我正在使用 Angular 和 ionic 开发本机移动应用程序,我正在尝试在页面上添加签名区域,但出现了一些错误
我添加了这个包:angular2-signaturepad
我正在关注本教程:https ://devdactic.com/signature-drawpad-ionic-2/
html内容:
<div class="title">Please draw your Signature</div>
<ion-row [ngClass]="{'drawing-active': isDrawing}">
<ion-col></ion-col>
<ion-col>
<signature-pad [options]="signaturePadOptions" (onBeginEvent)="drawStart()" (onEndEvent)="drawComplete()"></signature-pad>
</ion-col>
<ion-col></ion-col>
</ion-row>
<button ion-button full color="danger" (click)="clearPad()">Clear</button>
<button ion-button full color="secondary" (click)="savePad()">Save</button>
<ion-row>
<ion-col></ion-col>
<ion-col width-80>
<img [src]="signature"/>
</ion-col>
<ion-col></ion-col>
</ion-row>
page.ts 内容:
signature = '';
isDrawing = false;
import { SignaturePad } from 'angular2-signaturepad/signature-pad';
@ViewChild(SignaturePad) signaturePad: SignaturePad;
private signaturePadOptions: Object = {
minWidth: 2,
canvasWidth: 400,
canvasHeight: 200,
backgroundColor: '#f6fbff',
penColor: '#666a73'
};
ionViewDidEnter() {
this.signaturePad.clear()
this.storage.get('savedSignature').then((data) => {
this.signature = data;
});
}
drawComplete() {
this.isDrawing = false;
}
drawStart() {
this.isDrawing = true;
}
savePad() {
this.signature = this.signaturePad.toDataURL();
this.storage.set('savedSignature', this.signature);
this.signaturePad.clear();
}
clearPad() {
this.signaturePad.clear();
}
我的编辑器的这一行也有错误:
<signature-pad [options]="signaturePadOptions" (onBeginEvent)="drawStart()" (onEndEvent)="drawComplete()"></signature-pad>
错误: “签名垫”不是已知元素:
如果 'signature-pad' 是一个 Angular 组件,那么验证它是这个模块的一部分。
如果“signature-pad”是一个 Web 组件,则将“CUSTOM_ELEMENTS_SCHEMA”添加到该组件的“@NgModule.schemas”以禁止显示此消息。