[TIMOB-9282] Android: Utils.md5HexDigest() not reading blob

Problem

When reading a locally stored file (in both resources directory and a downloaded file in the app data directory), Ti.Utils.md5HexDigest() should read the blob and return a string, but instead NULL is returned on Android. Works on iOS.

Test case

Add the following snippet to the end of a new mobile project and iOS will return MD5 hex string, android won't.

downloadPath     =     Ti.Filesystem.getFile(Ti.Filesystem.resourcesDirectory, 'KS_nav_ui.png');		
var localFile     =     downloadPath.read();
Ti.API.info(typeof localFile);
localmd5checksum     =     Ti.Utils.md5HexDigest(localFile);
Ti.API.info(localmd5checksum);
alert(localmd5checksum);

Discussions

http://developer.appcelerator.com/question/122224/verify-file-checksum (11 months old)