
e.printStackTrace();
return null;
} finally {
if(connection != null) {
connection.disconnect();
}
}
return null;
}
@Override
protected void onProgressUpdate(Integer... values){
super.onProgressUpdate(values);
// Log.e("dfsf",""+values[0]);
progressDialog.setProgress(values[0]);
// progressDialog.setProgress(values[0]);
}
@Override
protected void onPostExecute(String result) {
if (HttpResultimage==204) {
progressDialog.dismiss();
}
}
}
これを見てください Gist 、そこには完全に機能する例があります
まず、魔女がプログレスバーを更新するインターフェースを持つカスタムRequestBodyを作成する必要があります。
import com.squareup.okhttp.MediaType;
import com.squareup.okhttp.RequestBody;
import com.squareup.okhttp.internal.Util;
import Java.io.File;
import Java.io.IOException;
import okio.BufferedSink;
import okio.Okio;
import okio.Source;
public class ProgressRequestBody extends RequestBody {
private static final int SEGMENT_SIZE = 2048; // okio.Segment.SIZE
private final File file;
private final ProgressListener listener;
private final String contentType;
public ProgressRequestBody(File file, String contentType, ProgressListener listener) {
this.file = file;
this.contentType = contentType;
this.listener = listener;
}
@Override
public long contentLength() {
return file.length();
}
@Override
public MediaType contentType() {
return MediaType.parse(contentType);
}
@Override
public void writeTo(BufferedSink sink) throws IOException {
Source source = null;
try {
source = Okio.source(file);
long total = 0;
long read;
while ((read = source.read(sink.buffer(), SEGMENT_SIZE)) != -1) {
total += read;
sink.flush();
this.listener.transferred(total);
}
} finally {
Util.closeQuietly(source);
}
}
public interface ProgressListener {
void transferred(long num);
}
}
このクラスをそのままコピーできます
次に、アクティビティまたはフラグメントで、ProgressRequestBodyクラスからProgressListenerを実装し、次のメソッドを呼び出します
public void uploadWithProgrss(File file) {
RequestBody requestBody = new MultipartBuilder()
//build multipart request
.type(MultipartBuilder.FORM)
//name= KEY for your param
//filename = VALUE of the param - in our case filename
//attach the custom ProgressRequestBody in form of (File file, String type, Interface ProgressRequestBody.ProgressListener)
//Set type depending on your content type if video set it to "video/mp4" or "image/jpeg" if image
.addPart(Headers.of("Content-Disposition", "form-data; name=\"digital_product[attachment]\"; filename=\"" + file.getName() + "\""),
new ProgressRequestBody(file, type2, this))
//attach the rest of Request body parameters if any
.addPart(
Headers.of("Content-Disposition", "form-data; name=\"digital_product[price]\""),
RequestBody.create(MediaType.parse("text/plain"), etPrice.getText().toString()))
.addPart(
Headers.of("Content-Disposition", "form-data; name=\"digital_product[title]\""),
RequestBody.create(MediaType.parse("text/plain"), etCaption.getText().toString()))
.addPart(
Headers.of("Content-Disposition", "form-data; name=\"digital_product[description]\""),
RequestBody.create(MediaType.parse("text/plain"), etCaption.getText().toString()))
.build();
//Build your request
Request request = new Request.Builder()
//your url
.url(BuildConfig.API_URL + "api/v1/users/me/digital_products")
//request header if any
.addHeader("Authorization", "Bearer " + app.getAccessToken())
//type of the request, i this case post request with request body
.post(requestBody)
.build();
client.setReadTimeout(1, TimeUnit.MINUTES);
client.setConnectTimeout(1, TimeUnit.MINUTES);
client.setWriteTimeout(1, TimeUnit.MINUTES);
final Call call = client.newCall(request);
call.enqueue(new com.squareup.okhttp.Callback() {
@Override
public void onFailure(Request request, IOException e) {
}
@Override
public void onResponse(com.squareup.okhttp.Response response) throws IOException {
if (response.isSuccessful()) {
//Handle success
} else {
call.cancel();
//handle error
}
}
});
}
@Override
public void transferred(final long num) {
//progress bar had to be updated from the UI thread
new Handler(activity.getMainLooper()).post(new Runnable() {
@Override
public void run() {
//just chacking if fragment is added
if (isAdded()) {
//Updating progress bar
progressBar.setProgress((int) ((num / (float) file.length()) * 100));
}
}
});
}
