If the amount of 1.5 code is small, you can use reflection to make
the calls in order to fool the verifier. This quickly becomes a pain
in the butt when you have to call more than a few 1.5 methods or work
with multiple 1.5 objects though.
--~--~-~--~~~---~--~~
You
A more straightforward approach that should work is to isolate the affected
code behind an interface, with separate implementations for 1.1 and 1.5. A
factory method can be used to opaquely return the correct instance based on
the build's sdk version. This has the advantage that you can usually
Thanks Tom and Pieter. I haven't tried your suggestions yet, but is
there any guarantee that the phone's VM will not also verify
isolated classes or methods? By analogy to
http://supportforums.blackberry.com/rim/board/message?board.id=java_devmessage.id=17826
(with two Blackberry OS versions, for
The JLS requires that, even if a JVM identifies a binding error early, the
exception raised must be deferred until an attempt is made to use the
class. I'm paraphrasing here, but it's been years since I last read the JLS.
That's the basic idea anyway.
Of course, the interface can only depend on
Indeed it works! Thanks a lot, Tom. My app containing new SDK 1.5 API
calls now runs fine on my SDK 1.1 developer phone. You were absolutely
right, and this solution is elegant from a future maintenance point of
view.
Much appreciated!
On Apr 15, 12:55 pm, Tom Gibara m...@tomgibara.com wrote:
blindfold wrote:
Hi,
I want to avoid the SDK 1.0 and 1.1 workaround for playing synthesized
audio as of SDK1.5, but for older phones or firmware (SDK 1.0 and 1.1
based) I want to maintain backward compatibility and first write audio
to flash memory in order to play the resulting audio file
Thanks, good to know. Still I now find that if I compile my app for
SDK 1.5 but without using any 1.5 features, I can next run my app on
my DP1.1 (SDK 1.1), but just having code with 1.5 features in a branch
that is never reached causes a java.lang.VerifyError when trying to
run on my DP1.1. So
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