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Part 2 - Backend integration with Air pollution app - home.ts
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import { Component } from '@angular/core'; | |
import { NavController } from 'ionic-angular'; | |
import { Http } from '@angular/http'; | |
import 'rxjs/add/operator/toPromise'; | |
import { LoadingController } from 'ionic-angular'; | |
@Component({ | |
selector: 'page-home', | |
templateUrl: 'home.html' | |
}) | |
export class HomePage { | |
constructor(public loader: LoadingController, public navCtrl: NavController, public http: Http, ) { | |
this.http = http; | |
this.loader = loader; | |
this.aqi = { data: {} }; | |
this.reload(); | |
} | |
reload() { | |
let loading = this.loader.create({ | |
spinner: 'dots', | |
content: 'Loading', | |
duration: 60000 | |
}); | |
this.http.get(`https://api.waqi.info/feed/here/?token=demo`) | |
.toPromise() | |
.then(response => { | |
this.aqi = response.json(); | |
loading.dismiss(); | |
}) | |
.catch(error => { | |
loading.dismiss(); | |
console.log(error.json()) | |
let eloading = this.loader.create({ | |
content: 'Connectivity Issue!', | |
duration: 5000 | |
}); | |
eloading.present(); | |
}); | |
} | |
aqiStatus(val) { | |
if (val <= 50) { | |
return { code: 'good', val: 'Good' }; | |
} else if (val <= 100) { | |
return { code: 'mod', val: 'Moderate' }; | |
} else if (val <= 200) { | |
return { code: 'unhealthy', val: 'Unhealthy' }; | |
} if (val <= 300) { | |
return { code: 'vunhealthy', val: 'Very Unhealthy' }; | |
} else if (val > 300) { | |
return { code: 'hazardous', val: 'Hazardous' }; | |
} else { | |
return { code: '', val: '' } | |
} | |
} | |
} |
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