Hardware back button does not work on device

[uzumakinaruto123]

Tried capacitor for first time today and built the app successfully. But hardware back button does not work on device.

Back button on navbar works.

Steps I followed:

1. ionic start capacitorApp sidemenu
2. npm install --save @capacitor/cli @capacitor/core
3. npm uninstall --save cordova-plugin-splashscreen
4. npm run build
5. npx cap add android
6. npx cap open android
7. run app with android studio

On hitting hardware back button app does exit, but page navigation does not work.

Capacitor Info:

   Capacitor Doctor

Dependencies:

  @capacitor/cli: 1.0.0-alpha.32

  @capacitor/core: 1.0.0-alpha.32

  Capacitor Android: not installed

[success] Android looking great! 👌

Ionic Info:

cli packages: (C:\Users\nquser\AppData\Roaming\npm\node_modules)

    @ionic/cli-utils  : 1.19.2
    ionic (Ionic CLI) : 3.20.0

local packages:

    @ionic/app-scripts : 3.1.8
    Ionic Framework    : ionic-angular 3.9.2

System:

    Node : v8.9.4
    npm  : 3.7.3
    OS   : Windows 10

Misc:

    backend : legacy

Device : MiA1(Android 8.1.0)

[mlynch]

We're not emitting the backbutton event that Cordova did that Ionic relies on, we can fix that

[mlynch]

K, fixed in master and will be in the next release in a few days

[moda20]

Is this, fixed ? I am having the same troubles with back button not exiting.
I do get this on my Android studio console :

V/ViewRootImpl: debug enqueueInputEvent: event = KeyEvent { action=ACTION_UP, keyCode=KEYCODE_BACK, scanCode=158, metaState=0, flags=0x48, repeatCount=0, eventTime=5988254, downTime=5988089, deviceId=8, source=0x101 },processImmediately = true,mProcessInputEventsScheduled = false, this = ViewRoot{76d403f com.domain.myApp/com.domain.myApp.MainActivity,ident = 0}
V/Capacitor/Plugin/App: Notifying listeners for event backButton
D/WebView: evaluateJavascript=window.Capacitor.fromNative({"save":true,"callbackId":"59221449","pluginId":"App","methodName":"addListener","success":true,"data":{}})
           evaluateJavascript=window.Capacitor.triggerEvent("backbutton", "document")

I am using the ionic 4 beta with :

Capacitor Doctor  💊 

Dependencies:

  @capacitor/cli: 1.0.0-beta.6

  @capacitor/core: 1.0.0-beta.6

  @capacitor/android: 1.0.0-beta.6

  @capacitor/ios: 1.0.0-beta.6

  Capacitor Android: not installed

[jcesarmobile]

Please, if something doesn’t work report a new issue and provide more information (code used, or even sample app if possible). Don’t comment on old issues as it can be missed

[anRoswell]

still dont work...

[pubkey]

Still does not work on capacitor without ionic.

import { App } from '@capacitor/app';
document.addEventListener('deviceready', () => {
  App.addListener('backButton', (ev: any) => {
    console.log('fire');
  });
});

Edit: I could solve the problem. I loaded my custom plugins the old way, so I got the error capacitor Error: "App" plugin is not implemented on android.
The solution was to switch the the new plugin autoloading like described here.

[ionitron-bot]

Thanks for the issue! This issue is being locked to prevent comments that are not relevant to the original issue. If this is still an issue with the latest version of Capacitor, please create a new issue and ensure the template is fully filled out.