Android: OutOfMemoryError while uploading video - how best to chunk?
<p>I have the same problem <a href="http://stackoverflow.com/questions/1686446/upload-videos-in-android">as described here</a>, but I will supply a few more details. While trying to upload a video in Android, I'm reading it into memory, and if the video is large I get an OutOfMemoryError.</p>

<p>Here's my code:</p>

<pre><code>// get bytestream to upload
videoByteArray = getBytesFromFile(cR, fileUriString);

public static byte[] getBytesFromFile(ContentResolver cR, String fileUriString) throws IOException {
    Uri tempuri = Uri.parse(fileUriString);
    InputStream is = cR.openInputStream(tempuri);
    byte[] b3 = readBytes(is);
    is.close();
    return b3;
}
public static byte[] readBytes(InputStream inputStream) throws IOException {
    ByteArrayOutputStream byteBuffer = new ByteArrayOutputStream();
    // this is storage overwritten on each iteration with bytes
    int bufferSize = 1024;
    byte[] buffer = new byte[bufferSize];
    int len = 0;
    while ((len = inputStream.read(buffer)) != -1) {
        byteBuffer.write(buffer, 0, len);
    }
    return byteBuffer.toByteArray();
}
</code></pre>

<p>And here's the traceback (the error is thrown on the <code>byteBuffer.write(buffer, 0, len)</code> line):  </p>

<pre><code>04-08 11:56:20.456: ERROR/dalvikvm-heap(6088): Out of memory on a 16775184-byte allocation.
04-08 11:56:20.456: INFO/dalvikvm(6088): "IntentService[UploadService]" prio=5 tid=17 RUNNABLE
04-08 11:56:20.456: INFO/dalvikvm(6088):   | group="main" sCount=0 dsCount=0 s=N obj=0x449a3cf0 self=0x38d410
04-08 11:56:20.456: INFO/dalvikvm(6088):   | sysTid=6119 nice=0 sched=0/0 cgrp=default handle=4010416
04-08 11:56:20.456: INFO/dalvikvm(6088):   at java.io.ByteArrayOutputStream.expand(ByteArrayOutputStream.java:~93)
04-08 11:56:20.456: INFO/dalvikvm(6088):   at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:218)
04-08 11:56:20.456: INFO/dalvikvm(6088):   at com.android.election2010.UploadService.readBytes(UploadService.java:199)
04-08 11:56:20.456: INFO/dalvikvm(6088):   at com.android.election2010.UploadService.getBytesFromFile(UploadService.java:182)
04-08 11:56:20.456: INFO/dalvikvm(6088):   at com.android.election2010.UploadService.doUploadinBackground(UploadService.java:118)
04-08 11:56:20.456: INFO/dalvikvm(6088):   at com.android.election2010.UploadService.onHandleIntent(UploadService.java:85)
04-08 11:56:20.456: INFO/dalvikvm(6088):   at android.app.IntentService$ServiceHandler.handleMessage(IntentService.java:30)
04-08 11:56:20.456: INFO/dalvikvm(6088):   at android.os.Handler.dispatchMessage(Handler.java:99)
04-08 11:56:20.456: INFO/dalvikvm(6088):   at android.os.Looper.loop(Looper.java:123)
04-08 11:56:20.456: INFO/dalvikvm(6088):   at android.os.HandlerThread.run(HandlerThread.java:60)
04-08 11:56:20.467: WARN/dalvikvm(6088): threadid=17: thread exiting with uncaught exception (group=0x4001b180)
04-08 11:56:20.467: ERROR/AndroidRuntime(6088): Uncaught handler: thread IntentService[UploadService] exiting due to uncaught exception
04-08 11:56:20.467: ERROR/AndroidRuntime(6088): java.lang.OutOfMemoryError
04-08 11:56:20.467: ERROR/AndroidRuntime(6088):     at java.io.ByteArrayOutputStream.expand(ByteArrayOutputStream.java:93)
04-08 11:56:20.467: ERROR/AndroidRuntime(6088):     at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:218)
04-08 11:56:20.467: ERROR/AndroidRuntime(6088):     at com.android.election2010.UploadService.readBytes(UploadService.java:199)
04-08 11:56:20.467: ERROR/AndroidRuntime(6088):     at com.android.election2010.UploadService.getBytesFromFile(UploadService.java:182)
04-08 11:56:20.467: ERROR/AndroidRuntime(6088):     at com.android.election2010.UploadService.doUploadinBackground(UploadService.java:118)
04-08 11:56:20.467: ERROR/AndroidRuntime(6088):     at com.android.election2010.UploadService.onHandleIntent(UploadService.java:85)
04-08 11:56:20.467: ERROR/AndroidRuntime(6088):     at android.app.IntentService$ServiceHandler.handleMessage(IntentService.java:30)
04-08 11:56:20.467: ERROR/AndroidRuntime(6088):     at android.os.Handler.dispatchMessage(Handler.java:99)
04-08 11:56:20.467: ERROR/AndroidRuntime(6088):     at android.os.Looper.loop(Looper.java:123)
04-08 11:56:20.467: ERROR/AndroidRuntime(6088):     at android.os.HandlerThread.run(HandlerThread.java:60)
04-08 11:56:20.496: INFO/Process(4657): Sending signal. PID: 6088 SIG: 3
</code></pre>

<p>I guess that <a href="http://stackoverflow.com/questions/1686446/upload-videos-in-android">as @DroidIn suggests</a>, I need to upload it in chunks. But (newbie question alert) does that mean that I should make multiple PostMethod requests, and glue the file together at the server end? Or can I load the bytestream into memory in chunks, and glue it together in the Android code?</p>

<p>If anyone could give me a clue as to the best approach, I would be very grateful. </p>
