out of Memory error in android
I am working in android. I am designing a program to upload a file to the http server.
but whenever i run this program and select a file which is a litt开发者_运维知识库le bit more in size then this will generate following error.
java.lang.OutOfMemoryError
at java.io.ByteArrayOutputStream.expand(ByteArrayOutputStream.java:93)
at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:218)
ERROR/AndroidRuntime(557): at
org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl$DefaultHttpOut
putStream.write(HttpURLConnectionImpl.java:750)
10-15 03:08:32.113: ERROR/AndroidRuntime(557): at
java.io.DataOutputStream.write(DataOutputStream.java:101)
this is my file for upload:-
HttpURLConnection conn = null;
DataOutputStream dos = null;
DataInputStream inStream = null;
String existingFileName = "/mnt/sdcard/kuntal.PNG";
Log.v("File upload",""+Environment.getExternalStorageDirectory().getAbsolutePath());
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1*1024*1024;
String responseFromServer = "";
Log.v(TAG,"url= ");
String urlString = "http://192.168.1.126/MusicApplication/uploadmusic.php?title="+title_by_artist+"&category="+category_of_song+"&filename="+filename+"&price="+price_of_song+"&artist="+HomePageActivity.username;
Log.v(TAG,"url= "+urlString);
try
{
//------------------ CLIENT REQUEST
FileInputStream fileInputStream = new FileInputStream(new File(existingFileName) );
// open a URL connection to the Servlet
URL url = new URL(urlString);
// Open a HTTP connection to the URL
conn = (HttpURLConnection) url.openConnection();
// Allow Inputs
conn.setDoInput(true);
// Allow Outputs
conn.setDoOutput(true);
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("Content-Type", "multipart/form-data;boundary="+boundary);
dos = new DataOutputStream( conn.getOutputStream() );
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\"" + existingFileName + "\"" + lineEnd);
dos.writeBytes(lineEnd);
// create a buffer of maximum size
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
// read file and write it into form...
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0)
{
dos.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
}
// send multipart form data necesssary after file data...
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
// close streams
Log.e("Debug","File is written");
fileInputStream.close();
dos.flush();
dos.close();
Toast.makeText(this, "File Successfully Uploaded", Toast.LENGTH_SHORT).show();
}
catch (MalformedURLException ex)
{
Log.e("Debug", "error: " + ex.getMessage(), ex);
}
catch (IOException ioe)
{
Log.e("Debug", "error: " + ioe.getMessage(), ioe);
}
//------------------ read the SERVER RESPONSE
try {
inStream = new DataInputStream ( conn.getInputStream() );
String str;
while (( str = inStream.readLine()) != null)
{
Log.e("Debug","Server Response "+str);
}
inStream.close();
}
catch (IOException ioex){
Log.e("Debug", "error: " + ioex.getMessage(), ioex);
}
}
**and this is my php file for upload:-**
if(move_uploaded_file($_FILES['uploadedfile']['tmp_name'], $target_path))
{
echo "The file ". basename( $_FILES['uploadedfile']['name']).
" has been uploaded";
chmod ("Songs/".basename( $_FILES['uploadedfile']['name']), 0644);
}
else
{
echo "filename: " . basename( $_FILES['uploadedfile']['name']);
echo "target_path: " .$target_path;
}
please help me what should i do to upload file of a little more big size like as mp3 file. Thank you in advance...
I resolved my problem myself.
This is the changes which are made by me in my java
file:-
buffer = new byte[bufferSize];
bufferSize = Math.min(bytesAvailable, maxBufferSize);
byte byt[]=new byte[bufferSize];
fileInputStream.read(byt);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
dos.write(buffer, 0, bufferSize);
In my problem this following code
is replaced:-
while (bytesRead > 0)
{
dos.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
}
Unfortunately this did not solve the problem for me. However, this post:
Unable to write into DataOutputStream beyond a specific size - OutOfMemoryError
saved the day.
On your HttpConnection
, you should use HttpURLConnection.setFixedLengthStreamingMode
, or HttpURLConnection.setChunkedStreamMode
. Otherwise, nothing will actually be transferred to the server and you will hit the memory limit.
You can use WireShark to actually inspect the traffic between your client and server to confirm this.
Just add android:largeHeap="true" in your manifest file
Ref: largeHeap=true manifest tag not working?
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