android ontouchevent opengl

Question

我为我的android游戏使用opengl es。我想抓住x和y的位置。我跟着一堆不同的教程，一切都会导致相同的结果：我无法从中得到任何东西。这个方法甚至不是我觉得奇怪的。所以，这里是我的GLSurfaceView类

class OpenGLES10SurfaceView extends GLSurfaceView { 

    //private final float TOUCH_SCALE_FACTOR = 180.0f/320; 
    public OpenGLES10Renderer mRenderer; 
    //static private float mPreviousX; 
    //static private float mPreviousY; 
    private static float _x; 
    private static float _y; 

    public OpenGLES10SurfaceView(Context context){ 
     super(context); 

     // set the mRenderer member 
     mRenderer = new OpenGLES10Renderer(context); 
     setRenderer(mRenderer); 

     // Render the view only when there is a change 
     setRenderMode(GLSurfaceView.RENDERMODE_WHEN_DIRTY); 
    } 
    @Override 
     public boolean onTouchEvent(MotionEvent e) { 
      // MotionEvent reports input details from the touch screen 
      // and other input controls. In this case, you are only 
      // interested in events where the touch position changed. 

      float x = e.getX(); 
      float y = e.getY(); 

      switch (e.getAction()) { 
      case MotionEvent.ACTION_DOWN: 
             mRenderer.setX(x); 
             return true; 

      } 

    } 
    } 

我不能找到个到底是不对的，所以如果你能帮助这将极大地appriciated。如果您需要编码部分代码，请说明。

Answer 1

试试这个：

@Override 
public boolean onTouchEvent(MotionEvent event) { 

     float x = e.getX(); 
     float y = e.getY(); 

    switch (event.getAction() & MotionEvent.ACTION_MASK) { 
     case MotionEvent.ACTION_DOWN: 
      mRenderer.setX(x); 
      requestRender(); 
      break; 
     case MotionEvent.ACTION_UP:   
      break; 
     case MotionEvent.ACTION_POINTER_DOWN:    
      break; 
     case MotionEvent.ACTION_POINTER_UP: 
      break; 
     case MotionEvent.ACTION_MOVE:  
      break; 
    } 


    return true; 
    } 

我的情况下添加其他操作，你需要他们。希望有所帮助。