/** @param level value range 3~20 */ public void setZoomLevel(float level) { if (aMap != null) { if (level < aMap.getMinZoomLevel()) { level = aMap.getMinZoomLevel(); } else if (level > aMap.getMaxZoomLevel()) { level = aMap.getMaxZoomLevel(); } aMap.moveCamera(CameraUpdateFactory.zoomTo(level)); } }