Added in API level 31

MessageWaitingIndicatorListener

---

Kotlin |Java

interface MessageWaitingIndicatorListener

android.telephony.TelephonyCallback.MessageWaitingIndicatorListener

Interface for message waiting indicator listener.

Summary

Public methods
abstract Unit	onMessageWaitingIndicatorChanged(mwi: Boolean) Callback invoked when the message-waiting indicator changes on the registered subscription.

Public methods

onMessageWaitingIndicatorChanged

Added in API level 31

abstract fun onMessageWaitingIndicatorChanged(mwi: Boolean): Unit

Callback invoked when the message-waiting indicator changes on the registered subscription. Note, the registration subscription ID comes from TelephonyManager object by TelephonyManager.registerTelephonyCallback(Executor, TelephonyCallback). If this TelephonyManager object was created with TelephonyManager.createForSubscriptionId(int), then the callback applies to the subscription ID. Otherwise, this callback applies to SubscriptionManager.getDefaultSubscriptionId(). The calling app should have carrier privileges (see TelephonyManager.hasCarrierPrivileges) if it does not have the android.Manifest.permission#READ_PHONE_STATE.
Requires android.Manifest.permission#READ_PHONE_STATE