在我使用 Ionic 3 开发的应用程序中,我使用 npm 包 angular2-baidu-map用于显示中国大陆 map 。
我有一个百度 map 的 API key (用于 JS API),并且该 map 在浏览器中工作正常(即 ionicserve -l
),但是一旦编译并安装在真实设备, map 未显示。
经过一些调试后,发现无论我在协议(protocol)
中设置什么,API都会向file://api.map.baidu.com
发送请求> map 初始化选项。
例如,Safari 开发者工具的控制台会记录一些许多消息,例如:
The requested URL was not found on this server. file://api.map.baidu.com/api?v=2.0&ak=...&callback=baidumapinit&s=0 Failed to load resource: The requested URL was not found on this server.
编辑:添加代码
基本上我只是用演示代码尝试了这个插件。但是,为了完整起见,就在这里。
HTML 代码
<ion-header>
<ion-navbar>
<button ion-button menuToggle>
<ion-icon name="menu"></ion-icon>
</button>
<ion-title>Baidu map</ion-title>
</ion-navbar>
</ion-header>
<ion-content>
<baidu-map ak="{{ak}}"
[options]="opts" [offline]="offlineOpts"
(onMapLoaded)="loadMap($event)"
(onMarkerClicked)="clickMarker($event)"
(onClicked)="clickMap($event)"></baidu-map>
</ion-content>
typescript
map-baidu.module.ts
import { NgModule } from '@angular/core';
import { IonicPageModule } from 'ionic-angular';
import { MapBaiduPage } from './map-baidu';
import { TranslateModule } from '@ngx-translate/core';
import { BaiduMapModule } from 'angular2-baidu-map';
@NgModule({
declarations: [
MapBaiduPage,
],
imports: [
IonicPageModule.forChild(MapBaiduPage),
TranslateModule.forChild(),
BaiduMapModule
],
})
export class MapBaiduPageModule {}
map -baidu.ts
import { Component } from '@angular/core';
import { IonicPage, NavController, NavParams } from 'ionic-angular';
import { OfflineOptions, ControlAnchor, NavigationControlType } from 'angular2-baidu-map';
@IonicPage()
@Component({
selector: 'page-map-baidu',
templateUrl: 'map-baidu.html',
})
export class MapBaiduPage {
public ak:string = '<your Baidu JS API key here>';
opts: any;
offlineOpts: OfflineOptions;
constructor(public navCtrl: NavController, public navParams: NavParams) { }
ionViewDidLoad() {
console.log('ionViewDidLoad MapBaiduPage');
}
loadMap(map:any){
console.log('> loadMap:', map);
}
clickMap(e:any){
console.log('> clickMap:', e.point.lat, e.point.lng);
}
clickMarker(marker:any){
console.log('> clickMarker:', marker);
}
ngOnInit() {
this.opts = {
// protocol:'https:', // changes nothing
center: {
longitude: 121.506191,
latitude: 31.245554
},
zoom: 12,
markers: [{
longitude: 121.506191,
latitude: 31.245554,
title: 'Where',
content: 'Put description here',
enableDragging: true
}],
geolocationCtrl: {
anchor: ControlAnchor.BMAP_ANCHOR_BOTTOM_RIGHT
},
scaleCtrl: {
anchor: ControlAnchor.BMAP_ANCHOR_BOTTOM_LEFT
},
overviewCtrl: {
isOpen: true
},
navCtrl: {
type: NavigationControlType.BMAP_NAVIGATION_CONTROL_LARGE
}
};
this.offlineOpts = {
retryInterval: 5000,
txt: "Network unavailable"
};
}
}
有什么想法吗?
最佳答案
好的,我查看了 sourcecode这就是组件决定使用哪个协议(protocol)的方式:
export var loader = function (ak, offlineOpts, callback, protocol) {
var realProtocol = protocol || location.protocol;
因此,如果没有传递协议(protocol),它将使用提供页面的协议(protocol)(如果是 ionic,则为 file://,如果是 WKWebview localhost://)。
现在,您在问题中说您尝试传递不同的协议(protocol),但查看您的代码,您将其作为 opts
对象的属性传递。但如果你看一下百度 map 组件,它期望该协议(protocol)作为单独的@Input:
export class BaiduMap implements OnInit, OnChanges {
@Input() ak: string;
@Input() protocol: string;
@Input() options: MapOptions;
因此您需要按如下方式更改组件模板:
<baidu-map ak="{{ak}}"
[options]="opts"
[offline]="offlineOpts"
[protocol]="'https'" // not sure about the extra quotation marks
(onMapLoaded)="loadMap($event)"
(onMarkerClicked)="clickMarker($event)"
(onClicked)="clickMap($event)">
</baidu-map>
关于angular - ionic 3 : Baidu map working only in browser,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/45943364/