的ExceptionInInitializerError [英] ExceptionInInitializerError

问题描述

我想是因为我有困扰引用该有一个方法来初始化GL11

I'm trying to initialize GL11 because i was having troubling referencing a method that had

GL11 gl 

作为其参数。我想在我的渲染类来初始化，但它没有工作，所以我想它的初始化与渲染搞乱并创建了一个新的类初始化。

as its argument. I tried to initialize it in my renderer class but it didn't work so I figured that it the initialization was messing with the renderer and created a new class to initialize in.

import javax.microedition.khronos.egl.EGL10;
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.egl.EGLContext;
import javax.microedition.khronos.egl.EGLDisplay;
import javax.microedition.khronos.opengles.GL11;

import android.opengl.GLU;



public class Unproject {

public static float setx;
public static float sety;
public static float posx, posy, posz;

EGLConfig[] configs = new EGLConfig[1];
EGLConfig config = configs[0];
static EGLContext glContext; 
public static GL11 gl = (GL11)glContext.getGL();
EGLDisplay dpy =  ((EGL10) gl).eglGetDisplay(EGL10.EGL_DEFAULT_DISPLAY);

public Unproject() {
    glContext = ((EGL10) gl).eglCreateContext(dpy, config, EGL10.EGL_NO_CONTEXT, null);
}

    public static void vector3 (GL11 gl){

        int[] viewport = new int[4];
        float[] modelview = new float[16];
        float[] projection = new float[16];
        float winx, winy, winz;
        float[] newcoords = new float[3];

        gl.glGetIntegerv(GL11.GL_VIEWPORT, viewport, 0);
        gl.glGetFloatv(GL11.GL_MODELVIEW_MATRIX, modelview, 0);
        gl.glGetFloatv(GL11.GL_PROJECTION_MATRIX, projection, 0);

        winx = (float)setx;
        winy = (float)viewport[3] - sety;
        winz = 0;

        GLU.gluUnProject(winx, winy, winz, modelview, 0, projection, 0, viewport, 0, newcoords, 0);
        posx = (int)newcoords[1];
        posy = (int)newcoords[2];
        posz = (int)newcoords[3];


    }
}

的Vector3是我遇到的麻烦的方法。我搬到这里到从渲染这个类。

Vector3 is the method I was having trouble with. I moved it here into this class from the renderer.

下面是我的渲染器：

import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;
import javax.microedition.khronos.opengles.GL11;


import android.opengl.GLU;
import android.opengl.GLSurfaceView.Renderer;
import android.view.MotionEvent;


public class GLSurfaceRenderer implements Renderer{


public float setx, sety;
private float posx, posy, posz;
private double speed;
private static float rotation;
private static float statrotation;

GL11 gl; 



private static FlatColoredSquare square;
private static FlatColoredSquare statSquare;



    public GLSurfaceRenderer () {

    square = new FlatColoredSquare();
    statSquare = new FlatColoredSquare();
    rotation = (float) Math.floor(Math.random()*361);
    speed = 0.1;    

}
    public synchronized void randomMethod(MotionEvent event){
        if (event.getAction() == MotionEvent.ACTION_DOWN){
        setx = event.getX();
        sety = event.getY();
        Unproject.vector3(gl);
        }
    }   

@Override
public void onDrawFrame(GL10 gl) {
         gl.glClear(GL10.GL_COLOR_BUFFER_BIT |
            GL10.GL_DEPTH_BUFFER_BIT);
    gl.glLoadIdentity();
    gl.glScalef(10, 10, 0);
    gl.glPushMatrix();
    gl.glRotatef(rotation, 0, 0, 1);
    gl.glTranslatef((float) speed/10, 0, 0);    
    square.draw(gl);    
    gl.glPopMatrix();

    gl.glPushMatrix();
    gl.glTranslatef(posx, posy, posz);
    gl.glRotatef(statrotation,0,0,1);
    statSquare.draw(gl);
    gl.glPopMatrix();


    statrotation++;
    speed++;    

