Configure this app in src/environments/environment.ts and run it:

npm install
ionic serve

To see how to configure this app with Okta or Auth0, see these instructions.

Generate an iOS project with the following command:

ionic build
npm i @capacitor/ios
npx cap add ios

Add your custom scheme to ios/App/App/Info.plist:

<key>CFBundleURLTypes</key>
<array>
  <dict>
    <key>CFBundleURLName</key>
    <string>com.getcapacitor.capacitor</string>
    <key>CFBundleURLSchemes</key>
    <array>
      <string>dev.localhost.ionic</string>
      <string>com.okta.dev-133337</string>
    </array>
  </dict>
</array>

Then, run your project using the Capacitor CLI:

npx cap run ios

You can also open your project in Xcode and configure code signing.

npx cap open ios

Then run your app from Xcode.

Build and add Capacitor for Android with the following commands:

ionic build
npm i @capacitor/android
npx cap add android

Add your reverse domain name as the android:scheme in android/app/src/main/AndroidManifest.xml by adding another <intent-filter> above the existing one in the <activity> element.

<intent-filter>
    <action android:name="android.intent.action.VIEW" />
    <category android:name="android.intent.category.DEFAULT"/>
    <category android:name="android.intent.category.BROWSABLE" />
    <data android:scheme="com.okta.dev-133337" /> <!-- or dev.localhost.ionic -->
</intent-filter>

Then, run your project using the Capacitor CLI:

npx cap run android

You can also open your project in Android Studio and run your app.

npx cap open android

See Ionic's iOS and Android Development docs for more information.