TypeError：无法读取 nativescript 中未定义的属性“cartesianChart”

Posted 2023-04-13

【中文标题】TypeError：无法读取 nativescript 中未定义的属性“cartesianChart”

【英文标题】：TypeError: Cannot read property 'cartesianChart' of undefined in nativescript

【发布时间】：2018-08-04 20:40:18

【问题描述】：

我是 nativescript 中的一个新功能。我尝试在 nativescript 中学习图表，但它给出了“TypeError: Cannot read property 'cartesianChart' of undefined”错误。

home.componet.html

<RadCartesianChart tkExampleTitle tkToggleNavButton>
<CategoricalAxis tkCartesianHorizontalAxis></CategoricalAxis>
<LinearAxis tkCartesianVerticalAxis></LinearAxis>
<LineSeries tkCartesianSeries [items]="categoricalSource" categoryProperty="Country" valueProperty="Amount"></LineSeries>

home.component.ts

    import  Component, OnInit,ViewChild,AfterViewInit ,ElementRef from '@angular/core';
import  WebView, LoadEventData  from "ui/web-view";
import  ObservableArray  from "tns-core-modules/data/observable-array";
importDataService from "../data.service"
importCountry from "../country"

@Component(
  moduleId: module.id,
  selector: 'app-home',
  providers: [DataService],
  templateUrl: './home.component.html',
  styleUrls: ['./home.component.scss']
)
export class HomeComponent implements OnInit 

  private _categoricalSource: ObservableArray<Country>;

  constructor(private _dataService: DataService)  

  get categoricalSource(): ObservableArray<Country> 
      return this._categoricalSource;
  

  ngOnInit() 
      this._categoricalSource = new ObservableArray(this._dataService.getCategoricalSource());
  

【参考方案1】：

我遇到了同样的问题，通过删除android平台并重新添加它来解决它。

tns platform remove android
tns platform add android