我是从设备到PHP服务器的文件转换成字节数组上载的图像文件。我使用的是Android的异步HTTP-1.3.1.jar我的应用程序文件上传到服务器。
I'm uploading image files from device to a PHP server by converting the file into byte array. I'm uploading files to server using android-async-http-1.3.1.jar in my app.
http://loopj.com/android-async-http/
我要的是要显示在进度条怎么字节数组的多字节已上载。现在的问题是,我怎样才能知道有多少字节已经上传而上传的进度。需要在这个问题上的想法/例子/ codeS帮助。在此先感谢你们。
What i want is to show on a progress bar how much bytes of the byte array has been uploaded. Now , the problem is , how can i get to know how much bytes has been uploaded while a uploading is on progress. Need help on the issue with ideas / example / codes. Thanks in advance guys.
最后,我已经做到了。我已经做到了这一点使用文件输入/输出流的AsyncTask类中。下面,我已经给了code上传文件和放大器;显示,在进度条......
Finally , i have done it. I have done this using file-input/output-stream inside AsyncTask class. Below, i have given the code for uploading file & showing that in progress bar ......
class ImageUploadTask extends AsyncTask<Void, Void, String> {
@Override
protected void onPreExecute() {
pb.setVisibility(View.VISIBLE);
}
@Override
protected String doInBackground(Void... unused) {
String twoHyphens = "--";
String boundary = "*****" + Long.toString(System.currentTimeMillis()) + "*****";
String lineEnd = "\r\n";
try
{
FileInputStream fileInputStream = new FileInputStream(new File(pathToOurFile));
URL url = new URL(urlServer);
connection = (HttpURLConnection) url.openConnection();
// Allow Inputs & Outputs
connection.setDoInput(true);
connection.setDoOutput(true);
connection.setUseCaches(false);
// Enable POST method
connection.setRequestMethod("POST");
connection.setRequestProperty("Connection", "Keep-Alive");
connection.setRequestProperty("Content-Type", "multipart/form-data;boundary="+boundary);
outputStream = new DataOutputStream( connection.getOutputStream() );
outputStream.writeBytes(twoHyphens + boundary + lineEnd);
outputStream.writeBytes("Content-Disposition: form-data; name=\"image\";filename=\"" + pathToOurFile +"\"" + lineEnd);
outputStream.writeBytes(lineEnd);
bytesAvailable = fileInputStream.available();
Log.v("Size",bytesAvailable+"");
pb.setProgress(0);
pb.setMax(bytesAvailable);
//Log.v("Max",pb.getMax()+"");
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
// Read file
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0)
{
outputStream.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
Log.v("Available",bytesAvailable+"");
publishProgress();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
}
outputStream.writeBytes(lineEnd);
outputStream.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
// Responses from the server (code and message)
serverResponseCode = connection.getResponseCode();
serverResponseMessage = connection.getResponseMessage();
System.out.println(serverResponseMessage);
fileInputStream.close();
outputStream.flush();
outputStream.close();
}
catch (Exception ex)
{
//Exception handling
}
//publishProgress();
return null;
}
@Override
protected void onProgressUpdate(Void... unsued) {
super.onProgressUpdate(unsued);
pb.setProgress(pb.getMax()-bytesAvailable);
}
@Override
protected void onPostExecute(String sResponse) {
//if(pb.getProgress()>= pb.getMax())
pb.setVisibility(View.INVISIBLE);
}
}
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