[zeromq-dev] Zyre on Android (JNI)

[Utsav Drolia]

I think you would have to do a “System.loadLibrary()” in the app, for every C-library the app refers to.
Or is that taken care of in the zyre library itself?

Utsav

> On Jan 6, 2016, at 9:20 AM, Arnaud Loonstra <arnaud at sphaero.org> wrote:
> 
> Ok, I played with android studio a bit. Djeez, these dependencies fill 
> my harddrive faster than I can empty. :S
> 
> Anyway, just build a simple app and ran it on a emulator:
> Unfortunately, ZyreTest has stopped
> 
> It seems it can't find the czmq libs?
> 
> 01-06 15:15:20.295 1257-1257/org.z25.zyretest I/art: Not late-enabling 
> -Xcheck:jni (already on)
> 01-06 15:15:20.296 1257-1257/org.z25.zyretest I/art: Late-enabling JIT
> 01-06 15:15:20.701 1257-1257/org.z25.zyretest I/art: JIT created with 
> code_cache_capacity=2MB compile_threshold=1000
> 01-06 15:15:23.956 1257-1257/org.z25.zyretest D/AndroidRuntime: 
> Shutting down VM
> 01-06 15:15:23.996 1257-1257/org.z25.zyretest E/AndroidRuntime: FATAL 
> EXCEPTION: main
> 
> Process: org.z25.zyretest, PID: 1257
> 
> java.lang.UnsatisfiedLinkError: dlopen failed: cannot locate symbol 
> "zsys_handler_set" referenced by 
> "/data/app/org.z25.zyretest-1/lib/arm/libzyrejni.so"...
>                                                                     at 
> java.lang.Runtime.loadLibrary(Runtime.java:372)
>                                                                     at 
> java.lang.System.loadLibrary(System.java:1076)
>                                                                     at 
> org.zeromq.zyre.Zyre.<clinit>(Zyre.java:13)
>                                                                     at 
> org.z25.zyretest.ZyreTest.onCreate(ZyreTest.java:15)
>                                                                     at 
> android.app.Activity.performCreate(Activity.java:6237)
>                                                                     at 
> android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
>                                                                     at 
> android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
>                                                                     at 
> android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
>                                                                     at 
> android.app.ActivityThread.-wrap11(ActivityThread.java)
>                                                                     at 
> android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
>                                                                     at 
> android.os.Handler.dispatchMessage(Handler.java:102)
>                                                                     at 
> android.os.Looper.loop(Looper.java:148)
>                                                                     at 
> android.app.ActivityThread.main(ActivityThread.java:5417)
>                                                                     at 
> java.lang.reflect.Method.invoke(Native Method)
>                                                                     at 
> com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
>                                                                     at 
> com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
> 01-06 15:15:53.015 1257-1264/org.z25.zyretest W/art: Suspending all 
> threads took: 20.768ms
> 01-06 15:16:49.526 1257-1264/org.z25.zyretest W/art: Suspending all 
> threads took: 10.354ms
> 01-06 15:16:54.523 1257-1264/org.z25.zyretest W/art: Suspending all 
> threads took: 10.210ms
> 01-06 15:16:58.523 1257-1264/org.z25.zyretest W/art: Suspending all 
> threads took: 10.207ms
> 01-06 15:18:08.166 1257-1264/org.z25.zyretest W/art: Suspending all 
> threads took: 10.199ms
> 01-06 15:18:11.163 1257-1264/org.z25.zyretest W/art: Suspending all 
> threads took: 10.218ms
> 01-06 15:18:17.163 1257-1264/org.z25.zyretest W/art: Suspending all 
> threads took: 10.194ms
> 01-06 15:18:19.163 1257-1264/org.z25.zyretest W/art: Suspending all 
> threads took: 10.227ms
> 01-06 15:19:00.201 1257-1264/org.z25.zyretest W/art: Suspending all 
> threads took: 25.579ms
> 
> Here's my source:
> 
> package org.z25.zyretest;
> 
> import android.support.v7.app.AppCompatActivity;
> import android.os.Bundle;
> import org.zeromq.zyre.Zyre;
> 
> public class ZyreTest extends AppCompatActivity {
> 
>     public Zyre znode;
> 
>     @Override
>     protected void onCreate(Bundle savedInstanceState) {
>         super.onCreate(savedInstanceState);
>         setContentView(R.layout.activity_zyre_test);
>         znode = new Zyre("AndroidTest");
>         znode.start();
>     }
> 
>     @Override
>     public void onDestroy()
>     {
>         super.onDestroy();
>         znode.stop();
>     }
> }
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