COCOS 2D屏幕截图在Android中是黑色的

我正在使用以下代码.图像被保存,但它是黑色的.
请看我的代码,告诉我我做错了什么.
我在菜单中使用这个代码.

case R.id.id_menu_Save:

            Bitmap bmp = SavePixels(0,800,400,CCDirector.sharedDirector().gl);

            File file = new File("/sdcard/test.jpg");
            try
            {
                file.createNewFile();
                FileOutputStream fos = new FileOutputStream(file);
                bmp.compress(CompressFormat.JPEG,100,fos);

                Toast.makeText(getApplicationContext(),"Image Saved",0).show();
                Log.i("Menu Save Button","Image saved as JPEG");
            }

            catch (Exception e)
            {
                e.printStackTrace();
            }

            break;

这是我的保存图像功能.

public static Bitmap SavePixels(int x,int y,int w,int h,GL10 gl)
{  
     int b[]=new int[w*(y+h)];
     int bt[]=new int[w*h];
     IntBuffer ib=IntBuffer.wrap(b);
     ib.position(0);
     gl.glReadPixels(x,w,y+h,GL10.GL_RGBA,GL10.GL_UNSIGNED_BYTE,ib);

     for(int i=0,k=0; i<h; i++,k++)
     {//remember,that OpenGL bitmap is incompatible with Android bitmap
      //and so,some correction need.        
          for(int j=0; j<w; j++)
          {
               int pix=b[i*w+j];
               int pb=(pix>>16)&0xff;
               int pr=(pix<<16)&0x00ff0000;
               int pix1=(pix&0xff00ff00) | pr | pb;
               bt[(h-k-1)*w+j]=pix1;
          }
     }

    Bitmap sb = Bitmap.createBitmap(bt,h,Bitmap.Config.ARGB_8888); 
    return sb;
}

除此之外,我想要的是指出我的方向正确.喜欢如果我得到屏幕的像素,我应该探索什么类/实体？

只需将SavePixelx方法更改为：

public static Bitmap SavePixels(int x,k++)
     {
          //remember,that OpenGL bitmap is incompatible with Android bitmap
          //and so,some correction need.        
          for(int j=0; j<w; j++)
          {
               int pix=b[i*w+j];
               int pb=(pix>>16)&0xff;
               int pr=(pix<<16)&0xffff0000;
               int pix1=(pix&0xff00ff00) | pr | pb;
               bt[(h-k-1)*w+j]=pix1;
          }
     }

    Bitmap sb = Bitmap.createBitmap(bt,Bitmap.Config.ARGB_8888); 
    return sb;
}

COCOS 2D屏幕截图在Android中是黑色的

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