利用Native.js跳转ios的系统定位界面

var NSURL = plus.ios.import('NSURL');
var UIApplicationClass = plus.ios.importClass("UIApplication");
var UIAppObj = UIApplicationClass.sharedApplication();
var req = UIAppObj.openURL(NSURL.URLWithString('UIApplicationOpenSettingsURLString'));
console.log(req);

为什么一直返回是false 跳转不过去呢