Sample Example for Android not working

[gamerfan]

Hi,
I have been working on the sample example provided in Wiki and I am using NetBeans with Android to develop and run.I have modified the code in such a way that it is not using texture support and commented those lines.However, this is not producing any result and I am getting an error saying "this program has stopped unexpectedly.Please try again"

Code Select Expand


package org.me.home;

import android.app.Activity;
import android.opengl.GLSurfaceView;
import android.os.Bundle;
import android.view.MotionEvent;
import com.threed.jpct.Camera;
import com.threed.jpct.FrameBuffer;
import com.threed.jpct.Light;
import com.threed.jpct.Logger;
import com.threed.jpct.Object3D;
import com.threed.jpct.Primitives;
import com.threed.jpct.RGBColor;
import com.threed.jpct.SimpleVector;
import com.threed.jpct.World;
import com.threed.jpct.util.MemoryHelper;
import java.lang.reflect.Field;
import javax.microedition.khronos.egl.EGL10;
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.egl.EGLDisplay;
import javax.microedition.khronos.opengles.GL10;

/**
*
* @author gamerfan
*/

public class MainActivity extends Activity {

// Used to handle pause and resume...
private static MainActivity master = null;

private GLSurfaceView mGLView;
private MyRenderer renderer = null;
private FrameBuffer fb = null;
private World world = null;
private RGBColor back = new RGBColor(50, 50, 100);

private float touchTurn = 0;
private float touchTurnUp = 0;

private float xpos = -1;
private float ypos = -1;

private Object3D cube = null;
private int fps = 0;

private Light sun = null;

    @Override
protected void onCreate(Bundle savedInstanceState) {

Logger.log("onCreate");

if (master != null) {
copy(master);
}

super.onCreate(savedInstanceState);
mGLView = new GLSurfaceView(getApplication());

mGLView.setEGLConfigChooser(new GLSurfaceView.EGLConfigChooser() {
public EGLConfig chooseConfig(EGL10 egl, EGLDisplay display) {
// Ensure that we get a 16bit framebuffer. Otherwise, we'll fall
// back to Pixelflinger on some device (read: Samsung I7500)
int[] attributes = new int[] { EGL10.EGL_DEPTH_SIZE, 16, EGL10.EGL_NONE };
EGLConfig[] configs = new EGLConfig[1];
int[] result = new int[1];
egl.eglChooseConfig(display, attributes, configs, 1, result);
return configs[0];
}
});

renderer = new MyRenderer();
mGLView.setRenderer(renderer);
setContentView(mGLView);
}

@Override
protected void onPause() {
super.onPause();
mGLView.onPause();
}

@Override
protected void onResume() {
super.onResume();
mGLView.onResume();
}

@Override
protected void onStop() {
super.onStop();
}

private void copy(Object src) {
try {
Logger.log("Copying data from master Activity!");
Field[] fs = src.getClass().getDeclaredFields();
for (Field f : fs) {
f.setAccessible(true);
f.set(this, f.get(src));
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}

    @Override
public boolean onTouchEvent(MotionEvent me) {

if (me.getAction() == MotionEvent.ACTION_DOWN) {
xpos = me.getX();
ypos = me.getY();
return true;
}

if (me.getAction() == MotionEvent.ACTION_UP) {
xpos = -1;
ypos = -1;
touchTurn = 0;
touchTurnUp = 0;
return true;
}

if (me.getAction() == MotionEvent.ACTION_MOVE) {
float xd = me.getX() - xpos;
float yd = me.getY() - ypos;

xpos = me.getX();
ypos = me.getY();

touchTurn = xd / -100f;
touchTurnUp = yd / -100f;
return true;
}

try {
Thread.sleep(15);
} catch (Exception e) {
// No need for this...
}

return super.onTouchEvent(me);
}

protected boolean isFullscreenOpaque() {
return true;
}

class MyRenderer implements GLSurfaceView.Renderer {

private long time = System.currentTimeMillis();

public MyRenderer() {
}

public void onSurfaceChanged(GL10 gl, int w, int h) {
if (fb != null) {
fb.dispose();
}
fb = new FrameBuffer(gl, w, h);

if (master == null) {

world = new World();
world.setAmbientLight(20, 20, 20);

sun = new Light(world);
sun.setIntensity(250, 250, 250);

