该应用程序在android中低于4.4.2版本时运行良好。当我在4.4.2版本中运行应用程序时，设备应用程序在从Web服务获取/调用数据时非常慢。
有人面临这种问题吗？如果有解决方案，请帮助我。
以下是我的attachemnt上传代码。
私有类UploadAttachmentTask扩展了AsyncTask {
ProgressDialog dialog;
int result = 0;
@Override
protected void onPostExecute(Boolean res) {
super.onPostExecute(res);
if (!ApplicationData.isOffline())
dialog.dismiss();
updateData(result);
}
@Override
protected void onPreExecute() {
super.onPreExecute();
if (!ApplicationData.isOffline()) {
dialog = new ProgressDialog(EvidenceDetailActivity.this);
dialog.setMessage("Uploading resource...");
dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
dialog.setMax(100);
dialog.setProgress(0);
dialog.setCancelable(false);
dialog.show();
}
}
// posting image audio, video file to server
public int postMediaDataToServer(String evidenceId, File file) {
String fileName = service.createFileNameWithDate(file);
System.gc();
int result = postAttachmentToServer(fileName, file, evidenceId);
return result;
}
@SuppressWarnings("deprecation")
public int postAttachmentToServer(String fileName, File file,
String evidenceId) {
try {
System.gc();
HttpURLConnection conn = null;
DataOutputStream dos = null;
DataInputStream inStream = null;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "----WebKitFormBoundarysNDKBMUFqqvzYWGh";
byte[] buffer;
try {
long fileSize = file.length();
int bufferSize = 1024 * 512;
FileInputStream fileInputStream = new FileInputStream(file);
URL url = new URL(CacheAPI.mediaURL());
conn = (HttpURLConnection) url.openConnection();
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setUseCaches(false);
conn.setRequestMethod("POST");
//conn.setChunkedStreamingMode(bufferSize);
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("Accept", "application/json");
conn.setRequestProperty("Accept-Charset", "utf-8");
conn.setRequestProperty("X-Ecordia-Software", "ecordiApp");
List<Cookie> cookies = ApplicationData.getCookieStore()
.getCookies();
if (cookies.size() > 0)
conn.setRequestProperty("Cookie", cookies.get(0)
.getName() + "=" + cookies.get(0).getValue());
conn.setRequestProperty("Content-Type",
"multipart/form-data; boundary=" + boundary);
dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(lineEnd + twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"EvidenceIdentifier\""
+ lineEnd + lineEnd);
dos.writeBytes(evidenceId + lineEnd);
dos.writeBytes(lineEnd + twoHyphens + boundary + lineEnd);
if (fileName.endsWith(".jpg")) {
dos.writeBytes("Content-Disposition: form-data; name=\"File0\"; filename=\""
+ fileName + "\"" + lineEnd);
dos.writeBytes("Content-Type: image/jpeg" + lineEnd
+ lineEnd);
} else if (fileName.endsWith(".mp4")) {
dos.writeBytes("Content-Disposition: form-data; name=\"File0\"; filename=\""
+ fileName + "\"" + lineEnd);
dos.writeBytes("Content-Type: video/mp4" + lineEnd
+ lineEnd);
} else if (fileName.endsWith(".3gp")) {
dos.writeBytes("Content-Disposition: form-data; name=\"File0\"; filename=\""
+ fileName + "\"" + lineEnd);
dos.writeBytes("Content-Type: video/3gp" + lineEnd
+ lineEnd);
} else if (fileName.endsWith(".mov")) {
dos.writeBytes("Content-Disposition: form-data; name=\"File0\"; filename=\""
+ fileName + "\"" + lineEnd);
dos.writeBytes("Content-Type: video/quicktime"
+ lineEnd + lineEnd);
} else if (fileName.endsWith(".wav")) {
dos.writeBytes("Content-Disposition: form-data; name=\"File0\"; filename=\""
+ fileName + "\"" + lineEnd);
dos.writeBytes("Content-Type: audio/wav" + lineEnd
+ lineEnd);
}
buffer = new byte[bufferSize];
int bytesRead = 0;
long count = 0;
while ((bytesRead = fileInputStream.read(buffer)) != -1) {
dos.write(buffer, 0, bytesRead);
count = count + bufferSize;
publishProgress((int) ((count * 100) / fileSize));
}
dos.writeBytes(lineEnd + twoHyphens + boundary + twoHyphens
+ lineEnd);
fileInputStream.close();
dos.flush();
dos.close();
} catch (Exception e) {
e.printStackTrace();
LogService.appendLog(Log.getStackTraceString(e));
}
try {
inStream = new DataInputStream(conn.getInputStream());
@SuppressWarnings("unused")
String str;
while ((str = inStream.readLine()) != null) {
}
inStream.close();
conn.disconnect();
return 0;
} catch (Exception ioex) {
LogService.appendLog(Log.getStackTraceString(ioex));
return 2;
}
} catch (Exception e) {
LogService.appendLog(Log.getStackTraceString(e));
return 2;
} catch (OutOfMemoryError e) {
LogService.appendLog(Log.getStackTraceString(e));
return 1;
}
}
@Override
protected void onProgressUpdate(Integer... values) {
dialog.setProgress(values[0]);
}
@Override
protected Boolean doInBackground(File... params) {
try {
Thread.sleep(2000);
} catch (Exception e) {
e.printStackTrace();
}
if (!ApplicationData.isOffline()) {
try {
result = postMediaDataToServer(
mCurrentEvidence.getEvidenceIdentifier(), params[0]);
} catch (Exception e) {
e.printStackTrace();
}
} else if (isOfflineEvidence) {
List<OfflineEvidence> offlineEvidences;
if (ApplicationData.isAssessor()) {
offlineEvidences = LoginActivity.assessorOfflineEvidenceDataSource
.getAllOfflineEvidences(
ApplicationData.getCandidateName(),
ApplicationData.getApiPortfolioId());
} else {
offlineEvidences = offlineDataSource
.getAllOfflineEvidences(ApplicationData
.getApiPortfolioId());
}
if (evidenceDate != null) {
for (OfflineEvidence offlineEvidence : offlineEvidences) {
if (offlineEvidence.getDate().equals(evidenceDate)) {
service.storeMediaToDataBase(offlineEvidence,
params[0]);
}
}
}
}
return true;
}
}