Is there a way to prevent the default navigation when tapping the hardware back button? I attempted using registerBackButtonAction, but it ends up overriding the behavior of the back button on every page, which is not desired.
I also tried this method:
document.addEventListener("backbutton", (event) => {
event.preventDefault();
}, false);
According to the information provided in the Ionic documentation, the method registerBackButtonAction returns a function:
The function, when called, will unregister its back button action.
This function can be utilized to restore the default behavior upon leaving the page, as demonstrated below:
import { Component} from '@angular/core';
@Component({
selector: 'page-home',
templateUrl: 'home.html'
})
export class HomePage {
// Property to store the callback of the event handler for unsubscription upon leaving the page
public unregisterBackButtonAction: any;
constructor(...) { ... }
ionViewDidEnter() {
this.initializeBackButtonCustomHandler();
}
ionViewWillLeave() {
// Unregister the custom back button action for this page
this.unregisterBackButtonAction && this.unregisterBackButtonAction();
}
public initializeBackButtonCustomHandler(): void {
this.unregisterBackButtonAction = this.platform.registerBackButtonAction(() => {
this.customHandleBackButton();
}, 10);
}
private customHandleBackButton(): void {
// Perform necessary actions here ...
}
}
Hence, it is essential to retain the callback of the registerBackButtonAction method and apply it later when exiting the page (or to restore default behavior):
this.unregisterBackButtonAction = this.platform.registerBackButtonAction(() => {
this.customHandleBackButton();
}, 10);
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