// Create a texture out of the icon...:-)
//Texture texture = new Texture(BitmapHelper.rescale(BitmapHelper.convert(getResources().getDrawable(R.drawable.icon)), 64, 64));
//TextureManager.getInstance().addTexture("texture", texture);

cube = Primitives.getCube(10);
//cube.calcTextureWrapSpherical();
//cube.setTexture("texture");
//cube.strip();
cube.build();

world.addObject(cube);

Camera cam = world.getCamera();
cam.moveCamera(Camera.CAMERA_MOVEOUT, 50);
cam.lookAt(cube.getTransformedCenter());

SimpleVector sv = new SimpleVector();
sv.set(cube.getTransformedCenter());
sv.y -= 100;
sv.z -= 100;
sun.setPosition(sv);
MemoryHelper.compact();

if (master == null) {
Logger.log("Saving master Activity!");
master = MainActivity.this;
}
}
}

public void onSurfaceCreated(GL10 gl, EGLConfig config) {
}

public void onDrawFrame(GL10 gl) {
if (touchTurn != 0) {
cube.rotateY(touchTurn);
touchTurn = 0;
}

if (touchTurnUp != 0) {
cube.rotateX(touchTurnUp);
touchTurnUp = 0;
}

fb.clear(back);
world.renderScene(fb);
world.draw(fb);
fb.display();

if (System.currentTimeMillis() - time >= 1000) {
Logger.log(fps + "fps");
fps = 0;
time = System.currentTimeMillis();
}
fps++;
}
}
}

Not able to figure out why this is happening.Thanks in advance.

[EgonOlsen]

Please post the DDMS log output.

[gamerfan]

Please find the log output

Code Select Expand


09-07 14:27:47.820: ERROR/AndroidRuntime(791): FATAL EXCEPTION: main
09-07 14:27:47.820: ERROR/AndroidRuntime(791): java.lang.NoClassDefFoundError: com.threed.jpct.RGBColor
09-07 14:27:47.820: ERROR/AndroidRuntime(791):     at org.me.home.MainActivity.<init>(MainActivity.java:42)
09-07 14:27:47.820: ERROR/AndroidRuntime(791):     at java.lang.Class.newInstanceImpl(Native Method)
09-07 14:27:47.820: ERROR/AndroidRuntime(791):     at java.lang.Class.newInstance(Class.java:1429)
09-07 14:27:47.820: ERROR/AndroidRuntime(791):     at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
09-07 14:27:47.820: ERROR/AndroidRuntime(791):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2577)
09-07 14:27:47.820: ERROR/AndroidRuntime(791):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
09-07 14:27:47.820: ERROR/AndroidRuntime(791):     at android.app.ActivityThread.access$2300(ActivityThread.java:125)
09-07 14:27:47.820: ERROR/AndroidRuntime(791):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
09-07 14:27:47.820: ERROR/AndroidRuntime(791):     at android.os.Handler.dispatchMessage(Handler.java:99)
09-07 14:27:47.820: ERROR/AndroidRuntime(791):     at android.os.Looper.loop(Looper.java:123)
09-07 14:27:47.820: ERROR/AndroidRuntime(791):     at android.app.ActivityThread.main(ActivityThread.java:4627)
09-07 14:27:47.820: ERROR/AndroidRuntime(791):     at java.lang.reflect.Method.invokeNative(Native Method)
09-07 14:27:47.820: ERROR/AndroidRuntime(791):     at java.lang.reflect.Method.invoke(Method.java:521)
09-07 14:27:47.820: ERROR/AndroidRuntime(791):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
09-07 14:27:47.820: ERROR/AndroidRuntime(791):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
09-07 14:27:47.820: ERROR/AndroidRuntime(791):     at dalvik.system.NativeStart.main(Native Method)
09-07 14:27:47.850: WARN/ActivityManager(60):   Force finishing activity org.me.home/.MainActivity

I have this class in my classpath and it is not giving any compile time errors.

[gamerfan]

I have added the following lines in my build.xml file and ran the sample.But this time no error comes in DDMS, but still I am getting the same old error.

Code Select Expand


<target name="-pre-jar">
       <copy todir="${build.classes.dir}">
       <fileset dir="C:\jpct-ae\jpct-ae\lib" />
      </copy>
      </target> 

This entry for jpct.jar file while running the application.

[gamerfan]

This has been solved.The jpct_ae.jar must be present where my applications class file are.It was pure environmental issue.Thanks