GLSurfaceview沒有獲取onTouch事件

Question

我已經遵循google的位於here的onTouch示例。但是，我的日誌裏沒有任何東西出來。據我所知，我的觀點並沒有提到任何觸摸事件。這是我的代碼：

package com.test; 

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

import android.app.Activity; 
import android.content.Context; 
import android.opengl.GLSurfaceView; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.MotionEvent; 
import android.view.View; 
import android.view.Window; 

public class intro extends Activity { 
    static{ 
     System.loadLibrary("graphrender"); 
    } 
    private GLSurfaceView mGLView; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     requestWindowFeature(Window.FEATURE_NO_TITLE); 
     mGLView = new GraphGLSurfaceView(this); 
     setContentView(mGLView); 

    } 

    @Override 
    protected void onPause() { 
     super.onPause(); 
     mGLView.onPause(); 
    } 

    @Override 
    protected void onResume() { 
     super.onResume(); 
     mGLView.onResume(); 
    } 
} 

class GraphGLSurfaceView extends GLSurfaceView { 
    GraphRenderer mRenderer;  
    public GraphGLSurfaceView(Context context) { 
     super(context); 
     mRenderer = new GraphRenderer(); 
     setRenderer(mRenderer); 

    } 
    public boolean onTouch(View v, MotionEvent event) 
    { 
     queueEvent(new Runnable(){ 
      public void run() { 
       mRenderer.shout(); 
      }}); 
      return true; 
    } 
} 

class GraphRenderer implements GLSurfaceView.Renderer { 
    private static native void nativeSetup(); 
    private static native void nativeSize(int w, int h); 
    private static native void nativeRender(); 


    private float _red = 0.9f; 
    private float _green = 0.2f; 
    private float _blue = 0.2f; 

    public void onSurfaceCreated(GL10 gl, EGLConfig config) { 
     nativeSetup(); 
     Log.d("intro", "Got to intro 4"); 
    } 

    public void onSurfaceChanged(GL10 gl, int w, int h) { 
     nativeSize(w,h); 
    } 

    public void onDrawFrame(GL10 gl) { 
     nativeRender(); 
    } 
    public void shout() 
    { 
     Log.d("Graph Page", "gotta graph"); 
    } 
} 

我能想到的唯一的事情就是我必須在XML文件中的東西花哨或設置其重點。任何幫助，將不勝感激。

Answer 1

那是因爲如果你看看GLSurfaceView的API，它實際上並沒有一個onTouch方法供你重寫。這意味着onTouch方法將永遠不會被調用，這可能解釋了爲什麼你永遠不會看到它正在運行。相反，如果你想獲得觸摸事件，那麼你應該改寫Activity中的onTouchEvent。像這樣：

public class Intro extends Activity { 
    static{ 
     System.loadLibrary("graphrender"); 
    } 
    private GLSurfaceView mGLView; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     requestWindowFeature(Window.FEATURE_NO_TITLE); 
     mGLView = new GraphGLSurfaceView(this); 
     setContentView(mGLView); 

    } 

    @Override 
    protected boolean onTouchEvent(MotionEvent event) { 
     Log.i("motion", event); 
     return true; 
    } 

    @Override 
    protected void onPause() { 
     super.onPause(); 
     mGLView.onPause(); 
    } 

    @Override 
    protected void onResume() { 
     super.onResume(); 
     mGLView.onResume(); 
    } 
} 

現在應該可以工作了。