このチュートリアルをご覧ください- http://www.androidhive.info/2014/12/Android-uploading-camera-image-video-to-server-with-progress-bar/
private class UploadFileToServer extends AsyncTask<Void, Integer, String> {
@Override
protected void onPreExecute() {
// setting progress bar to zero
progressBar.setProgress(0);
super.onPreExecute();
}
@Override
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;
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(Config.FILE_UPLOAD_URL);
try {
AndroidMultiPartEntity entity = new AndroidMultiPartEntity(
new ProgressListener() {
@Override
public void transferred(long num) {
publishProgress((int) ((num / (float) totalSize) * 100));
}
});
File sourceFile = new File(filePath);
// Adding file data to http body
entity.addPart("image", new FileBody(sourceFile));
// Extra parameters if you want to pass to server
entity.addPart("website",
new StringBody("www.androidhive.info"));
entity.addPart("email", new StringBody("[email protected]"));
totalSize = entity.getContentLength();
httppost.setEntity(entity);
// Making server call
HttpResponse response = httpclient.execute(httppost);
HttpEntity r_entity = response.getEntity();
int statusCode = response.getStatusLine().getStatusCode();
if (statusCode == 200) {
// Server response
responseString = EntityUtils.toString(r_entity);
} else {
responseString = "Error occurred! Http Status Code: "
+ statusCode;
}
} catch (ClientProtocolException e) {
responseString = e.toString();
} catch (IOException e) {
responseString = e.toString();
}
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);
}
}
http://samir-mangroliya.blogspot.in/p/Android-asynctask-example.html
上記のリンクを開いてください。最善の答えが見つかります。
protected class upload_images extends AsyncTask<String, Integer, String> {
ProgressDialog progressDialog;
@Override
protected void onPreExecute() {
super.onPreExecute();
// showDialog(progress_bar_type);
progressDialog = new ProgressDialog(Accept_Report.this);
progressDialog.setCancelable(false);
// dialog.setCanceledOnTouchOutside(false);
progressDialog.setIndeterminate(false);
// progressDialog.setMax(100);
progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
// progressDialog.setProgress(0);
progressDialog.setMax(100);
// progressDialog.setMessage("Loading ...");
progressDialog.show();
// ProgressBar progressBar = (ProgressBar)findViewById(R.id.progressBar2);
}
@Override
protected String doInBackground(String... params) {
URL url;
HttpURLConnection connection = null;
String http = Util.URL + "reports/media/create";
try {
url = new URL(http);
connection = (HttpURLConnection) url.openConnection();
.
.
.
connection.connect();
...
// you are doing this
// what is jsonParam ?
//byte[] payload = jsonParam.toString().getBytes("UTF-8");
// how you gonna get content lenght from it?
int count = 0;
OutputStream wr = connection.getOutputStream();
InputStream inputStream = null;
byte[] payload = jsonParam.toString().getBytes("UTF-8");
int totalSze = payload.length;
Log.e("Total size ", "" + totalSze);
int bytesTransferred = 0;
int chunkSize = (2 * totalSze) / 100;
boolean last_loop = false;
// publishProgress(0);
...
// Do like this example
// getting file length
int lenghtOfFile = connection.getContentLength();
// input stream to read file - with 8k buffer
InputStream input = new BufferedInputStream(url.openStream(), 8192);
// Output stream to write file
OutputStream output = new FileOutputStream("/sdcard/downloadedfile.jpg");
byte data[] = new byte[1024];
long total = 0;
while ((count = input.read(data)) != -1) {
total += count;
// publishing the progress....
// After this onProgressUpdate will be called
publishProgress((int) ((total * 100) / lenghtOfFile));
// writing data to file
output.write(data, 0, count);
}
} catch (Exception e) {
}
return null;
}
@Override
protected void onProgressUpdate(Integer... values) {
super.onProgressUpdate(values);
// Log.e("dfsf",""+values[0]);
progressDialog.setProgress(values[0]);
// progressDialog.setProgress(values[0]);
}
@Override
protected void onPostExecute(String result) {
if (HttpResultimage == 204) {
progressDialog.dismiss();
}
}
}
進行状況を更新する前に、whileループ内をフラッシュしてください。
while (bytesTransferred < totalSze) {
...
wr.flush();
publishProgress((int)rounded);
...
}