list.getLength(); i++){ Element element = (Element) node;03-24 01:50:55.293: E/AndroidRuntime(1097): java.lang.NullPointerExceptionandroid.util.Log.println_
$000(SurfaceView.java:86)上调用空对象引用上的虚拟方法'java.lang.Object java.lang.NullPointerException.view.SurfaceView$3.onPreDraw(SurfaceView.java:175) at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java(ViewRootImpl.java:1019) at an