// xml中声明Real3dView，建议放在地图map上层，
                    <com.navinfo.navi.Real3dView
                        android:id="@+id/real3dView"
                        android:layout_width="match_parent"
                        android:layout_height=" match_parent "
                        android:layout_alignParentLeft="true"
                        android:layout_alignParentTop="true"
                        android:visibility="gone"/>
                    

                    // 使用
                    Real3dView real3dView= (Real3dView) findViewById(R.id.real3dView);
                    real3dView.addEventHandler(new Real3d.Listener() {
                        @Override
                        public void onReal3dEvent(int event) {
                            switch (event){
                                case Real3d.Real3dEvent.DID_APPEAR:
                                    //Real3d视图已经显示
                                    break;
                                case Real3d.Real3dEvent.DID_DISAPPEAR:
                                    //Real3d视图已经消失
                                    break;
                                case Real3d.Real3dEvent.NEEDS_DISPLAY:
                                    //刷新
                                    break;
                                case Real3d.Real3dEvent.WILL_APPEAR:
                                    //Real3d视图即将以渐现的方式显现
                                    break;
                                case Real3d.Real3dEvent.WILL_DISAPPEAR:
                                    //Real3d视图即将以渐失的方式离开
                                    break;
                            }
                        }
                    });