我正在尝试这一课
http://developer.android.com/training/graphics/opengl/environment.html
每次我启动应用程序它只是崩溃和日食没有告诉我什么是错的
这是我的代码
package com.example.opengl;
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;
import android.opengl.GLES20;
public class MyGL20Renderer implements MyGLSurfaceView.Renderer {
@Override
public void onSurfaceCreated(GL10 gl, EGLConfig config) {
// Set the background frame color
GLES20.glClearColor(0.5f, 0.5f, 0.5f, 1.0f);
}
@Override
public void onDrawFrame(GL10 gl) {
// Redraw Background Color
GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);
}
@Override
public void onSurfaceChanged(GL10 gl, int width, int height) {
GLES20.glViewport(0, 0, width, height);
}
}
下一课
package com.example.opengl;
import android.content.Context;
import android.opengl.GLSurfaceView;
public class MyGLSurfaceView extends GLSurfaceView {
public MyGLSurfaceView(Context context) {
super(context);
// Set the Renderer for drawing on the GLSurfaceVIew
setRenderer(new MyGL20Renderer());
// Create an OpenGL ES 2.0 context
setEGLContextClientVersion(2);
// Render the view only when there is a change in the drawing data
setRenderMode(GLSurfaceView.RENDERMODE_WHEN_DIRTY);
}
}
最后manifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.opengl"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="16" />
<uses-feature android:glEsVersion="0x00020000" android:required="true" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.opengl.MyGLSurfaceView" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
我一直试图谷歌解决这个问题,但我的谷歌功夫太弱了。
答案 0 :(得分:2)
你的主要活动怎么样?你忘记了吗?
public class MainActivity extends Activity {
private GLSurfaceView mGLView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Create a GLSurfaceView instance and set it
// as the ContentView for this Activity.;
mGLView = new MyGLSurfaceView(this);
setContentView(mGLView);
}
}
我也坚持使用这个例子,虽然我的程序在之后很好地启动它只显示黑屏而不是声明的内容:
public void onSurfaceCreated(GL10 gl, EGLConfig config) {
// Set the background frame color
GLES20.glClearColor(0.5f, 0.5f, 0.5f, 1.0f);
}
编辑:发现我的错误。我在MyGL20Renderer中导入错误,导致另一个onSurfaceChanged方法。