docs.sheetjs.com/docz/docs/03-demos/02-mobile/04-ionic.md

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Ionic	demos/frontend/index	demos/desktop/index	4	summary Native Components + Web View

The NodeJS Module can be imported from the main entrypoint or any script in the project.

:::warning Telemetry

Before starting this demo, manually disable telemetry. On Linux and MacOS:

rm -rf ~/.ionic/
mkdir ~/.ionic
cat <<EOF > ~/.ionic/config.json
{
  "version": "6.20.1",
  "telemetry": false,
  "npmClient": "npm"
}
EOF
npx @capacitor/cli telemetry off

To verify telemetry was disabled:

npx @ionic/cli config get -g telemetry
npx @capacitor/cli telemetry

:::

Cordova

:::caution

The latest version of Ionic uses CapacitorJS. These notes are for Cordova apps.

:::

Array<Array<any>> neatly maps to a table with ngFor:

<ion-grid>
  <ion-row *ngFor="let row of data">
    <ion-col *ngFor="let val of row">
      {{val}}
    </ion-col>
  </ion-row>
</ion-grid>

@ionic-native/file reads and writes files on devices. readAsArrayBuffer returns ArrayBuffer objects suitable for array type, and array type can be converted to blobs that can be exported with writeFile:

/* read a workbook */
const ab: ArrayBuffer = await this.file.readAsArrayBuffer(url, filename);
const wb: XLSX.WorkBook = XLSX.read(bstr, {type: 'array'});

/* write a workbook */
const wbout: ArrayBuffer = XLSX.write(wb, { bookType: 'xlsx', type: 'array' });
let blob = new Blob([wbout], {type: 'application/octet-stream'});
this.file.writeFile(url, filename, blob, {replace: true});

Demo

:::note

This demo was tested on an Intel Mac on 2022 August 18 with Cordova. The file integration uses @ionic-native/file version 5.36.0.

The iOS simulator runs iOS 15.5 on an iPod Touch 7th Gen.

:::

Complete Example (click to show)

0. Disable telemetry as noted in the warning.

Install required global dependencies:

npm i -g cordova-res @angular/cli native-run

Follow the React Native demo to ensure iOS and Android sims are ready.

1. Create a new project:

npx @ionic/cli start SheetJSIonic blank --type angular --cordova --quiet --no-git --no-link --confirm

If a prompt discusses Cordova and Capacitor, enter Yes to continue.

If a prompt asks about creating an Ionic account, enter N to opt out.

2. Set up Cordova:

npx @ionic/cli cordova platform add ios --confirm
npx @ionic/cli cordova plugin add cordova-plugin-file
npm install --save @ionic-native/core @ionic-native/file @ionic/cordova-builders

3. Install dependencies:

npm install --save https://cdn.sheetjs.com/xlsx-latest/xlsx-latest.tgz

4. Add @ionic-native/file to the module. Differences highlighted below:

import { AppComponent } from './app.component';
import { AppRoutingModule } from './app-routing.module';

// highlight-next-line
import { File } from '@ionic-native/file/ngx';

@NgModule({
  declarations: [AppComponent],
  imports: [BrowserModule, IonicModule.forRoot(), AppRoutingModule],

  // highlight-next-line
  providers: [File, { provide: RouteReuseStrategy, useClass: IonicRouteStrategy }],
  bootstrap: [AppComponent],
})
export class AppModule {}

5. Download home.page.ts and replace:

curl -o src/app/home/home.page.ts -L https://docs.sheetjs.com/ionic/home.page.ts

6. Test the app:

npx @ionic/cli cordova emulate ios