I am currently developing a multilingual Ionic 4 app and have implemented the alert controller to display language options. However, I am facing an issue on how to dynamically change the language based on user selection.
Below is my app.component.ts code snippet:
language: any = 'en';
constructor(private translate: TranslateService) {
this.initializeApp();
}
initializeApp() {
this.platform.ready().then(() => {
this.translate.addLangs(['en', 'fr']);
this.translate.setDefaultLang('en');
const browserLang = this.translate.getBrowserLang();
this.translate.use(browserLang.match(/en|fr/) ? browserLang : 'en');
});
}
async changeLanguage() {
const alert = await this.alertController.create({
header: 'Language',
inputs: [{
type: 'radio',
label: 'English',
value: 'en',
checked: this.language === 'en'
}, {
type: 'radio',
label: 'French',
value: 'fr',
checked: this.language === 'fr'
}],
buttons: [{
text: 'Cancel'
}, {
text: 'OK',
handler: selectedLanguage => {
this.language = selectedLanguage;
}
}]
});
await alert.present();
}
Here's the relevant section in app.component.html:
<button ion-button icon-end (click)="changeLanguage()">
<span>{{language | uppercase }}</span>
<ion-icon name="arrow-dropdown"></ion-icon>
</button>
Upon App launch, English is set as the default language and I aim to update it dynamically based on user's choice from the alert prompt.
The use of ngx-translate plugin has been integrated into the project structure.
Shown below is the configuration within app.module.ts:
import { TranslateModule, TranslateLoader } from '@ngx-translate/core';
import { TranslateHttpLoader } from '@ngx-translate/http-loader';
export function HttpLoaderFactory(httpClient: HttpClient) {
return new TranslateHttpLoader(httpClient, './assets/i18n/', '.json');
}
@NgModule({
imports: [
TranslateModule.forRoot({
loader: {
provide: TranslateLoader,
useFactory: HttpLoaderFactory,
deps: [HttpClient]
}
}) ],
})
The initial language preference is English.
To utilize the translation pipe {
{ 'ACCOUNT_TAB_LAB' | translate }}import { TranslateService } from '@ngx-translate/core';Any guidance or assistance would be greatly appreciated.