[morse]Ionic 檢查設備硬件功能是否已啟用或對應用程序可用

Install
    ionic cordova plugin add cordova.plugins.diagnostic
    npm install @ionic-native/diagnostic



Example 1:

import { Diagnostic } from '@ionic-native/diagnostic/ngx';
constructor(private diagnostic: Diagnostic) { }
...
let successCallback = (isAvailable) => { console.log('Is available? ' + isAvailable); }
let errorCallback = (e) => console.error(e);
this.diagnostic.isCameraAvailable().then(successCallback).catch(errorCallback);
this.diagnostic.isBluetoothAvailable().then(successCallback, errorCallback);

this.diagnostic.getBluetoothState()
.then((state) => {
    if (state == this.diagnostic.bluetoothState.POWERED_ON){
    // do something
    } else {
    // do something else
    }
}).catch(e => console.error(e));

Example 2:

app.module.ts

import { Diagnostic } from '@ionic-native/diagnostic/ngx';

@NgModule({

  providers: [

    Diagnostic

  ]

})

xxx.page.ts

  import { Diagnostic } from '@ionic-native/diagnostic/ngx';

  constructor(private _diagnostic: Diagnostic) { }

  

  Gpsstart() {

    // 檢查GPS

    this._diagnostic.isGpsLocationEnabled().then(

      (OnSuccess) => {

        if (OnSuccess){

          alert('GPS 開啟中');          

          this.showWatch();  

        }

        else{

          alert('GPS 沒開啟!');

          // 進入 GPS 啟用設定畫面

          this._diagnostic.switchToLocationSettings();  

        }

      },

      (OnFail) => {

        alert('GPS 檢查時出現錯誤!');

        this._totast.presentToastWithOptions('GPS 檢查時出現錯誤! '+ OnFail.message);

        //cordova.plugins.diagnostic.switchToLocationSettings();

      }

    ).catch(

      (OnError) => {

        this._totast.presentToastWithOptions('Catch error: ' + OnError.message);

      }

    );    

  }

  

  gpsWatch() {

    this.watchPosition = undefined;

    const options = {

      enableHighAccuracy: true,

      timeout: 5000,

      maximumAge: 0

    };

    this.gpsWatchId = this._geolocation.watchPosition(options).subscribe(

      (p) => {

        if (p) {

          this.watchPosition = p;

        }

        //alert(p.coords.latitude);

      },

      error => {

        // console.log('GPS Watch fail!');

        // console.error(error);

        // this._totast.presentToastWithOptions(error.message);

        alert(error.message);

      }

    );

  }

referance :

如何檢查是否啟用了gps

https://stackoverflow.com/questions/35304103/phonegap-how-to-check-if-gps-is-enabled

診斷-檢查設備硬件功能是否已啟用或對應用程序可用，例如相機，GPS，WiFi

https://ionicframework.com/docs/native/diagnostic