Java 当我试图创建一个开放的GL ES环境时,我的应用程序不断崩溃
我正在学习android教程,学习如何使用图形创建自己的OpenGL ES环境。除了教程似乎跳过了他们认为我们应该包含的代码之外,我在让我的应用程序保持打开状态而不显示错误消息时遇到了问题,在应用程序打开五秒钟后,“不幸的是,我的应用程序已停止”。我不相信是triangle类导致了这种情况,因为我注释掉了triangle对象并试图再次运行它,但同样的情况也发生了。我还包括了应该包含在清单中的必要代码 这是我的代码(开放式总账ES代码位于虚线之间): 这是为需要它的人准备的日志: 06-23 11:44:30.385:D/ActivityThread(27794):设置目标应用利用率:0.25 06-23 11:44:30.385:D/ActivityThread(27794):SetTargetTheApidealFree:8388608 06-23 11:44:30.385:D/ActivityThread(27794):设置目标APCONcurrentStart:2097152 06-23 11:44:30.535:W/dalvikvm(27794):threadid=1:线程以未捕获异常退出(组=0x40ee7438) 06-23 11:44:30.535:E/AndroidRuntime(27794):致命异常:主 06-23 11:44:30.535:E/AndroidRuntime(27794):java.lang.RuntimeException:无法启动活动组件信息{com.example.myapp5/com.example.myapp5.MainActivity}:java.lang.IllegalStateException:已为此实例调用setRenderer。 06-23 11:44:30.535:E/AndroidRuntime(27794):在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2110) 06-23 11:44:30.535:E/AndroidRuntime(27794):在android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2135) 06-23 11:44:30.535:E/AndroidRuntime(27794):在android.app.ActivityThread.access$700(ActivityThread.java:143) 06-23 11:44:30.535:E/AndroidRuntime(27794):在android.app.ActivityThread$H.handleMessage(ActivityThread.java:1241) 06-23 11:44:30.535:E/AndroidRuntime(27794):在android.os.Handler.dispatchMessage(Handler.java:99) 06-23 11:44:30.535:E/AndroidRuntime(27794):在android.os.Looper.loop(Looper.java:137) 06-23 11:44:30.535:E/AndroidRuntime(27794):在android.app.ActivityThread.main(ActivityThread.java:4953) 06-23 11:44:30.535:E/AndroidRuntime(27794):位于java.lang.reflect.Method.invokenactive(本机方法) 06-23 11:44:30.535:E/AndroidRuntime(27794):位于java.lang.reflect.Method.invoke(Method.java:511) 06-23 11:44:30.535:E/AndroidRuntime(27794):在com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1004) 06-23 11:44:30.535:E/AndroidRuntime(27794):位于com.android.internal.os.ZygoteInit.main(ZygoteInit.java:771) 06-23 11:44:30.535:E/AndroidRuntime(27794):在dalvik.system.NativeStart.main(本机方法) 06-23 11:44:30.535:E/AndroidRuntime(27794):原因:java.lang.IllegalStateException:已为此实例调用setRenderer。 06-23 11:44:30.535:E/AndroidRuntime(27794):在android.opengl.GLSurfaceView.checkRenderThreadState(GLSurfaceView.java:1810) 06-23 11:44:30.535:E/AndroidRuntime(27794):在android.opengl.GLSurfaceView.setEGLContextClientVersion(GLSurfaceView.java:472) 06-23 11:44:30.535:E/AndroidRuntime(27794):在com.example.myapp5.MainActivity$MyGLSurfaceView。(MainActivity.java:80) 06-23 11:44:30.535:E/AndroidRuntime(27794):位于com.example.myapp5.MainActivity.onCreate(MainActivity.java:31) 06-23 11:44:30.535:E/AndroidRuntime(27794):在android.app.Activity.performCreate(Activity.java:5160)上 06-23 11:44:30.535:E/AndroidRuntime(27794):在android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094) 06-23 11:44:30.535:E/AndroidRuntime(27794):在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2074) 06-23 11:44:30.535:E/AndroidRuntime(27794):。。。还有11个Java 当我试图创建一个开放的GL ES环境时,我的应用程序不断崩溃,java,android,eclipse,opengl-es-2.0,Java,Android,Eclipse,Opengl Es 2.0,我正在学习android教程,学习如何使用图形创建自己的OpenGL ES环境。除了教程似乎跳过了他们认为我们应该包含的代码之外,我在让我的应用程序保持打开状态而不显示错误消息时遇到了问题,在应用程序打开五秒钟后,“不幸的是,我的应用程序已停止”。我不相信是triangle类导致了这种情况,因为我注释掉了triangle对象并试图再次运行它,但同样的情况也发生了。我还包括了应该包含在清单中的必要代码 这是我的代码(开放式总账ES代码位于虚线之间): 这是为需要它的人准备的日志: 06-23 11
setEGLContextClientVersion()
需要在setRenderer()
之前调用,如文档中所述:
在您复制的堆栈跟踪中,还有一个提示表明这是您的问题:
java.lang.IllegalStateException:已为此实例调用setRenderer
public class MainActivity extends ActionBarActivity {
private GLSurfaceView mGLView;
private GLSurfaceView.Renderer MyRenderer;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mGLView=new MyGLSurfaceView(this);
setContentView(mGLView);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
public PlaceholderFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container,
false);
return rootView;
}
}
//....................................................................................................
