Hey guys, I'm I guess what you would call an aspiring Android developer. I'm running through the tutorials trying to get a basic handle on things before I go out into the wild and try to brute force my way through my first app. In other words, if I seem like I am confused, chances are I am. :)
Anyway, I'm running through the OpenGL tutorial, and I cannot for the life of me get the application to launch correctly. The program compiles and installs fine, but when I go to run it I get an error saying that the application "unexpectedly closed." I've been pulling my hair out trying to track down the issue, but the LogCat is a bit cryptic (to me) and seems to be referencing methods I didn't explicitly call, which makes it more difficult for me to know where to start. I'm not sure what you guys need to see in order to help, but I attached the java files, the manifest, and the LogCat output. Logcat Output: 12-27 14:27:05.768: W/ActivityThread(3493): Application com.wiley.openglplayground is waiting for the debugger on port 8100...12-27 14:27:05.778: I/System.out(3493): Sending WAIT chunk12-27 14:27:05.878: I/dalvikvm(3493): Debugger is active12-27 14:27:05.978: I/System.out(3493): Debugger has connected12-27 14:27:05.978: I/System.out(3493): waiting for debugger to settle...12-27 14:27:06.179: I/System.out(3493): waiting for debugger to settle...12-27 14:27:06.379: I/System.out(3493): waiting for debugger to settle...12-27 14:27:06.579: I/System.out(3493): waiting for debugger to settle...12-27 14:27:06.779: I/System.out(3493): waiting for debugger to settle...12-27 14:27:06.979: I/System.out(3493): waiting for debugger to settle...12-27 14:27:07.180: I/System.out(3493): waiting for debugger to settle...12-27 14:27:07.380: I/System.out(3493): waiting for debugger to settle...12-27 14:27:07.580: I/System.out(3493): debugger has settled (1420)12-27 14:27:07.890: D/libEGL(3493): loaded /system/lib/egl/libGLES_android.so12-27 14:27:07.890: D/libEGL(3493): loaded /system/lib/egl/libEGL_adreno200.so12-27 14:27:07.900: D/libEGL(3493): loaded /system/lib/egl/libGLESv1_CM_adreno200.so12-27 14:27:07.900: D/libEGL(3493): loaded /system/lib/egl/libGLESv2_adreno200.so12-27 14:27:07.950: D/OpenGLRenderer(3493): Enabling debug mode 012-27 14:27:08.711: D/dalvikvm(3493): threadid=1: still suspended after undo (sc=1 dc=1)12-27 14:28:21.132: D/AndroidRuntime(3493): Shutting down VM12-27 14:28:21.132: W/dalvikvm(3493): threadid=1: thread exiting with uncaught exception (group=0x40a601f8)12-27 14:28:21.252: E/AndroidRuntime(3493): FATAL EXCEPTION: main12-27 14:28:21.252: E/AndroidRuntime(3493): java.lang.NullPointerException12-27 14:28:21.252: E/AndroidRuntime(3493): at android.opengl.GLSurfaceView.surfaceCreated(GLSurfaceView.java:512)12-27 14:28:21.252: E/AndroidRuntime(3493): at android.view.SurfaceView.updateWindow(SurfaceView.java:533)12-27 14:28:21.252: E/AndroidRuntime(3493): at android.view.SurfaceView.access$000(SurfaceView.java:81)12-27 14:28:21.252: E/AndroidRuntime(3493): at android.view.SurfaceView$3.onPreDraw(SurfaceView.java:169)12-27 14:28:21.252: E/AndroidRuntime(3493): at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:590)12-27 14:28:21.252: E/AndroidRuntime(3493): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1617)12-27 14:28:21.252: E/AndroidRuntime(3493): at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2442)12-27 14:28:21.252: E/AndroidRuntime(3493): at android.os.Handler.dispatchMessage(Handler.java:99)12-27 14:28:21.252: E/AndroidRuntime(3493): at android.os.Looper.loop(Looper.java:137)12-27 