Implementing GLSurfaceView.Renderer Issues

问题

Code derived from the tutorial

I am beginning some OpenGL-ES 2.0 for the Android system. I took the following code from: http://developer.android.com/training/graphics/opengl/environment.html#renderer

public class MyRenderer 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);
    }
}

I am receiving the following error

Gradle: error: MyRenderer is not abstract and does not override abstract method onSurfaceCreated(GL10,EGLConfig) in Renderer

Does anyone know how to proceed? I need to use the MyRenderer class to pass to the GLSurfaceView, so simply declaring it abstract is not a viable solution. Can anybody shed some light on my problem?

回答1:

Found the Issue!

The Incorrect version of the imports looked like this

import android.opengl.GLES20;
import android.opengl.GLSurfaceView;
import android.opengl.EGLConfig;

import javax.microedition.khronos.opengles.GL10;

But GLSurfaceView.Renderer wanted the EGLConfig from the javax library

The following code is the Correct version of the imports

import android.opengl.GLES20;
import android.opengl.GLSurfaceView;

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

---

I discovered this after looking at the interface implementation

public static interface Renderer {
    void onSurfaceCreated(javax.microedition.khronos.opengles.GL10 gl10, javax.microedition.khronos.egl.EGLConfig eglConfig);

    void onSurfaceChanged(javax.microedition.khronos.opengles.GL10 gl10, int i, int i1);

    void onDrawFrame(javax.microedition.khronos.opengles.GL10 gl10);
}

来源：https://stackoverflow.com/questions/18553920/implementing-glsurfaceview-renderer-issues