ios获取idfa

if (uni.getSystemInfoSync().platform == 'ios') {
				var NSUUID = plus.ios.importClass('NSUUID');
				var UIDevice = plus.ios.importClass("UIDevice");
				var currentDevice = UIDevice.currentDevice()
				var identifierForVendor = currentDevice.identifierForVendor().UUIDString();
				var ASIdentifierManager = plus.ios.importClass("ASIdentifierManager");
				var sharedManager = ASIdentifierManager.sharedManager();
				if (sharedManager.isAdvertisingTrackingEnabled()) {
					var advertisingIdentifier = sharedManager.advertisingIdentifier();
					var idfa2 = plus.ios.invoke(advertisingIdentifier, "UUIDString");
				}
				// var result = {'idfa':idfa,'idfv':identifierForVendor}
				// uni.showToast({
				// 	title: "2-idfa:" + idfa2,
				// 	position: 'center',
				// 	duration: 2500
				// });
			}