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Android HttpEntityUtils OutOfMemoryException

I am working on a project that connects to a web server and receives binary data. My problem is that I am downloading data from a web server. If I send a request to log in or to activate some settings, there are no problems. But when I send a request to download binary data, it throws me an OutOfMemoryException . Here is the code I'm using:

 public byte[] activateColl(int index) { createCancelProgressDialog("","Communcating with you...","Cancel"); byte[] buffer = new byte[1024]; try { httpclient = new DefaultHttpClient(); httppost = new HttpPost("http://www.rpc.frbr.com"); TelephonyManager tm = (TelephonyManager) getSystemService(TELEPHONY_SERVICE); String deviceId = tm.getDeviceId(); Log.w("device_identificator","device_identificator : "+deviceId); String resolution = Integer.toString(getWindow().getWindowManager().getDefaultDisplay().getWidth())+ "x" + Integer.toString(getWindow().getWindowManager().getDefaultDisplay().getHeight()); Log.w("device_resolution","device_resolution : "+resolution); String version = "Android " + Build.VERSION.RELEASE; Log.w("device_os_type","device_os_type : "+version); Log.w("device_identification_string","device_identification_string : "+version); String locale = getResources().getConfiguration().locale.toString(); Log.w("set_locale","set_locale : "+locale); String clientApiVersion = null; PackageManager pm = this.getPackageManager(); PackageInfo packageInfo = pm.getPackageInfo(this.getPackageName(), 0); clientApiVersion = packageInfo.versionName; Log.w("client_api_ver","client_api_ver : "+clientApiVersion); hash = getAuthHash(); TelephonyManager tMgr =(TelephonyManager)this.getSystemService(Context.TELEPHONY_SERVICE); phoneNumber = tMgr.getLine1Number(); Log.i("Phone","Phone Number : "+phoneNumber); Log.w("INDEX","INDEXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX : "+Integer.toString(index)); String timestampSQL = "SELECT dbTimestamp FROM users"; Cursor cursor = systemDbHelper.executeSQLQuery(timestampSQL); if(cursor.getCount()==0){ Log.i("Cursor","TimeStamp Cursor Empty!"); } else if(cursor.getCount()>0){ cursor.moveToFirst(); timeStamp = cursor.getString(cursor.getColumnIndex("dbTimestamp")); } postParameters = new ArrayList<NameValuePair>(); postParameters.add(new BasicNameValuePair("debug_data","1")); postParameters.add(new BasicNameValuePair("client_auth_hash", hash)); postParameters.add(new BasicNameValuePair("timestamp", timeStamp)); postParameters.add(new BasicNameValuePair("mobile_phone", phoneNumber)); postParameters.add(new BasicNameValuePair("activate_collections",Integer.toString(index))); postParameters.add(new BasicNameValuePair("device_identificator", deviceId)); postParameters.add(new BasicNameValuePair("device_resolution", resolution)); httppost.setEntity(new UrlEncodedFormEntity(postParameters)); HttpResponse response = httpclient.execute(httppost); Log.w("Response ","Status line : "+ response.getStatusLine().toString()); buffer = EntityUtils.toByteArray(response.getEntity()); } catch (ParseException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } catch (NameNotFoundException e) { e.printStackTrace(); } return buffer; }

LogCat Error:

 10-17 17:53:00.198: ERROR/AndroidRuntime(15486): java.lang.OutOfMemoryError 10-17 17:53:00.198: ERROR/AndroidRuntime(15486): at org.apache.http.util.ByteArrayBuffer.expand(ByteArrayBuffer.java:57) 10-17 17:53:00.198: ERROR/AndroidRuntime(15486): at org.apache.http.util.ByteArrayBuffer.append(ByteArrayBuffer.java:75) 10-17 17:53:00.198: ERROR/AndroidRuntime(15486): at org.apache.http.util.EntityUtils.toByteArray(EntityUtils.java:80) 10-17 17:53:00.198: ERROR/AndroidRuntime(15486): at com.stampii.stampii.synchronization.Synchronization.deactivateColl(Synchronization.java:843) 10-17 17:53:00.198: ERROR/AndroidRuntime(15486): at com.stampii.stampii.synchronization.Synchronization.onCreate(Synchronization.java:116) 10-17 17:53:00.198: ERROR/AndroidRuntime(15486): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1069) 10-17 17:53:00.198: ERROR/AndroidRuntime(15486): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2751) 10-17 17:53:00.198: ERROR/AndroidRuntime(15486): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2803) 10-17 17:53:00.198: ERROR/AndroidRuntime(15486): at android.app.ActivityThread.access$2300(ActivityThread.java:135) 10-17 17:53:00.198: ERROR/AndroidRuntime(15486): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2136) 10-17 17:53:00.198: ERROR/AndroidRuntime(15486): at android.os.Handler.dispatchMessage(Handler.java:99) 10-17 17:53:00.198: ERROR/AndroidRuntime(15486): at android.os.Looper.loop(Looper.java:144) 10-17 17:53:00.198: ERROR/AndroidRuntime(15486): at android.app.ActivityThread.main(ActivityThread.java:4937) 10-17 17:53:00.198: ERROR/AndroidRuntime(15486): at java.lang.reflect.Method.invokeNative(Native Method) 10-17 17:53:00.198: ERROR/AndroidRuntime(15486): at java.lang.reflect.Method.invoke(Method.java:521) 10-17 17:53:00.198: ERROR/AndroidRuntime(15486): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 10-17 17:53:00.198: ERROR/AndroidRuntime(15486): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 10-17 17:53:00.198: ERROR/AndroidRuntime(15486): at dalvik.system.NativeStart.main(Native Method)

Any ideas how to fix this? I tried to increase the buffer size to 50 * 1024, but still does not help.

EDIT: Error in this line:

 buffer = EntityUtils.toByteArray(response.getEntity());
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2 answers

On Android, you have a limited heap size that runs out when you try to decode your object. I think you need to use http chunking to send your data to the client (or something went wrong, and EntityUtils thinks they need a much larger array. The problem is that the byte array should be large rather than small. Messages :

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Ok, try this.

 HttpResponse response = httpclient.execute(httppost); // get response entity HttpEntity entity = response.getEntity(); // convert entity response to string if (entity != null) { InputStream is = entity.getContent(); // convert stream to string result = convertStreamToString(is); result = result.replace("\n", ""); }

And for conversion of InputStream to String

 public String convertStreamToString(InputStream inputStream) { BufferedReader r = new BufferedReader(new InputStreamReader(inputStream)); StringBuilder total = new StringBuilder(); String line; while ((line = r.readLine()) != null) { total.append(line); } return total.toString(); }

or

use the Apache Commons library (org.apache.commons.io.IOUtils).

  String total = IOUtils.toString(inputStream);

or just write to temp file,

  HttpEntity.writeTo(OutputStream);

Well, as a user, Philip Reichart suggested from the package org.apache.http.util ;

 EntityUtils.toString();

is a method that allows encoding format with String Conversion .

and let me know that you got OutOfMemory Error .

Thanks.

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