// 隐藏缩放控件                 int childCount = mMapView.getChildCount();                 View zoom = null;                 for (int i = 0; i < childCount; i++) {                         View child = mMapView.getChildAt(i);                         if (child instanceof ZoomControls) {                                 zoom = child;                                 break;                         }                 }                 zoom.setVisibility(View.GONE);                   // 隐藏比例尺控件                 int count = mMapView.getChildCount();                 View scale = null;                 for (int i = 0; i < count; i++) {                         View child = mMapView.getChildAt(i);                         if (child instanceof ZoomControls) {                                 scale = child;                                 break;                         }                 }                 scale.setVisibility(View.GONE);                   // 隐藏指南针                 mUiSettings = mBaiduMap.getUiSettings();                 mUiSettings.setCompassEnabled(true);                 // 删除百度地图logo                 mMapView.removeViewAt(1);