在ionic 3中使用getcurrentlocation时出错

<platform name="android">
    <allow-intent href="market:*" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
</platform>

ionic cordova plugin add cordova-plugin-geolocation
npm install @ionic-native/geolocation

import { Geolocation } from '@ionic-native/geolocation/ngx';

constructor(private geolocation: Geolocation) { }

...

this.geolocation.getCurrentPosition().then((resp) => {
    // 处理获取到的位置信息
}).catch((error) => {
    console.log('Error getting location', error);
});

ionic cordova plugin add cordova-plugin-device
npm install @ionic-native/device

import { Device } from '@ionic-native/device/ngx';

constructor(private device: Device) { }

...

if (this.device.platform === 'Android' || this.device.platform === 'iOS') {
    // 执行获取位置的代码
} else {
    console.log('Device does not support location');
}