14:28:21.252: E/AndroidRuntime(3493): at android.app.ActivityThread.main(ActivityThread.java:4575)12-27 14:28:21.252: E/AndroidRuntime(3493): at java.lang.reflect.Method.invokeNative(Native Method)12-27 14:28:21.252: E/AndroidRuntime(3493): at java.lang.reflect.Method.invoke(Method.java:511)12-27 14:28:21.252: E/AndroidRuntime(3493): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)12-27 14:28:21.252: E/AndroidRuntime(3493): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)12-27 14:28:21.252: E/AndroidRuntime(3493): at dalvik.system.NativeStart.main(Native Method)12-27 14:28:21.442: I/Process(3493): Sending signal. PID: 3493 SIG: 9 > > -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
package com.example.lessonone;
import android.app.Activity;
import android.opengl.GLSurfaceView;
import android.os.Bundle;
public class LessonOneActivity extends Activity {
private GLSurfaceView mGLSurfaceView;
@Override
protected void onCreate(Bundle savedInstanceState) {
System.out.println("onCreate called.");
super.onCreate(savedInstanceState);
System.out.println("Super class constructor called.");
mGLSurfaceView.setEGLContextClientVersion(2);
mGLSurfaceView.setRenderer(new LessonOneRenderer());
setContentView(mGLSurfaceView);
System.out.println("OpenGL ES view created and set.");
}
@Override
protected void onResume(){
super.onResume();
mGLSurfaceView.onResume();
System.out.println("Resumed.");
}
@Override
protected void onPause(){
super.onPause();
mGLSurfaceView.onPause();
System.out.println("Paused");
}
}
package com.example.lessonone;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;
import android.opengl.GLES20;
import android.opengl.GLSurfaceView;
import android.opengl.Matrix;
public class LessonOneRenderer implements GLSurfaceView.Renderer {
private final FloatBuffer mTriangle1Vertices;
private final FloatBuffer mTriangle2Vertices;
private final FloatBuffer mTriangle3Vertices;
private final int mBytesPerFloat = 4;
private float[] mViewMatrix = new float[16];
public LessonOneRenderer() {
final float[] triangle1VerticesData = {
// X, Y, Z,
// R, G, B, A
-0.5f, -0.25f, 0.0f,
1.0f, 0.0f, 0.0f, 1.0f,
0.5f, -0.25f, 0.0f,
0.0f, 0.0f, 1.0f, 1.0f,
0.0f, 0.559016994f, 0.0f,
0.0f, 1.0f, 0.0f, 1.0f };
final float[] triangle2VerticesData = {
// X, Y, Z,
// R, G, B, A
-0.5f, 0.25f, 0.0f,
1.0f, 0.0f, 0.0f, 1.0f,
0.5f, 0.25f, 0.0f,
0.0f, 0.0f, 1.0f, 1.0f,
0.0f, 0.559016994f, 0.0f,
0.0f, 1.0f, 0.0f, 1.0f };
final float[] triangle3VerticesData = {
// X, Y, Z,
// R, G, B, A
-0.5f, 0.25f, 0.0f,
1.0f, 0.0f, 0.0f, 1.0f,
-0.5f, -0.25f, 0.0f,
0.0f, 0.0f, 1.0f, 1.0f,
0.0f, 0.559016994f, 0.0f,
0.0f, 1.0f, 0.0f, 1.0f };
// Initialize the buffers.
mTriangle1Vertices = ByteBuffer.allocateDirect(triangle1VerticesData.length * mBytesPerFloat).order(ByteOrder.nativeOrder()).asFloatBuffer();
mTriangle2Vertices = ByteBuffer.allocateDirect(triangle2VerticesData.length * mBytesPerFloat).order(ByteOrder.nativeOrder()).asFloatBuffer();
mTriangle3Vertices = ByteBuffer.allocateDirect(triangle3VerticesData.length * mBytesPerFloat).order(ByteOrder.nativeOrder()).asFloatBuffer();
mTriangle1Vertices.put(triangle1VerticesData).position(0);
mTriangle2Vertices.put(triangle2VerticesData).position(0);
mTriangle3Vertices.put(triangle3VerticesData).position(0);
}
@Override
public void onDrawFrame(GL10 gl) {
}
@Override
public void onSurfaceChanged(GL10 gl, int width, int height) {
// TODO Auto-generated method stub
}
@Override
public void onSurfaceCreated(GL10 gl, EGLConfig config) {
// Set background color to grey.
