我在我的Ionic2应用程序中实现了图表。但是,当我尝试运行应用程序时,我会遇到错误Uncaught Error: Can't resolve all parameters for Chart: (?, ?)
。您能帮我解决这个问题吗?我使用了chart.js
库。
代码
export class ChartPage {
@ViewChild('barCanvas') barCanvas:ElementRef;
barChart: any;
constructor(public navCtrl: NavController) {
}
ionViewDidLoad() {
this.barChart = new Chart(this.barCanvas.nativeElement, {
type: 'bar',
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
datasets: [{
label: '# of Votes',
data: [12, 19, 3, 5, 2, 3],
backgroundColor: [
'rgba(255, 99, 132, 0.2)',
'rgba(54, 162, 235, 0.2)',
'rgba(255, 206, 86, 0.2)',
'rgba(75, 192, 192, 0.2)',
'rgba(153, 102, 255, 0.2)',
'rgba(255, 159, 64, 0.2)'
],
borderColor: [
'rgba(255,99,132,1)',
'rgba(54, 162, 235, 1)',
'rgba(255, 206, 86, 1)',
'rgba(75, 192, 192, 1)',
'rgba(153, 102, 255, 1)',
'rgba(255, 159, 64, 1)'
],
borderWidth: 1
}]
},
options: {
scales: {
yAxes: [{
ticks: {
beginAtZero:true
}
}]
}
}
});
}
从app.module.ts文件中删除'Chart.js'的声明以求解错误