本文介绍了类型"BackgroundGeolocation"上不存在属性"on"的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个Ionic项目，当前正在使用Cordova背景地理定位插件.
I have an Ionic project and currently using Cordova background geolocation plugin.
我安装了此v3.0插件，并希望使用on函数来监听事件活动".
I installed this plugin of v3.0 and want to use the on function to listen the event 'activity'.
下面是我的代码:
import { Injectable, NgZone } from '@angular/core';
import { BackgroundGeolocation, BackgroundGeolocationConfig, BackgroundGeolocationResponse } from '@ionic-native/background-geolocation';
@Injectable()
export class LocationTrackerProvider {
public watch: any;
public lat: number = 0;
public lng: number = 0;
constructor(public zone: NgZone,
public backgroundGeolocation: BackgroundGeolocation,
) {
}
startTracking() {
let config: BackgroundGeolocationConfig = {
desiredAccuracy: 0,
stationaryRadius: 10,
startForeground: true,
distanceFilter: 10,
debug: false,
interval: 2000
};
this.backgroundGeolocation.configure(config).subscribe((location: BackgroundGeolocationResponse) => {
console.log('BackgroundGeolocation: ' + location.latitude + ',' + location.longitude + ',' + location.time);
});
}, (err) => {
console.log(err);
});
(this.backgroundGeolocation as any).on('activity', function(activity){
console.log("Activity Event On! type is:" + activity.type + "; confidence is:" + activity.confidence);
})
console.log('startTracking');
this.backgroundGeolocation.start();
}
stopTracking() {
console.log('stopTracking');
this.backgroundGeolocation.finish();
}
}
但是当我跑步
ionic Cordova run android
我收到以下错误消息:
Property 'on' does not exist on type 'BackgroundGeolocation'.
我检查了v3.0.0插件的源代码，发现有一个定义为'on'函数的属性.我不知道为什么会发生此错误?你能帮忙吗?
I check the v3.0.0 plugin source and see there is a property of 'on' function defined. I don't know why this error happens? Can you help?
作为参考， config.xml 和Ionic版本如下:
As the references, the config.xml and Ionic version are as below:
<?xml version='1.0' encoding='utf-8'?>
<widget id="io.ionic.starter" version="0.0.1" xmlns="http://www.w3.org/ns/widgets" xmlns:cdv="http://cordova.apache.org/ns/1.0">
<name>MyApp</name>
<description>An awesome Ionic/Cordova app.</description>
<author email="hi@ionicframework" href="http://ionicframework.com/">Ionic Framework Team</author>
<content src="index.html" />
<access origin="*" />
<allow-intent href="http://*/*" />
<allow-intent href="https://*/*" />
<allow-intent href="tel:*" />
<allow-intent href="sms:*" />
<allow-intent href="mailto:*" />
<allow-intent href="geo:*" />
<preference name="ScrollEnabled" value="false" />
<preference name="android-minSdkVersion" value="19" />
<preference name="BackupWebStorage" value="none" />
<preference name="SplashMaintainAspectRatio" value="true" />
<preference name="FadeSplashScreenDuration" value="300" />
<preference name="SplashShowOnlyFirstTime" value="false" />
<preference name="SplashScreen" value="screen" />
<preference name="SplashScreenDelay" value="3000" />
<platform name="android">
<allow-intent href="market:*" />
<icon density="ldpi" src="resources/android/icon/drawable-ldpi-icon.png" />
<icon density="mdpi" src="resources/android/icon/drawable-mdpi-icon.png" />
<icon density="hdpi" src="resources/android/icon/drawable-hdpi-icon.png" />
<icon density="xhdpi" src="resources/android/icon/drawable-xhdpi-icon.png" />
<icon density="xxhdpi" src="resources/android/icon/drawable-xxhdpi-icon.png" />
<icon density="xxxhdpi" src="resources/android/icon/drawable-xxxhdpi-icon.png" />
<splash density="land-ldpi" src="resources/android/splash/drawable-land-ldpi-screen.png" />
<splash density="land-mdpi" src="resources/android/splash/drawable-land-mdpi-screen.png" />
<splash density="land-hdpi" src="resources/android/splash/drawable-land-hdpi-screen.png" />
<splash density="land-xhdpi" src="resources/android/splash/drawable-land-xhdpi-screen.png" />
<splash density="land-xxhdpi" src="resources/android/splash/drawable-land-xxhdpi-screen.png" />
<splash density="land-xxxhdpi" src="resources/android/splash/drawable-land-xxxhdpi-screen.png" />
<splash density="port-ldpi" src="resources/android/splash/drawable-port-ldpi-screen.png" />
<splash density="port-mdpi" src="resources/android/splash/drawable-port-mdpi-screen.png" />
<splash density="port-hdpi" src="resources/android/splash/drawable-port-hdpi-screen.png" />
<splash density="port-xhdpi" src="resources/android/splash/drawable-port-xhdpi-screen.png" />
<splash density="port-xxhdpi" src="resources/android/splash/drawable-port-xxhdpi-screen.png" />
<splash density="port-xxxhdpi" src="resources/android/splash/drawable-port-xxxhdpi-screen.png" />
</platform>
<platform name="ios">
<allow-intent href="itms:*" />
<allow-intent href="itms-apps:*" />
<icon height="57" src="resources/ios/icon/icon.png" width="57" />
<icon height="114" src="resources/ios/icon/[email protected]" width="114" />
<icon height="40" src="resources/ios/icon/icon-40.png" width="40" />
<icon height="80" src="resources/ios/icon/[email protected]" width="80" />
