Cornell Research Study about Android and Open Source: 20-30 minute interviews - Flexible Times

by Fred Grott » Wed, 29 Apr 2009 05:35:35 GMT

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 Tony Liao,

To make sure you get enough responses are you open to a talk either  by
gtalk voice or sklype as well?

On Tue, Apr 28, 2009 at 4:24 PM, <


Other Threads

1. META-INF from imported jars

I've been playing around with a simple IMAP client for Android using  
the Sun javamail API. After overcoming java.awt.datatransfer  
dependency limitations of the activation.jar (as described by
, I discovered that I can only derive an InputStream from a  
MimeMessage contents. Strangely, nearly identical code works correctly  
as a normal java application.

After a deep dive into the javamail.jar and activation.jar source  
code, I discovered the problem. The android application cannot find  
the META-INF/mailcap file that exists in javamail.jar. I've traced the  
problem as far as the call to ClassLoader.getResources("META-INF/ 
mailcap") in SecuritySupport.getResources() of activation.jar.  
Unfortunately, the Android SDK does not provide the source for  
ClassLoader and I cannot inspect the operation. I can only see that it  
returns an empty enumeration.

While the above case may be limited in scope (although I imagine  
Android users will want an IMAP client), it may be endemic of a larger  
problem. Namely,

Does the Android SDK import files included in the META-INF directories  
of imported jar files?



William Enck
Department of Computer Science and Engineering
The Pennsylvania State University


2. Android Tutorial by Dan Morril

Have tried Android Tutorial by Dan Morril on YouTube, tested on
Android SDK m5-RC15.

Those bunch of code seems not working on the new release, have not
tried the older release, do not have a copy of it.

Have anyone here get the code working before? Would very much
appreciate to hear about it.

Avatar Ng

3. Access caller activity from a called activity

4. Developing messaging library. Communicating Service to Activity

5. How to initiate call

6. intent-filter need and good document

7. problem with ContentObserver