为什么我的OpenGL代码失败？

Question

请记住，我是Android新手，我没有使用过OpenGL的经验。 我跟着这个教训： http://developer.android.com/training/graphics/opengl/environment.html

和我当前的代码是：

OpenGLESTestActivity.java：

package com.KML; 

import android.app.Activity; 
import android.content.Context; 
import android.os.Bundle; 
import android.opengl.*; 

import com.KML.MyGLRenderer; 

public class OpenGLESTestActivity extends Activity { 
    /** Called when the activity is first created. */ 

    private GLSurfaceView mGLView; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

     mGLView = new MyGLSurfaceView(this); 
     setContentView(mGLView); 
    } 
} 

class MyGLSurfaceView extends GLSurfaceView { 


    public MyGLSurfaceView(Context context) { 
     super(context); 
     setRenderer(new MyGLRenderer()); 
     this.setEGLContextClientVersion(2); 
     this.setRenderMode(RENDERMODE_WHEN_DIRTY); 
    } 
} 

在MyGLRenderer.java

：

package com.KML; 

import android.opengl.GLES20; 

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

import android.opengl.GLSurfaceView; 


public class MyGLRenderer implements GLSurfaceView.Renderer { 

    public void onSurfaceCreated(GL10 unused, EGLConfig config) { 
     GLES20.glClearColor(0.5f, 0.5f, 0.5f, 1.0f); 
    } 

    public void onDrawFrame(GL10 unused) { 
     GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT); 
    } 

    public void onSurfaceChanged(GL10 unused, int width, int height) { 
     GLES20.glViewport(0, 0, width, height); 
    } 

} 

这是给我的“不幸的是，OpenGLESTest停止了。“在我的Android设备上。

感谢

Answer 1

OpenGLES on Android - IllegalStateException: setRenderer has already been called for this instance

public MyGLSurfaceView(Context context) 
{ 
    super(context); 
    setEGLContextClientVersion(2); 
    setRenderer (new MyRenderer()); 
    setRenderMode(GLSurfaceView.RENDERMODE_WHEN_DIRTY); 
} 

这是您设置的一切，这是错误的顺序。