Ionic集成ArcGIS JavaScript API.md

1. Ionic同原生ArcGIS JavaScript API结合

1.1. 安装esri-loader

在工程目录下命令行安装:

npm install angular2-esri-loader esri-loader;

1.2. 构造地图Component

map.rar这个Component解压到pages文件夹下

这是一个实现参考,定义了一个地图展示Component。

ts代码

import { Component, OnInit, ViewChild, ElementRef } from '@angular/core';

import { EsriLoaderService } from 'angular2-esri-loader';

@Component({
selector: 'app-esri-map',
templateUrl: './esri-map.component.html'
})
export class EsriMapComponent implements OnInit {
map: any;
agoLayer: any;
constructor(private esriLoader: EsriLoaderService) { } ngOnInit() {
// only load the ArcGIS API for JavaScript when this component is loaded
return this.esriLoader.load({
// use a specific version of the API instead of the latest
url: 'http://10.10.70.85:6090/arcgis_js_api/library/3.20/3.20/init.js'
}).then(() => {
// load the map class needed to create a new map
this.esriLoader.loadModules(["esri/map", "esri/layers/ArcGISTiledMapServiceLayer"]).then(([Map, ArcGISTiledMapServiceLayer]) => {
// create the map at the DOM element in this component
this.map = new Map("mapDiv");
let agoServiceURL = "http://10.10.70.176:6080/arcgis/rest/services/clzhgwnew/cldx/MapServer";
this.agoLayer = new ArcGISTiledMapServiceLayer(agoServiceURL);
this.map.addLayer(this.agoLayer);
});
});
}
}

template代码

<div id="mapDiv"></div>

1.3. 在app.module.ts中增加引用

import { EsriLoaderService } from 'angular2-esri-loader';
import { EsriMapComponent } from '../pages/map/esri-map.component';
@NgModule({
declarations: [
...
EsriMapComponent,
...
],
imports: [
...
],
bootstrap: [IonicApp],
entryComponents: [
...
EsriMapComponent,
...
],
providers: [
...
EsriLoaderService,
...
]
})
export class AppModule { }

1.4. 增加相关的CSS引用

index.html中增加如下CSS的引用:

<link rel="stylesheet" href="http://10.10.70.85:6090/arcgis_js_api/library/3.20/3.20/esri/css/esri.css" />

1.5. 地图Component测试

随便找个页面增加如下标签即可显示地图:

...
<app-esri-map></app-esri-map>
...

2. 同自己封装的Dojo组件集成

这里的主要问题是Dojo的组件是基于AMD的模块加载机制进行编写和加载的,主要解决的是Dojo的模块发现和加载。

需要基于第1节中的描述,增加如下配置:

2.1 模块发现

模块发现,还是借助于Dojo的dojoConifg配置项,在index.html<head>中增加配置项的内容:

<script>
var dojoConfig = {
parseOnLoad:false,
packages: [
{
"name": "must",
"location": "/assets/gis/must"
},
{
"name": "modules",
"location": "/assets/gis/modules"
}
]
};
</script>

这样需要将自己定义的Dojo组件拷贝到src/assets/下的gis`目录下(手工新建目录即可),实现自动同步。

2.1 组件加载

然后就借助于1.2节中的描述,使用esriLoader进行组件加载即可,代码示例如下:

ngOnInit() {
// only load the ArcGIS API for JavaScript when this component is loaded
return this.esriLoader.load({
// use a specific version of the API instead of the latest
url: 'http://10.10.70.85:6090/arcgis_js_api/library/3.20/3.20/init.js'
}).then(() => {
// load the map class needed to create a new map
this.esriLoader.loadModules(["esri/map",
"must/LoadMap",
"esri/geometry/Point",
"must/Toolbar",
"must/mapHandle/MapHandle"]).then(([Map, LoadMap, Point, Toolbar, MapHandle]) => {
//创建右侧工具栏
var mapTool = new MapHandle();
this.gis.loadMap = new LoadMap("mapDiv", mapTool);
var map = this.gis.loadMap.getMap();
this.gis.toolbar = new Toolbar(map);
map.on('load', function () { });
});
});
}
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