Copying large file from asset folder

[kaushik mv]

Hi,

I have problem in copying file from assets folder to /data/data/
<app_name> folder. I am using the following code to copy the files .
private void CopyAssets() {

AssetManager assetManager = getAssets();
String[] files = null;
try {
files = assetManager.list("");
} catch (IOException e) {
Log.e("tag", e.getMessage());
}
for(int i=0; i<files.length; i++) {
InputStream in = null;
OutputStream out = null;

try {

in = assetManager.open(files[i]);
PackageManager pm = getPackageManager();
String dataDir =
pm.getApplicationInfo(getPackageName(),
0).dataDir;
String S =dataDir+"/";

out = new FileOutputStream(S+ files[i]);

copyFile(in, out);
in.close();
in = null;
out.flush();
out.close();
out = null;
} catch(Exception e) {

Log.e("tag", e.getMessage());
}
}
}
private void copyFile(InputStream in, OutputStream out) throws
IOException {
byte[] buffer = new byte[1024];
int read;
while((read = in.read(buffer)) != -1){
out.write(buffer, 0, read);
}
}

While the above code works for small files, it is not copying large
file(1.2 MB). Please help me to debug this.

thanks in advance,
kaushik.

[Dianne Hackborn]

Prior to Android 2.3, you could not open compressed files that were larger than 1MB.  You will need to store it uncompressed in the .apk.  (You could still have the data compressed yourself, and decompress it when you copy the stream.  This is for example how PNG images are effectively stored.  They are compressed by the PNG format and that data within the .apk is thus not compressed (again)).

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[Tim Mensch]

On 6/23/2011 3:16 PM, Dianne Hackborn wrote:
> Prior to Android 2.3, you could not open compressed files that were
> larger than 1MB. You will need to store it uncompressed in the .apk.
> (You could still have the data compressed yourself, and decompress it
> when you copy the stream. This is for example how PNG images are
> effectively stored. They are compressed by the PNG format and that
> data within the .apk is thus not compressed (again)).

I ran into this myself when I accidentally "compressed" an OGG file in
an APK I was rebuilding, which Android promptly failed to open. I worked
around it by compressing the APK (using 7-zip) in two steps -- once with
compression turned on, and once with compression set to "store."

I was rebuilding the APK because I'm doing some ... creative? ... things
to prevent the Google Licensing Service from being trivially broken.
Anything can be hacked, of course, but it didn't seem worthwhile to even
use the Licensing Service if there's a script out in the wild that
automatically cracks it. :(

I hope that it will at least postpone someone hacking my new game until
it gets some momentum; it will certainly prevent an average user from
simply using the cracking script. We'll see what happens. :)

Tim