getCacheDir() not working

by DanaH » Mon, 07 Dec 2009 13:54:52 GMT


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 I am attempting to follow a code snipet for saving a file to a cache
directory without success.

try{
    File pathCacheDir = getCacheDir();
    System.out.println("Got the Cache directory");
    File newCacheFile = new File(pathCacheDir, cacheFileName);
    newCacheFile.createNewFile();
    FileOutputStream stream = new FileOutputStream
(newCacheFile.getAbsolutePath());
    tileImage.getBitmap().compress(CompressFormat.PNG, 100, stream);
    stream.flush();
    stream.close();
}catch(Exception e) {
    Log.v(TAG, "Not able to save tile to Cache...");
}

The first debug statement that prints out is in the caught exception,
which tells me that the getCacheDir() call is where the failure
occured. Upon doing further investigation, I found that the /data/data/
<package name>/cache/ file does not exist by examining the file
structure in the DDMS.
Should the cache dir be a pre-existing directory? In any case, I have
since been able to created it explicitly. However, the program is
still failing at the same getCacheDir() call.
Is this likely a bug in the SDK, or am I missing some key information?

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