GLES20.glClearColor(0.5f, 0.5f, 0.5f, 0.5f);
// Position the eye behind the origin
final float eyeX = 0.0f;
final float eyeY = 0.0f;
final float eyeZ = 1.5f;
// We are looking toward the distance
final float lookX = 0.0f;
final float lookY = 0.0f;
final float lookZ = -5.0f;
// Set out up vector. THis is where our head would be pointing were we holding the camera.
final float upX = 0.0f;
final float upY = 1.0f;
final float upZ = 0.0f;
Matrix.setLookAtM(mViewMatrix, 0, eyeX, eyeY, eyeZ, lookX, lookY, lookZ, upX, upY, upZ);
final String vertexShader =
"uniform mat4 u_MVPMatrix; \n" // A constant representing the combined model/view/projection matrix.
+ "attribute vec4 a_Position; \n" // Per-vertex position information we will pass in.
+ "attribute vec4 a_Color; \n" // Per-vertex color information we will pass in.
+ "varying vec4 v_Color; \n" // This will be passed into the fragment shader.
+ "void main() \n" // The entry point for our vertex shader.
+ "{ \n"
+ " v_Color = a_Color; \n" // Pass the color through to the fragment shader.
// It will be interpolated across the triangle.
+ " gl_Position = u_MVPMatrix \n" // gl_Position is a special variable used to store the final position.
+ " * a_Position; \n" // Multiply the vertex by the matrix to get the final point in
+ "} \n"; // normalized screen coordinates.
final String fragmentShader =
"precision mediump float; \n" // Set the default precision to medium. We don't need as high of a
// precision in the fragment shader.
+ "varying vec4 v_Color; \n" // This is the color from the vertex shader interpolated across the
// triangle per fragment.
+ "void main() \n" // The entry point for our fragment shader.
+ "{ \n"
+ " gl_FragColor = v_Color; \n" // Pass the color directly through the pipeline.
+ "} \n";
// Load in the vertex shader.
int vertexShaderHandle = GLES20.glCreateShader(GLES20.GL_VERTEX_SHADER);
String shaderLog = null;
if(vertexShaderHandle != 0){
// Pass in the shader source
GLES20.glShaderSource(vertexShaderHandle, vertexShader);
// Compile the shader.
GLES20.glCompileShader(vertexShaderHandle);
// Get the compilation status.
final int[] compileStatus = new int[1];
GLES20.glGetShaderiv(vertexShaderHandle, GLES20.GL_COMPILE_STATUS, compileStatus, 0);
// If the compilation failed, delete the shader.
if (compileStatus[0] == 0){
// Copy shader info log to String 'shaderLog' for throwing an exception.
shaderLog = GLES20.glGetShaderInfoLog(vertexShaderHandle);
GLES20.glDeleteShader(vertexShaderHandle);
vertexShaderHandle = 0;
}
}
if(vertexShaderHandle == 0){
if(shaderLog == null){
throw new RuntimeException("Error creating vertex shader.");
}
else{
throw new RuntimeException(shaderLog);
}
}
// Load in the fragment shader.
int fragmentShaderHandle = GLES20.glCreateShader(GLES20.GL_FRAGMENT_SHADER);
if(fragmentShaderHandle != 0){
// Pass in the shader source.
GLES20.glShaderSource(fragmentShaderHandle, fragmentShader);
// Compile the shader.
GLES20.glCompileShader(fragmentShaderHandle);
// Get compilation status.
final int[] compileStatus = new int[1];
GLES20.glGetShaderiv(fragmentShaderHandle, GLES20.GL_COMPILE_STATUS, compileStatus, 0);
if(compileStatus[0] == 0){
// Copy shader info log to String 'shaderLog' for throwing an exception.
shaderLog = GLES20.glGetShaderInfoLog(fragmentShaderHandle);
GLES20.glDeleteShader(fragmentShaderHandle);
fragmentShaderHandle = 0;
}
}
if(fragmentShaderHandle == 0){
if(shaderLog == null){
throw new RuntimeException("Error creating fragment shader.");
}
else{
throw new RuntimeException(shaderLog);
}
}
// Create a program object and store the handle to it.
int programHandle = GLES20.glCreateProgram();
if(programHandle != 0){
// Attach vertex shader to program.
GLES20.glAttachShader(programHandle, vertexShaderHandle);
// Attach fragment shader to program.
GLES20.glAttachShader(programHandle, fragmentShaderHandle);
// TODO Finish Lesson One!!!
}
}
}
AndroidManifest.xml
Description: XML document
