OutOfMemory exception when converting ByteArray to String?

Question

I use the following code to convert my ByteArray to String:

String sReturn = new String(byteArray, "UTF-8"); 

But I get the following exception when ByteArray is large enough.

Is there any other way to convert ByteArray to String without exception from memory?

 06-17 12:27:37.594: E/dalvikvm(1617): Out of memory: Heap Size=30663KB, Allocated=22087KB, Bitmap Size=936KB, Limit=32768KB 06-17 12:27:37.594: E/dalvikvm(1617): Extra info: Footprint=30663KB, Allowed Footprint=30663KB, Trimmed=616KB 06-17 12:27:37.594: W/dalvikvm(1617): threadid=9: thread exiting with uncaught exception (group=0x4001d648) 06-17 12:27:37.594: E/AndroidRuntime(1617): FATAL EXCEPTION: Thread-19 06-17 12:27:37.594: E/AndroidRuntime(1617): java.lang.OutOfMemoryError: (Heap Size=30663KB, Allocated=22087KB, Bitmap Size=936KB) 06-17 12:27:37.594: E/AndroidRuntime(1617): at java.lang.String.<init>(String.java:422) 06-17 12:27:37.594: E/AndroidRuntime(1617): at java.lang.String.<init>(String.java:276) 06-17 12:27:37.594: E/AndroidRuntime(1617): at org.mabna.order.utils.Utilities.decompress(Utilities.java:389) 06-17 12:27:37.594: E/AndroidRuntime(1617): at org.mabna.order.utils.WebserviceResponse.getClearedResponse(WebserviceResponse.java:18) 06-17 12:27:37.594: E/AndroidRuntime(1617): at org.mabna.order.businessLayer.BoWebService.getDataForUpdate(BoWebService.java:216) 06-17 12:27:37.594: E/AndroidRuntime(1617): at org.mabna.order.ui.ActToolDataExchange.threadGetDataForFullUpdate(ActToolDataExchange.java:389) 06-17 12:27:37.594: E/AndroidRuntime(1617): at org.mabna.order.ui.ActToolDataExchange.access$9(ActToolDataExchange.java:380) 06-17 12:27:37.594: E/AndroidRuntime(1617): at org.mabna.order.ui.ActToolDataExchange$35.run(ActToolDataExchange.java:639) 06-17 12:27:37.594: E/AndroidRuntime(1617): at org.mabna.order.utils.Utilities$4.run(Utilities.java:924) 

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UPDATE

 public static String decompress(String zipText) throws IOException { byte[] compressed = Base64.decode(zipText); if (compressed.length > 4) { GZIPInputStream gzipInputStream = new GZIPInputStream( new ByteArrayInputStream(compressed, 4, compressed.length - 4)); ByteArrayOutputStream baos = new ByteArrayOutputStream(); for (int value = 0; value != -1;) { value = gzipInputStream.read(); if (value != -1) { baos.write(value); } } gzipInputStream.close(); baos.close(); byte[] byteArray = baos.toByteArray(); Log.i("toByteArray", String.valueOf(byteArray.length)); String sReturn = new String(byteArray, "UTF-8"); return sReturn; } else { return ""; } } public static String decrypt(String encrypted, String password) throws Exception { byte[] encrypteddata = Base64.decode(encrypted); byte[] bytes = decrypt(encrypteddata, password); String result = new String(bytes, "UTF-8"); return result; } public static byte[] decrypt(byte[] encrypted, String password) throws Exception { byte[] passwordKey = encodeDigest(password); try { aesCipher = Cipher.getInstance(CIPHER_TRANSFORMATION); } catch (NoSuchAlgorithmException e) { throw new Exception( "Decryption Exception: No such algorithm\r\n" + e .toString()); } catch (NoSuchPaddingException e) { throw new Exception( "Decryption Exception: No such padding PKCS5\r\n" + e .toString()); } secretKey = new SecretKeySpec(passwordKey, CIPHER_ALGORITHM); try { aesCipher.init(Cipher.DECRYPT_MODE, secretKey, ivParameterSpec); } catch (InvalidKeyException e) { throw new Exception( "Decryption Exception: Invalid key\r\n" + e.toString()); } catch (InvalidAlgorithmParameterException e) { throw new Exception( "Decryption Exception: Invalid algorithm\r\n" + e .toString()); } byte[] encryptedData; try { encryptedData = aesCipher.doFinal(encrypted); } catch (IllegalBlockSizeException e) { throw new Exception( "Decryption Exception: Illegal block size\r\n" + e .toString()); } catch (BadPaddingException e) { throw new Exception( "Decryption Exception: Bad padding\r\n" + e .toString()); } return encryptedData; } 

Answer 1

The following snippet will help you. Try to read the pieces

  StringBuilder sb=new StringBuilder(); Log.v("abc","length : " + byteArray.length); while (totalBytesRead < formDataLength) { byteRead = in.read(dataBytes, totalBytesRead, formDataLength); // byteRead = in.read(dataBytes); //totalBytesRead += byteRead; sb.append((char)byteRead); } String s=sb.toString(); 

Answer 2

I would break it like 1000 char strings at a time. 3663125 bytes is a large part of the memory, especially for Android.

 ArrayList<String> strings = new ArrayList<String>(); byte[] set = new byte[1000]; for(int x = 0, index = 0; x < byteArray.length;x++, index++) { set[index] = byteArray[x]; if(index == 999) { strings.add(new String(set, "Unicode")); index = 0; if(byteArray.length - x < 1000) // shorten the set when there are less than 1000 bytes left set = new byte[byteArray.length - x]; } } strings.add(new String(set, "Unicode")); String stringArray[] = (String[])strings.toArray(); 

It will break for you, you can change 1000 to be what you want if it is too small.

Answer 3

You allocate memory excessively - first you unpack base 64 and allocate a buffer for this, then you unpack it and write to chutnks in BAOS (which allocates and redistributes pieces of memory) and you copy it again to a string - no, it does not have enough memory.

Try rewriting this to a streaming process (there is srteaming base64 dcoding as well as a gzip decoder)