Saj*_*ran 4 google-maps geocoding angular
我是 angular2 的新手，并试图使用该位置找到坐标（纬度，经度）。
这是我的代码，
地理服务.ts
import { Injectable } from '@angular/core';
import { Http } from '@angular/http';
import 'rxjs/add/operator/map';
import 'rxjs/add/operator/toPromise';
@Injectable()
export class GeoService {
constructor(private http: Http) { }
getLocation(term: string) {
return this.http.get('http://maps.google.com/maps/api/geocode/json?address=' + term + 'CA&sensor=false').map
((response) => response.json());
}
// tslint:disable-next-line:eofline
}
应用程序组件.html
<!DOCTYPE HTML>
<h1> {{title}} </h1>
<input type="text" [(ngModel)]="location" />
<button (click)="findLocation($event)">Find location</button>
<sebm-google-map
[latitude]="lat"
[longitude]="lng"
[zoom]="zoom"
[disableDefaultUI]="false"
[zoomControl]="false"
(mapClick)="mapClicked($event)">
<sebm-google-map-marker
*ngFor="let m of markers; let i = index"
(markerClick)="clickedMarker(m.label, i)"
[latitude]="m.lat"
[longitude]="m.lng"
[label]="m.label"
[markerDraggable]="m.draggable"
(dragEnd)="markerDragEnd(m, $event)">
<sebm-google-map-info-window>
<strong>InfoWindow content</strong>
</sebm-google-map-info-window>
</sebm-google-map-marker>
<sebm-google-map-circle [latitude]="lat + 0.3" [longitude]="lng"
[radius]="5000"
[fillColor]="'red'"
[circleDraggable]="true"
[editable]="true">
</sebm-google-map-circle>
</sebm-google-map>
app.component.ts
import { Component } from '@angular/core';
import { GeoService } from './GeoService';
@Component({
selector: 'my-app',
moduleId: module.id,
templateUrl: `./app.component.html`,
styleUrls: ['/app.componenet.css'],
providers :[GeoService]
})
export class AppComponent {
title = 'Angular2 google map test';
lat: number = 51.673858;
lng: number = 7.815982;
zoom: number = 8;
markers: marker[] = [
{
lat: 51.673858,
lng: 7.815982,
label: 'A',
draggable: true
},
{
lat: 51.373858,
lng: 7.215982,
label: 'B',
draggable: false
},
{
lat: 51.723858,
lng: 7.895982,
label: 'C',
draggable: true
}
];
location: string;
findLocation(): void {
this.result= this.geoService.getLocation(this.location);
}
constructor(private geoService: GeoService) {
}
clickedMarker(label: string, index: number) {
}
mapClicked($event: MouseEvent) {
}
markerDragEnd(m: marker, $event: MouseEvent) {
console.log('dragEnd', m, $event);
}
}
// tslint:disable-next-line:class-name
interface marker {
lat: number;
lng: number;
label?: string;
draggable: boolean;
}
如何在 app.component.ts 中获取结果？
findLocation(): void {
this.result= this.geoService.getLocation(this.location);
}
小智 5
希望你不会仍然停留在这个问题上。虽然这可能不再对您有帮助，但希望它会对其他人有所帮助。这是我刚才所做的。首先将 getLocation 函数更改为此。这是针对当前的 Angular2 版本。
getLocation(term: string):Promise<any> {
return this.http.get('http://maps.google.com/maps/api/geocode/json?address=' + term + 'CA&sensor=false')
.toPromise()
.then((response) => Promise.resolve(response.json()));
.catch((error) => Promise.resolve(error.json()));
}
然后在 app.component.ts 中，将其更改为这个。
findLocation(): void {
this.geoService.getLocation(this.location)
.then((response) => this.result = response.results[0])
.catch((error) => console.error(error));
}
我添加了一些错误控制，因为这总是很好。我在响应中返回了一个结果数组，因此如果返回的地址不止一个，请向用户说明他们想要哪个地址。
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