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0

We are not able to perform the back button events, Ionic with angular on Android Platform.

When i hit multiple time on back button, we are getting multiple times of alertboxes comes out.

How do we perform backbutton on specific pages with particular alertboxes, and when i clicked back button existing alertbox or menu controller dismissed.

Please look at to code applied. app.component.ts

Thanks

import Component,ViewChildren,QueryList from '@angular/core';
import Platform from '@ionic/angular';
import MenuController, NavController,LoadingController,IonRouterOutlet from '@ionic/angular';
import ToastController,ModalController,AlertController from '@ionic/angular';
import Router from '@angular/router';

export class AppComponent {

 @ViewChildren(IonRouterOutlet) routerOutlets: QueryList < IonRouterOutlet > ;
ngOnInit() 
 this.backButtonHandler()

backButtonHandler() 
 this.platform.backButton.subscribeWithPriority(99999, async() => 
 // close action sheet
 // this.alertBook.dismiss();
 try 
 const element = await this.alertCtrl.getTop();
 if (element) 
 element.dismiss();
 return;
 
 catch (error) 

 // close side menu
 try 
 const element = this.menuCtrl.getOpen();
 if (element !== null) 
 this.menuCtrl.close();
 return;

 

 catch (error) 

 
 this.routerOutlets.forEach((outlet: IonRouterOutlet) => 
 if (outlet && outlet.canGoBack()) 
 outlet.pop();

 else if (this.router.url === '/home') 
 console.log("trigger home");
 this.createAlert();
 else if (this.router.url === '/contact') 
 console.log("trigger contact");
 this.contactAlert();
 
 );
 );

angular ionic-framework ionic-native

share|improve this question

asked Mar 8 at 5:37

PPSPPS

1961319

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  hello do you find solution, same problem here
  
  – LaurentY
  Mar 19 at 17:30
  

  
  
  
  

add a comment | 

0

We are not able to perform the back button events, Ionic with angular on Android Platform.

When i hit multiple time on back button, we are getting multiple times of alertboxes comes out.

How do we perform backbutton on specific pages with particular alertboxes, and when i clicked back button existing alertbox or menu controller dismissed.

Please look at to code applied. app.component.ts

Thanks

import Component,ViewChildren,QueryList from '@angular/core';
import Platform from '@ionic/angular';
import MenuController, NavController,LoadingController,IonRouterOutlet from '@ionic/angular';
import ToastController,ModalController,AlertController from '@ionic/angular';
import Router from '@angular/router';

export class AppComponent {

 @ViewChildren(IonRouterOutlet) routerOutlets: QueryList < IonRouterOutlet > ;
ngOnInit() 
 this.backButtonHandler()

backButtonHandler() 
 this.platform.backButton.subscribeWithPriority(99999, async() => 
 // close action sheet
 // this.alertBook.dismiss();
 try 
 const element = await this.alertCtrl.getTop();
 if (element) 
 element.dismiss();
 return;
 
 catch (error) 

 // close side menu
 try 
 const element = this.menuCtrl.getOpen();
 if (element !== null) 
 this.menuCtrl.close();
 return;

 

 catch (error) 

 
 this.routerOutlets.forEach((outlet: IonRouterOutlet) => 
 if (outlet && outlet.canGoBack()) 
 outlet.pop();

 else if (this.router.url === '/home') 
 console.log("trigger home");
 this.createAlert();
 else if (this.router.url === '/contact') 
 console.log("trigger contact");
 this.contactAlert();
 
 );
 );

angular ionic-framework ionic-native

share|improve this question

asked Mar 8 at 5:37

PPSPPS

1961319

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  hello do you find solution, same problem here
  
  – LaurentY
  Mar 19 at 17:30
  

  
  
  
  

add a comment | 

We are not able to perform the back button events, Ionic with angular on Android Platform.

When i hit multiple time on back button, we are getting multiple times of alertboxes comes out.

How do we perform backbutton on specific pages with particular alertboxes, and when i clicked back button existing alertbox or menu controller dismissed.

Please look at to code applied. app.component.ts

Thanks

import Component,ViewChildren,QueryList from '@angular/core';
import Platform from '@ionic/angular';
import MenuController, NavController,LoadingController,IonRouterOutlet from '@ionic/angular';
import ToastController,ModalController,AlertController from '@ionic/angular';
import Router from '@angular/router';

export class AppComponent {

 @ViewChildren(IonRouterOutlet) routerOutlets: QueryList < IonRouterOutlet > ;
ngOnInit() 
 this.backButtonHandler()

backButtonHandler() 
 this.platform.backButton.subscribeWithPriority(99999, async() => 
 // close action sheet
 // this.alertBook.dismiss();
 try 
 const element = await this.alertCtrl.getTop();
 if (element) 
 element.dismiss();
 return;
 
 catch (error) 

 // close side menu
 try 
 const element = this.menuCtrl.getOpen();
 if (element !== null) 
 this.menuCtrl.close();
 return;

 

 catch (error) 

 
 this.routerOutlets.forEach((outlet: IonRouterOutlet) => 
 if (outlet && outlet.canGoBack()) 
 outlet.pop();

 else if (this.router.url === '/home') 
 console.log("trigger home");
 this.createAlert();
 else if (this.router.url === '/contact') 
 console.log("trigger contact");
 this.contactAlert();
 
 );
 );

angular ionic-framework ionic-native

share|improve this question

asked Mar 8 at 5:37

PPSPPS

1961319

import Component,ViewChildren,QueryList from '@angular/core';
import Platform from '@ionic/angular';
import MenuController, NavController,LoadingController,IonRouterOutlet from '@ionic/angular';
import ToastController,ModalController,AlertController from '@ionic/angular';
import Router from '@angular/router';

export class AppComponent {

 @ViewChildren(IonRouterOutlet) routerOutlets: QueryList < IonRouterOutlet > ;
ngOnInit() 
 this.backButtonHandler()

backButtonHandler() 
 this.platform.backButton.subscribeWithPriority(99999, async() => 
 // close action sheet
 // this.alertBook.dismiss();
 try 
 const element = await this.alertCtrl.getTop();
 if (element) 
 element.dismiss();
 return;
 
 catch (error) 

 // close side menu
 try 
 const element = this.menuCtrl.getOpen();
 if (element !== null) 
 this.menuCtrl.close();
 return;

 

 catch (error) 

 
 this.routerOutlets.forEach((outlet: IonRouterOutlet) => 
 if (outlet && outlet.canGoBack()) 
 outlet.pop();

 else if (this.router.url === '/home') 
 console.log("trigger home");
 this.createAlert();
 else if (this.router.url === '/contact') 
 console.log("trigger contact");
 this.contactAlert();
 
 );
 );

angular ionic-framework ionic-native

angular ionic-framework ionic-native

share|improve this question

asked Mar 8 at 5:37

PPSPPS

1961319

share|improve this question

asked Mar 8 at 5:37

PPSPPS

1961319

asked Mar 8 at 5:37

PPSPPS

1961319

asked Mar 8 at 5:37

PPSPPS

1961319