<icon height="120" src="resources/ios/icon/[email protected]" width="120" />
<icon height="50" src="resources/ios/icon/icon-50.png" width="50" />
<icon height="100" src="resources/ios/icon/[email protected]" width="100" />
<icon height="60" src="resources/ios/icon/icon-60.png" width="60" />
<icon height="120" src="resources/ios/icon/[email protected]" width="120" />
<icon height="180" src="resources/ios/icon/[email protected]" width="180" />
<icon height="72" src="resources/ios/icon/icon-72.png" width="72" />
<icon height="144" src="resources/ios/icon/[email protected]" width="144" />
<icon height="76" src="resources/ios/icon/icon-76.png" width="76" />
<icon height="152" src="resources/ios/icon/[email protected]" width="152" />
<icon height="167" src="resources/ios/icon/[email protected]" width="167" />
<icon height="29" src="resources/ios/icon/icon-small.png" width="29" />
<icon height="58" src="resources/ios/icon/[email protected]" width="58" />
<icon height="87" src="resources/ios/icon/[email protected]" width="87" />
<icon height="1024" src="resources/ios/icon/icon-1024.png" width="1024" />
<splash height="1136" src="resources/ios/splash/Default-568h@2x~iphone.png" width="640" />
<splash height="1334" src="resources/ios/splash/Default-667h.png" width="750" />
<splash height="2208" src="resources/ios/splash/Default-736h.png" width="1242" />
<splash height="1242" src="resources/ios/splash/Default-Landscape-736h.png" width="2208" />
<splash height="1536" src="resources/ios/splash/Default-Landscape@2x~ipad.png" width="2048" />
<splash height="2048" src="resources/ios/splash/Default-Landscape@~ipadpro.png" width="2732" />
<splash height="768" src="resources/ios/splash/Default-Landscape~ipad.png" width="1024" />
<splash height="2048" src="resources/ios/splash/Default-Portrait@2x~ipad.png" width="1536" />
<splash height="2732" src="resources/ios/splash/Default-Portrait@~ipadpro.png" width="2048" />
<splash height="1024" src="resources/ios/splash/Default-Portrait~ipad.png" width="768" />
<splash height="960" src="resources/ios/splash/Default@2x~iphone.png" width="640" />
<splash height="480" src="resources/ios/splash/Default~iphone.png" width="320" />
<splash height="2732" src="resources/ios/splash/Default@2x~universal~anyany.png" width="2732" />
</platform>
<engine name="android" spec="6.3.0" />
<plugin name="cordova-plugin-ble-central" spec="^1.2.2" />
<plugin name="cordova-plugin-whitelist" spec="^1.3.3" />
<plugin name="cordova-plugin-device" spec="^2.0.2" />
<plugin name="cordova-plugin-splashscreen" spec="^5.0.2" />
<plugin name="cordova-plugin-ionic-webview" spec="^2.1.0" />
<plugin name="cordova-plugin-ionic-keyboard" spec="^2.1.2" />
<plugin name="cordova-plugin-geolocation" spec="^4.0.1">
<variable name="GEOLOCATION_USAGE_DESCRIPTION" value="To locate you" />
</plugin>
<plugin name="cordova-plugin-nativestorage" spec="^2.3.2" />
<plugin name="cordova-sqlite-storage" spec="^2.4.0" />
<plugin name="cordova-plugin-statusbar" spec="^2.4.2" />
<plugin name="cordova-plugin-googlemaps" spec="^2.4.2">
<variable name="API_KEY_FOR_ANDROID" value="xxxxxxxxxxxxxxxxxxxx" />
<variable name="API_KEY_FOR_IOS" value="xxxxxxxxxxxxxxxxxxx" />
<variable name="PLAY_SERVICES_VERSION" value="15.0.1" />
<variable name="ANDROID_SUPPORT_V4_VERSION" value="27.+" />
</plugin>
<plugin name="cordova-plugin-bluetooth-serial" spec="^0.4.7" />
<plugin name="cordova-plugin-network-information" spec="^2.0.1" />
<plugin name="cordova-plugin-networkinterface" spec="^2.0.0" />
<plugin name="uk.co.workingedge.phonegap.plugin.launchnavigator" spec="^4.2.2">
<variable name="OKHTTP_VERSION" value="3.+" />
</plugin>
<plugin name="cordova-plugin-background-mode" spec="^0.7.2" />
<plugin name="cordova-plugin-mauron85-background-geolocation" spec="^3.0.0-alpha.43">
<variable name="GOOGLE_PLAY_SERVICES_VERSION" value="11+" />
<variable name="ANDROID_SUPPORT_LIBRARY_VERSION" value="23+" />
<variable name="ALWAYS_USAGE_DESCRIPTION" value="App requires background tracking enabled" />
<variable name="MOTION_USAGE_DESCRIPTION" value="App requires motion detection" />
</plugin>
</widget>
科尔多瓦版本为7.1.0Android平台版本是6.3.0离子版本为4.1.1
Cordova version is 7.1.0Android platform version is 6.3.0Ionic version is 4.1.1
推荐答案
如果您将ionic和angular一起使用，请按照导入导入Cordova插件的常规方法进行操作-
If you are using ionic along with angular, please follow the norms as always for importing Cordova plugins -
第1步-安装插件-
ionic cordova plugin add @mauron85/cordova-plugin-background-geolocation
npm install @ionic-native/background-geolocation
第2步-导入app.module.ts-
Step 2 - Importing in app.module.ts -
从'@ ionic-native/background-geolocation/ngx'导入{BackgroundGeolocation};
第3步-导入所需的component.ts-
Step 3 - Importing in desired component.ts -
import {BackgroundGeolocation，BackgroundGeolocationConfig，来自'@ ionic-native/background-geolocation/ngx'的BackgroundGeolocationResponse}；
这篇关于类型"BackgroundGeolocation"上不存在属性"on"的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！