}   





@Override
public void onSurfaceChanged(GL10 gl, int width, int height) {
    gl.glViewport(0, 0, width, height);
    gl.glMatrixMode(GL10.GL_PROJECTION);
    gl.glLoadIdentity();
    GLU.gluOrtho2D(gl, 0.0f, width, 0.0f, height);
    gl.glMatrixMode(GL10.GL_MODELVIEW);
    gl.glLoadIdentity();

}

@Override
public void onSurfaceCreated(GL10 gl, EGLConfig config) {
    gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
    gl.glShadeModel(GL10.GL_SMOOTH);
    gl.glClearDepthf(1.0f);
    gl.glEnable(GL10.GL_DEPTH_TEST);
    gl.glDepthFunc(GL10.GL_LEQUAL);
    gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT, GL10.GL_NICEST);

}



}

Unfortuanatly这个code抛出的ExceptionInInitializerError

Unfortuanatly this code throws an ExceptionInInitializerError

08-01 17:01:34.672: ERROR/AndroidRuntime(421): Uncaught handler: thread main exiting due to uncaught exception
08-01 17:01:34.762: ERROR/AndroidRuntime(421): java.lang.ExceptionInInitializerError
08-01 17:01:34.762: ERROR/AndroidRuntime(421):     at android.app.ui.GLSurfaceRenderer.randomMethod(GLSurfaceRenderer.java:44)
08-01 17:01:34.762: ERROR/AndroidRuntime(421):     at android.app.ui.Practice.onTouchEvent(Practice.java:37)
08-01 17:01:34.762: ERROR/AndroidRuntime(421):     at android.app.Activity.dispatchTouchEvent(Activity.java:2064)
08-01 17:01:34.762: ERROR/AndroidRuntime(421):     at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1643)
08-01 17:01:34.762: ERROR/AndroidRuntime(421):     at android.view.ViewRoot.handleMessage(ViewRoot.java:1690)
08-01 17:01:34.762: ERROR/AndroidRuntime(421):     at android.os.Handler.dispatchMessage(Handler.java:99)
08-01 17:01:34.762: ERROR/AndroidRuntime(421):     at android.os.Looper.loop(Looper.java:123)
08-01 17:01:34.762: ERROR/AndroidRuntime(421):     at android.app.ActivityThread.main(ActivityThread.java:4310)
08-01 17:01:34.762: ERROR/AndroidRuntime(421):     at java.lang.reflect.Method.invokeNative(Native Method)
08-01 17:01:34.762: ERROR/AndroidRuntime(421):     at java.lang.reflect.Method.invoke(Method.java:521)
08-01 17:01:34.762: ERROR/AndroidRuntime(421):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
08-01 17:01:34.762: ERROR/AndroidRuntime(421):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
08-01 17:01:34.762: ERROR/AndroidRuntime(421):     at dalvik.system.NativeStart.main(Native Method)
08-01 17:01:34.762: ERROR/AndroidRuntime(421): Caused by: java.lang.NullPointerException
08-01 17:01:34.762: ERROR/AndroidRuntime(421):     at android.app.ui.Unproject.<clinit>(Unproject.java:22)
08-01 17:01:34.762: ERROR/AndroidRuntime(421):     ... 13 more

有什么我可以做纠正呢？我是完全错了目标？我想可能是因为我在类之间共享变量的方式，有没有更好的方式来做到这一点？

Is there anything I can do to correct this? Am I completely up the wrong tree? I think it might be the way that I'm sharing variables between classes, is there a better way to do that?

推荐答案

的基于此文档创建一ExceptionInInitializerError被抛出，指示静态初始化或静态变量初始化的评估过程中发生了异常。检查你的code的任何静态初始化逻辑。

Based on this documentation An ExceptionInInitializerError is thrown to indicate that an exception occurred during evaluation of a static initializer or the initializer for a static variable. Check your code has any static initialization logic.

这篇关于的ExceptionInInitializerError的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！