我用下面的代码来实现菜单栏的功能，但发现图片截屏保存后，却显示为黑色。请帮我看看代码，是哪个环节我写错了。
case R.id.id_menu_Save: Bitmap bmp = SavePixels(0, 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;下面是保存图片的功能代码：
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, 0, 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, w, h, Bitmap.Config.ARGB_8888); return sb;}除此之外，我还希望大家不吝赐教，指点我一条正确的方向。比如我想获取屏幕的像素，我需要应用到哪些类和实体呢？
解决方案
答案
jeet：只需要修改SavePixelx的方法，如下：
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, 0, 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)&0xffff0000; int pix1=(pix&0xff00ff00) | pr | pb; bt[(h-k-1)*w+j]=pix1; } } Bitmap sb = Bitmap.createBitmap(bt, w, h, Bitmap.Config.ARGB_8888); return sb;}