dllDirStr - Where to find plugin DLLs?

Trevor Adams

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Mar 23, 2012, 8:49:27 PM3/23/12

to supercollider-android-developers

Hello there.

I've been trying to to make a simple application using SC following
this tutorial:

https://github.com/glastonbridge/SuperCollider-Android/wiki/Use-SuperCollider-in-your-Android-Activity

...but my program crashes on the line "superCollider = new
SCAudio(dllDirStr);" It's not clear to me from the tutorial whether
the definition of dllDirStr needs to be changed (from "/data/data/
net.sf.supercollider.android/lib"), and if so, to what.

I can still try running SC as a service, but it would be good to have
this as an option. I'm running a Ubuntu 10.04 VM on a 64 bit Windows
7 machine (long story). Let me know if you have any suggestions,
thanks!

Trevor

Error:
03-24 00:20:43.557: W/dalvikvm(539): Exception Ljava/lang/
UnsatisfiedLinkError; thrown while initializing Lnet/sf/supercollider/
android/SCAudio;
03-24 00:20:43.566: D/AndroidRuntime(539): Shutting down VM
03-24 00:20:43.566: W/dalvikvm(539): threadid=1: thread exiting with
uncaught exception (group=0x409c01f8)
03-24 00:20:43.597: E/AndroidRuntime(539): FATAL EXCEPTION: main
03-24 00:20:43.597: E/AndroidRuntime(539):
java.lang.ExceptionInInitializerError
03-24 00:20:43.597: E/AndroidRuntime(539): at
tadams.scTest.HelloSuperColliderActivity.onCreate(HelloSuperColliderActivity.java:
27)
03-24 00:20:43.597: E/AndroidRuntime(539): at
android.app.Activity.performCreate(Activity.java:4465)
03-24 00:20:43.597: E/AndroidRuntime(539): at
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:
1049)
03-24 00:20:43.597: E/AndroidRuntime(539): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:
1920)
03-24 00:20:43.597: E/AndroidRuntime(539): at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:
1981)
03-24 00:20:43.597: E/AndroidRuntime(539): at
android.app.ActivityThread.access$600(ActivityThread.java:123)
03-24 00:20:43.597: E/AndroidRuntime(539): at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)

Dan Stowell

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Mar 25, 2012, 3:22:21 PM3/25/12

to supercollider-an...@googlegroups.com

Hi -

"/data/data/net.sf.supercollider.android/lib" may be wrong depending
on your android device. Do you know where application data is normally
stored? If so change the first bit "/data/data". There is in fact an
android SDK call to ask where the data folder is, and maybe you can
use that and it'll work fine - on our development device (a while ago
now, many android versions ago) that call didn't work properly.

Best
Dan

2012/3/24 Trevor Adams <trevor...@gmail.com>:

--
http://www.mcld.co.uk

Trevor Adams

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Mar 27, 2012, 5:02:09 PM3/27/12

to supercollider-android-developers

Thank you very much for your help. I haven't been able to determine
the application data directory on my physical phone (Nexus S), but the
emulator's path is "data/data", and the program fails there as well.
I'm wondering if the files are failing to upload to the lib folder at
all. The guide doesn't mention anything, but does anything need to be
done to load those files (besides including SuperColliderActivity as a
library)? The Android Developer page linked to in the guide mentions
a <use-library> tag in the manifest, but after looking at that, I
wasn't sure it was relevant. Adding it results in an
"INSTALL_FAILED_MISSING_SHARED_LIBRARY" error.

Thank you again for your help.

Source:
package tadams.scTest;

import android.app.Activity;
import android.media.AudioManager;
import android.os.Bundle;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import net.sf.supercollider.android.SCAudio;
import net.sf.supercollider.android.ScService;
import net.sf.supercollider.android.OscMessage;

public class HelloSuperColliderActivity extends Activity implements
OnTouchListener {

public static final String dllDirStr = "/data/data/tadams.scTest/
lib";// Where to find the plugin DLLs
//public static final String dllDirStr = "/Android/data/
net.sf.supercollider.android/lib";// Where to find the plugin DLLs
private SCAudio superCollider;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

// Starting SuperCollider:
superCollider = new SCAudio(dllDirStr);
superCollider.start();

superCollider.sendMessage(OscMessage.createSynthMessage("default",
999, 0, 1));//create synth
}

...
}

Complete Error (chopped off bottom last time):
03-24 00:20:43.057: D/dalvikvm(539): Not late-enabling CheckJNI
(already on)

android.os.Handler.dispatchMessage(Handler.java:99)