android view内绘制NinePatch的方法

Bitmap bitmap=BitmapFactory.decodeResource(context.getResources(),R.drawable.feedback_content_header_bg);
//取得资源
NinePatch npd=new NinePatch(bitmap,bitmap.getNinePatchChunk(),null);

npd.draw(canvas,new Rect(0,0,canvas.getWidth(),canvas.getHeight()));