On Thu, Jan 21, 2010 at 2:50 PM, Lior <lior.gon...@gmail.com> wrote:
> Hi guys,
>
> I'm trying to replace the class loader with my custom class loader. I
> don't want to replace the default functionality, only add new
> functionality.
>
> The goal is that every new class instance that calls:
> getClass().getResourceAsStream(resName)
>
> will load the requested resource in the way I define in my
> CustomClassLoader.
>
> My code contains the following:
> ClassLoader classLoader = new CustomClassLoader
> (ClassLoaderTestActivity.class.getClassLoader()); // Create my own
> class loader with the default class loader as parent.
>
> Thread.currentThread().setContextClassLoader(classLoader); // This is
> just for testing
>
> TestClass test = (TestClass)Class.forName("com.test.TestClass", true,
> classLoader).newInstance() ;
>
> Since the 'test' TestClass instance is created with reference to the
> new class-loader, I'd expect that after this line executes,
> test.getClass().getClassLoader() will return an instance of
> CustomClassLoader, but I always get the default PathClassLoader
> returned.Why would you expect that? Java uses parent delegation first so it will find the class in the parent and return that one -- hence, its classloader is the parent. > My only assumption so far is that since my CustomClassLoader only > overrides specific functionality, and the ClassLoader that actually > calls 'defineClass' is the default one, the TestClass instance is > never associated with my ClassLoader. yup. as it should be. > Any help would be highly appreciated. Well, what is it you want to do? You now have a working classloader that delegates classloads to its parent. Assuming you only want to override getResource* then you still need to do that. Otherwise, I'm missing your problem... regards, Karl > Thanks, > Lior > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to android-developers@googlegroups.com > To unsubscribe from this group, send email to > android-developers+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > -- Karl Pauls karlpa...@gmail.com
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