# RegistrationManager.RegistrationCallback Added in[API level 30](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) # RegistrationCallback *** ** * ** *** Kotlin\|[Java](https://developer.android.com/reference/android/telephony/ims/RegistrationManager.RegistrationCallback "View this page in Java") ``` open class RegistrationCallback ``` |---|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [kotlin.Any](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html) || | ↳ | [android.telephony.ims.RegistrationManager.RegistrationCallback](https://developer.android.com/reference/kotlin/android/telephony/ims/RegistrationManager.RegistrationCallback#) | Callback class for receiving IMS network Registration callback events. ## Summary | Public constructors || |-------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---| | [RegistrationCallback](https://developer.android.com/reference/kotlin/android/telephony/ims/RegistrationManager.RegistrationCallback#RegistrationCallback())`()`
| | Public methods || |----------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | open[Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [onRegistered](https://developer.android.com/reference/kotlin/android/telephony/ims/RegistrationManager.RegistrationCallback#onRegistered(android.telephony.ims.ImsRegistrationAttributes))`(`attributes:` `[ImsRegistrationAttributes](https://developer.android.com/reference/kotlin/android/telephony/ims/ImsRegistrationAttributes)`)` Notifies the framework when the IMS Provider is registered to the IMS network with corresponding attributes. | | open[Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [onRegistered](https://developer.android.com/reference/kotlin/android/telephony/ims/RegistrationManager.RegistrationCallback#onRegistered(kotlin.Int))`(`imsTransportType:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`)` Notifies the framework when the IMS Provider is registered to the IMS network. | | open[Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [onRegistering](https://developer.android.com/reference/kotlin/android/telephony/ims/RegistrationManager.RegistrationCallback#onRegistering(android.telephony.ims.ImsRegistrationAttributes))`(`attributes:` `[ImsRegistrationAttributes](https://developer.android.com/reference/kotlin/android/telephony/ims/ImsRegistrationAttributes)`)` Notifies the framework when the IMS Provider is trying to register the IMS network. | | open[Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [onRegistering](https://developer.android.com/reference/kotlin/android/telephony/ims/RegistrationManager.RegistrationCallback#onRegistering(kotlin.Int))`(`imsTransportType:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`)` Notifies the framework when the IMS Provider is trying to register the IMS network. | | open[Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [onTechnologyChangeFailed](https://developer.android.com/reference/kotlin/android/telephony/ims/RegistrationManager.RegistrationCallback#onTechnologyChangeFailed(kotlin.Int,%20android.telephony.ims.ImsReasonInfo))`(`imsTransportType:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `info:` `[ImsReasonInfo](https://developer.android.com/reference/kotlin/android/telephony/ims/ImsReasonInfo)`)` A failure has occurred when trying to handover registration to another technology type. | | open[Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [onUnregistered](https://developer.android.com/reference/kotlin/android/telephony/ims/RegistrationManager.RegistrationCallback#onUnregistered(android.telephony.ims.ImsReasonInfo))`(`info:` `[ImsReasonInfo](https://developer.android.com/reference/kotlin/android/telephony/ims/ImsReasonInfo)`)` Notifies the framework when the IMS Provider is unregistered from the IMS network. | ## Public constructors ### RegistrationCallback ``` RegistrationCallback() ``` ## Public methods ### onRegistered Added in[API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` open fun onRegistered(attributes: ImsRegistrationAttributes): Unit ``` Notifies the framework when the IMS Provider is registered to the IMS network with corresponding attributes. | Parameters || |--------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `attributes` | [ImsRegistrationAttributes](https://developer.android.com/reference/kotlin/android/telephony/ims/ImsRegistrationAttributes):The attributes associated with this IMS registration. This value cannot be`null`. | ### onRegistered Added in[API level 30](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) Deprecated in[API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` open fun onRegistered(imsTransportType: Int): Unit ``` **Deprecated:** *Use[onRegistered(android.telephony.ims.ImsRegistrationAttributes)](https://developer.android.com/reference/kotlin/android/telephony/ims/RegistrationManager.RegistrationCallback#onRegistered(android.telephony.ims.ImsRegistrationAttributes))instead.