class MyGLSurfaceView extends GLSurfaceView{
public MyGLSurfaceView(Context context){
super(context);
MyRenderer=new MyGlRenderer();
setRenderer(MyRenderer);
setEGLContextClientVersion(2);
setRenderMode(GLSurfaceView.RENDERMODE_WHEN_DIRTY);
}
}
//Triangle mTriangle;
public class MyGlRenderer implements GLSurfaceView.Renderer{
@Override
public void onSurfaceCreated(GL10 unused, EGLConfig config){
GLES20.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
//mTriangle= new Triangle();
}
@Override
public void onDrawFrame(GL10 unused){
GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);
//mTriangle.draw();
}
@Override
public void onSurfaceChanged(GL10 unused, int width, int height){
GLES20.glViewport(0,0,width,height);
}
}
public class Triangle{
private FloatBuffer vertexBuffer;
static final int COORDS_PER_VERTEX=3;
float triangleCoords[]={
0.0f, 0.622008459f, 0.0f,//top
-0.5f, -0.311004243f, 0.0f, //bottom left
0.5f, -0.311004242f,0.0f//bottom right
};
int mProgram;
float color[] = { 0.63671875f, 0.76953125f, 0.22265625f, 1.0f };
private final String vertexShaderCode =
"attribute vec4 vPosition;" +
"void main() {" +
" gl_Position = vPosition;" +
"}";
private final String fragmentShaderCode =
"precision mediump float;" +
"uniform vec4 vColor;" +
"void main() {" +
" gl_FragColor = vColor;" +
"}";
public Triangle(){
ByteBuffer bb=ByteBuffer.allocateDirect(
triangleCoords.length*4);
bb.order(ByteOrder.nativeOrder());
vertexBuffer=bb.asFloatBuffer();
vertexBuffer.put(triangleCoords);
vertexBuffer.position(0);
int vertexShader=loadShader(GLES20.GL_VERTEX_SHADER, vertexShaderCode);
int fragmentShader=loadShader(GLES20.GL_FRAGMENT_SHADER, fragmentShaderCode);
mProgram=GLES20.glCreateProgram();
GLES20.glAttachShader(mProgram, vertexShader);
GLES20.glAttachShader(mProgram, fragmentShader);
GLES20.glLinkProgram(mProgram);
}
public int loadShader(int type, String shaderCode){
int shader=GLES20.glCreateShader(type);
GLES20.glShaderSource(shader, shaderCode);
GLES20.glCompileShader(shader);
return shader;
}
static final int vertexStride = COORDS_PER_VERTEX * 3;
static final int vertexCount = 3;
public void draw(){
GLES20.glUseProgram(mProgram);
int mPositionHandle= GLES20.glGetAttribLocation(mProgram, "vPosition");
GLES20.glEnableVertexAttribArray(mPositionHandle);
GLES20.glVertexAttribPointer(mPositionHandle, COORDS_PER_VERTEX,
GLES20.GL_FLOAT, false,
vertexStride, vertexBuffer);
int mColorHandle=GLES20.glGetUniformLocation(mProgram,"vColor");
GLES20.glUniform4fv(mColorHandle, 1, color,0);
GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, vertexCount);
GLES20.glDisableVertexAttribArray(mPositionHandle);
}
}
//....................................................................................................
}