Ionic 3 如何知道 GPS 是否启用

Question

我正在使用 Ionic 3 并且在需要跟随用户位置的页面中（仅纬度和经度）。我如何知道 GPS 是否启用以及我如何知道用户是否通过 android 控制面板禁用了 GPS？

这是我的代码：

this.geolocation.watchPosition({enableHighAccuracy : true,maximumAge:0}).filter((p: any) => p.code === undefined).subscribe((position: Geoposition)=>{
    this.latitude = position.coords.latitude;
    this.longitude = position.coords.longitude;  
});

Answer 1

使用 android 权限 https://ionicframework.com/docs/native/android-permissions/

this.geolocation.watchPosition({enableHighAccuracy : true,maximumAge:0}).filter((p: any) => p.code === undefined).subscribe((position: Geoposition)=>{
   this.androidPermissions.checkPermission(this.androidPermissions.PERMISSION.ACCESS_COARSE_LOCATION).then(
     result => console.log('Has permission?',result.hasPermission),
     err => this.androidPermissions.requestPermission(this.androidPermissions.PERMISSION.ACCESS_COARSE_LOCATION)
   );
   this.latitude = position.coords.latitude;
   this.longitude = position.coords.longitude;  
});

Ionic 3 如何知道 GPS 是否启用

Ionic 3 How to know if GPS is enable

android

geolocation

ionic-framework