Android : Incredible Bug Reading A Network Stream
Aug 11, 2009
First, sorry but my English is bad. I'm developing an app for android. I use a function (see below) for transfer a file on the network. removed some code...
Two situation: -S1: in is get from a socket and out is a locale file -S2: in is the local file and out is get from a socket
Well ! S1 and S2 work on the emulator. But, on a real device, S1 make some problem. The file is mixed :/ ! For example i would to transfer this text: "123456789ABCDEF 123456789ABCDEF 123456789ABCDEF 123456789ABCDEF 123456789ABCDEF 123456789ABCDEF 123456789ABCDEF" But i receive this: "123456789ABCDEF 12345678923456789ABCDEF 123456789ABCDEF 123456789ABCDEF 12345678ABCDEF 123456789ABCDEF 123456789ABCDEF 123456789" (not really a real example) The content received have same size as the source. Look at this: "123456789ABCDEF" is send and "12345678ABCDEF" is received.
How does it is possible ? Someone can help me?
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Aug 13, 2009
I'm running into a strange problem while reading from an Input Stream on the Android platform. I'm not sure if this is an Android specific issue, or something I'm doing wrong in general. The only thing that is Android specific is this call:
Input Stream is = getResources().openRawResource(R.raw.myfile);
This returns an Input Stream for a file from the Android assets. Anyways, here's where I run into the issue:
bytes[] buffer = new bytes[2];
is.read(buffer);
When the read() executes it throws an IOException. The weird thing is that if I do two sequential single byte reads (or any number of single byte reads), there is no exception. Ie, this works:
byte buffer;
buffer = (byte)buffer.read();
buffer = (byte)buffer.read();
Any idea why two sequential single byte reads work but one call to read both at once throws an exception? The Input Stream seems fine... is.available() returns over a million bytes (as it should).
Stack trace shows these lines just before the Input Stream.read():
java.io.IOException
at android.content.res.AssetManager.readAsset(Native Method)
at android.content.res.AssetManager.access$800(AssetManager.java:36)
at android.content.res.AssetManager$AssetInputStream.read(AssetManager.java:542)
Changing the buffer size to a single byte still throws the error. It looks like the exception is only raised when reading into a byte array.
If I truncate the file to 100,000 bytes (file is: 1,917,408 bytes originally) it works fine. Is there a problem with files over a certain size?
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