# TelephoneKeypadTemplate.PhoneNumberChangeListener

Artifact: [androidx.car.app:app](https://developer.android.com/jetpack/androidx/releases/car-app) [View Source](https://cs.android.com/search?q=file:androidx/car/app/dialer/TelephoneKeypadTemplate.java+class:androidx.car.app.dialer.TelephoneKeypadTemplate.PhoneNumberChangeListener) Added in [1.8.0](https://developer.android.com/jetpack/androidx/releases/car-app#1.8.0)

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```
public interface TelephoneKeypadTemplate.PhoneNumberChangeListener
```

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An interface for clients to receive events about the phone number changing.

## Summary

| ### Public methods |
|---|---|
| `abstract void` | `https://developer.android.com/reference/androidx/car/app/dialer/TelephoneKeypadTemplate.PhoneNumberChangeListener#onPhoneNumberChanged(java.lang.String)(@https://jspecify.dev/docs/api/org/jspecify/annotations/NonNull.html https://developer.android.com/reference/java/lang/String.html number)` Called when the number that's being dialed by the user changes for any reason. |

## Public methods

### onPhoneNumberChanged

Added in [1.8.0](https://developer.android.com/jetpack/androidx/releases/car-app#1.8.0)

```
abstract void onPhoneNumberChanged(@NonNull String number)
```

Called when the number that's being dialed by the user changes for any reason. This is usually associated with a button press which will also trigger an event to `https://developer.android.com/reference/androidx/car/app/dialer/TelephoneKeypadCallback`; however, keys like "backspace" will update this number number without firing an event to the keypad listener.