Java 已为此实例调用setRenderer
我知道这个错误消息已经有了答案,但是这些解决方案都没有帮助我解决问题。我正在尝试做一个Java 已为此实例调用setRenderer,java,android,opengl-es,rendering,glsurfaceview,Java,Android,Opengl Es,Rendering,Glsurfaceview,我知道这个错误消息已经有了答案,但是这些解决方案都没有帮助我解决问题。我正在尝试做一个Sierpinski三角形,我有一个MySurfaceView类扩展GLSurfaceView,还有一个MyRenderer类扩展活动并实现渲染器。以下是课程: import android.content.Context; import android.opengl.GLSurfaceView; import android.view.MotionEvent; public class MySurf
Sierpinski三角形
,我有一个MySurfaceView
类扩展GLSurfaceView
,还有一个MyRenderer
类扩展活动
并实现渲染器
。以下是课程:
import android.content.Context;
import android.opengl.GLSurfaceView;
import android.view.MotionEvent;
public class MySurfaceView extends GLSurfaceView {
private MyRenderer renderer;
private float prevX;
private float prevY;
private float ROTATION_FACTOR = 1.0f;
public MySurfaceView(Context context) {
super(context);
// TODO Auto-generated constructor stub
}
public MySurfaceView(Context context, MyRenderer renderer) {
super(context);
this.renderer = renderer;
this.setRenderer(renderer);
this.setRenderMode(RENDERMODE_WHEN_DIRTY);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
switch(event.getAction()){
case MotionEvent.ACTION_MOVE:
float x = event.getX();
float y = event.getY();
float dx = x-prevX;
float dy = y-prevY;
prevX = x;
prevY = y;
float distance = (float) Math.sqrt((double) (dx*dx+dy*dy));
float angle = distance*ROTATION_FACTOR;
if(dy>0){
renderer.increaseRotationAngle(angle);
}else{
renderer.increaseRotationAngle(-angle);
}
this.requestRender();
}
return true;
}
}
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;
import android.app.Activity;
import android.opengl.GLSurfaceView.Renderer;
public class MyRenderer extends Activity implements Renderer {
private Triangle mTriangle;
private float rotationAngle = 0;
private int level;
private int mFill;
public MyRenderer(int level, int mFill)
{
this.level = level;
this.mFill = mFill;
mTriangle = new Triangle(5, "WireFrame");
}
@Override
public void onDrawFrame(GL10 gl) {
gl.glClear(GL10.GL_COLOR_BUFFER_BIT|GL10.GL_DEPTH_BUFFER_BIT);
gl.glLoadIdentity();
gl.glRotatef(rotationAngle, 0, 0, 1);
mTriangle.onDrawFrame(gl);
// TODO Auto-generated method stub
}
@Override
public void onSurfaceChanged(GL10 gl, int width, int height) {
int delta;
if(width<height){
delta=(height-width)/2;
gl.glViewport(0, delta, width, width);
}else{
delta=(width-height)/2;
gl.glViewport(delta, 0, height, height);
}
gl.glMatrixMode(GL10.GL_PROJECTION);
gl.glLoadIdentity();
gl.glOrthof(-1.0f, 1.0f, -1.0f, 1.0f, -0.1f, 0.1f);
gl.glMatrixMode(GL10.GL_MODELVIEW);
// TODO Auto-generated method stub
}
@Override
public void onSurfaceCreated(GL10 gl, EGLConfig config) {
gl.glClearColor(0.8f, 0.8f, 0.8f, 1);
// TODO Auto-generated method stub
}
public void increaseRotationAngle(float delta)
{
rotationAngle+=delta;
System.out.println("Rotating by "+rotationAngle);
}
}
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
public class MainActivity extends Activity {
private MySurfaceView view;
private MyRenderer renderer;
private String levelCount;
public String skew;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(R.layout.activity_main);
renderer = new MyRenderer(3, 1);
view = new MySurfaceView(this, renderer);
view.setRenderer(renderer);
setContentView(view);
}
@Override
public void onPause()
{
view.onPause();
super.onPause();
}
@Override
public void onResume()
{
view.onResume();
super.onResume();
}
@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;
}
}
导入android.content.Context;
导入android.opengl.GLSurfaceView;
导入android.view.MotionEvent;
公共类MySurfaceView扩展了GLSurfaceView{
私人密室;
私人浮动prevX;
私人浮动汇率;
专用浮动旋转系数=1.0f;
公共MySurfaceView(上下文){
超级(上下文);
//TODO自动生成的构造函数存根
}
公共MySurfaceView(上下文,MyRenderer){
超级(上下文);
this.renderer=渲染器;
这个.setRenderer(renderer);
this.setRenderMode(脏时RENDERMODE_);
}
@凌驾
公共布尔onTouchEvent(运动事件){
开关(event.getAction()){
case MotionEvent.ACTION\u移动:
float x=event.getX();
float y=event.getY();
浮动dx=x-prevX;
浮动dy=y-prevY;
prevX=x;
prevY=y;
浮点距离=(浮点)数学sqrt((双精度)(dx*dx+dy*dy));
浮动角度=距离*旋转系数;
如果(dy>0){
渲染器。增加旋转角度(角度);
}否则{
渲染器。增加旋转角度(-angle);
}
this.requestRender();
}
返回true;
}
}
导入javax.microedition.khronos.egl.EGLConfig;
导入javax.microedition.khronos.opengles.GL10;
导入android.app.Activity;
导入android.opengl.GLSurfaceView.Renderer;
公共类MyRenderer扩展了活动实现渲染器{
私人三角三角;
专用浮动旋转角度=0;
私有整数级;
私人国际票据;
公共MyRenderer(int级别,int mFill)
{
这个水平=水平;
this.mFill=mFill;
mTriangle=新三角形(5,“线框”);
}
@凌驾
公共框架(GL10 gl){
gl.glClear(GL10.gl_颜色_缓冲_位| GL10.gl_深度_缓冲_位);
gl.glLoadIdentity();
gl.glRotatef(旋转角度,0,0,1);
M三角架(德国劳埃德船级社);
//TODO自动生成的方法存根
}
@凌驾
表面上的公共空隙已更改(GL10 gl,整型宽度,整型高度){
内特三角洲;
如果(宽度在下一行活动的onCreate()
创建MySurfaceView
类的实例。其构造函数(MySurfaceView(上下文上下文,MyRenderer渲染器)
)在行中设置一个渲染器
this.setRenderer(renderer);
因此,当您试图在活动的onCreate()
你得到了错误
这条线是多余的
this.setRenderer(renderer);
view.setRenderer(renderer);