How can I use Shared library in C Native code

[srandroidbeginer]

Hi,
I want to use third party shared library in my C Native code. I tried
dlopen("/data/data/com.example.HelloJni/lib/libabc.so", RTLD_LAZY);
but giving error. Do I need to load explicitly through dlopen?

Why I am not able to load the library from C code. I apreciate your
help.

Thanks
Srikanth

[David Turner]

what is the error reported by dlerror() exactly ?

how was the library generated ?

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[karl-heinz reichel]

Hi,

I think You can only load shared libs with dlopen, when they are located in /system/lib ..

regards 

karl-heinz

2009/10/31 srandroidbeginer <sro...@gmail.com>

[Dianne Hackborn]

On Sat, Oct 31, 2009 at 4:38 AM, srandroidbeginer <sro...@gmail.com> wrote:

dlopen("/data/data/com.example.HelloJni/lib/libabc.so", RTLD_LAZY);

Please never ever hard-code a path like that.  There are Java APIs to get the path to your data.  I can guarantee that if you use a hard-coded path that your app will break in certain situations in the future.

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Dianne Hackborn
Android framework engineer
hac...@android.com

Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails.  All such questions should be posted on public forums, where I and others can see and answer them.

[lath...@gmail.com]

Hi Dianne,

> Please never ever hard-code a path like that. There are Java APIs to get
> the path to your data.

Could you please suggest us those APIs & how they are used to get the
path of the libs?

That will be very useful for most of us.

thanks a lot
Latha

On Nov 19 2009, 3:47 am, Dianne Hackborn <hack...@android.com> wrote:

> On Sat, Oct 31, 2009 at 4:38 AM, srandroidbeginer <srou...@gmail.com> wrote:
> > dlopen("/data/data/com.example.HelloJni/lib/libabc.so", RTLD_LAZY);
>
> Please never ever hard-code a path like that.  There are Java APIs to get
> the path to your data.  I can guarantee that if you use a hard-coded path
> that your app will break in certain situations in the future.
>
> --
> Dianne Hackborn
> Android framework engineer

> hack...@android.com