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POTrouble in retrieving the JPEG image from inputstream socket in Android
 

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  1. POTrouble in retrieving the JPEG image from inputstream socket in Android
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    <p>I want to retrieve the JPEG image from a inputstream socket in Android. Can I actually use Bitmap method and straight away convert input stream to JPG or should I convert the inputstream to byte array and then convert it to a JPG?</p> <p>The code that I'm actually trying is:</p> <pre><code> private final BluetoothSocket mmBTSocket; private final InputStream mmBTInStream; private final OutputStream mmBTOutStream; public ConnectedThread(BluetoothSocket socket) { Log.d(BTTAG, "create ConnectedThread"); mmBTSocket = socket; InputStream tmpIn = null; OutputStream tmpOut = null; // Get the BluetoothSocket input and output streams try { tmpIn = socket.getInputStream(); tmpOut = socket.getOutputStream(); } catch (IOException e) { Log.e(BTTAG, "temp sockets not created", e); } mmBTInStream = tmpIn; mmBTOutStream = tmpOut; } public void run() { Log.i(BTTAG, "BEGIN mBTConnectedThread"); byte[] inBTBuffer = new byte[1024]; boolean BTFileEndOne = false; byte[] mBTimageBuffer = new byte[15360]; // 15KB reserved int bytes; bytes = mmBTInStream.read(inBTBuffer); for (int i = 0; i &lt; bytes; i++) { mBTimageBuffer[mBTfileIndex] = inBTBuffer[i]; mBTfileIndex++; // start = System.currentTimeMillis(); // Log.i(BTTAG, bytes+"="+String.format("%02X", // inBTBuffer[i])); if (i &gt; 0) { if (inBTBuffer[i] == (byte) 0xD9) { BTFileEndOne = true; Log.i(BTTAG, "BTFileEndOne = true"); if (inBTBuffer[i - 1] == (byte) 0xFF) { //if (SaveImagetoSD() == true) { //byte[] readBuf = (byte[]) msg.obj; Bitmap bitmap = BitmapFactory.decodeStream(mmBTInStream); bitmap.compress(CompressFormat.JPEG, 80, mmBTOutStream); String writeTo = new File(Environment.getExternalStorageDirectory()+ File.separator + "motoduino.jpg") .toString(); FileOutputStream output = null; try { output = new FileOutputStream(writeTo); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); }` </code></pre>
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    1. USuser2964385
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    1. COLooks like from the code what mmBTinStream, is used to send more then one file, so unfortunately BitmapFactory.decodeStream(mmBTinStream) won't work as it needs to see a jpg or png file as it would have been as a file. You will need to save the bytes to file first this way you can also test what it hasn't been corrupted.
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      1. POTrouble in retrieving the JPEG image from inputstream socket in Android
      1. USMartin Sykes
    2. CODo you need to use the transferred picture in your app, or are you only saving it and not using it within your app?
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      1. POTrouble in retrieving the JPEG image from inputstream socket in Android
      1. USMartin Sykes
    3. COActually i will be uploading the transferred image to server. But actually im sending only one file from arduino
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      1. USuser2964385
 

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