* Notifies the framework when the IMS Provider is registered to the IMS network. | Parameters || |--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `imsTransportType` | [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html):the radio access technology. Value is android.telephony.AccessNetworkConstants.TRANSPORT_TYPE_INVALID,[android.telephony.AccessNetworkConstants#TRANSPORT_TYPE_WWAN](https://developer.android.com/reference/kotlin/android/telephony/AccessNetworkConstants.html#TRANSPORT_TYPE_WWAN:kotlin.Int), or[android.telephony.AccessNetworkConstants#TRANSPORT_TYPE_WLAN](https://developer.android.com/reference/kotlin/android/telephony/AccessNetworkConstants.html#TRANSPORT_TYPE_WLAN:kotlin.Int) | ### onRegistering Added in[API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` open fun onRegistering(attributes: ImsRegistrationAttributes): Unit ``` Notifies the framework when the IMS Provider is trying to register the IMS network. | Parameters || |--------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `attributes` | [ImsRegistrationAttributes](https://developer.android.com/reference/kotlin/android/telephony/ims/ImsRegistrationAttributes):The attributes associated with this IMS registration. This value cannot be`null`. | ### onRegistering Added in[API level 30](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) Deprecated in[API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` open fun onRegistering(imsTransportType: Int): Unit ``` **Deprecated:** *Use[onRegistering(android.telephony.ims.ImsRegistrationAttributes)](https://developer.android.com/reference/kotlin/android/telephony/ims/RegistrationManager.RegistrationCallback#onRegistering(android.telephony.ims.ImsRegistrationAttributes))instead.* Notifies the framework when the IMS Provider is trying to register the IMS network. | Parameters || |--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `imsTransportType` | [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html):the radio access technology. Value is android.telephony.AccessNetworkConstants.TRANSPORT_TYPE_INVALID,[android.telephony.AccessNetworkConstants#TRANSPORT_TYPE_WWAN](https://developer.android.com/reference/kotlin/android/telephony/AccessNetworkConstants.html#TRANSPORT_TYPE_WWAN:kotlin.Int), or[android.telephony.AccessNetworkConstants#TRANSPORT_TYPE_WLAN](https://developer.android.com/reference/kotlin/android/telephony/AccessNetworkConstants.html#TRANSPORT_TYPE_WLAN:kotlin.Int) | ### onTechnologyChangeFailed Added in[API level 30](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` open fun onTechnologyChangeFailed(     imsTransportType: Int,     info: ImsReasonInfo ): Unit ``` A failure has occurred when trying to handover registration to another technology type. | Parameters || |--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `imsTransportType` | [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html):The transport type that has failed to handover registration to. Value is android.telephony.AccessNetworkConstants.TRANSPORT_TYPE_INVALID,[android.telephony.AccessNetworkConstants#TRANSPORT_TYPE_WWAN](https://developer.android.com/reference/kotlin/android/telephony/AccessNetworkConstants.html#TRANSPORT_TYPE_WWAN:kotlin.Int), or[android.telephony.AccessNetworkConstants#TRANSPORT_TYPE_WLAN](https://developer.android.com/reference/kotlin/android/telephony/AccessNetworkConstants.html#TRANSPORT_TYPE_WLAN:kotlin.Int) | | `info` | [ImsReasonInfo](https://developer.android.com/reference/kotlin/android/telephony/ims/ImsReasonInfo):A[ImsReasonInfo](https://developer.android.com/reference/kotlin/android/telephony/ims/ImsReasonInfo)that identifies the reason for failure. This value cannot be`null`. | ### onUnregistered Added in[API level 30](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` open fun onUnregistered(info: ImsReasonInfo): Unit ``` Notifies the framework when the IMS Provider is unregistered from the IMS network. | Parameters || |--------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `info` | [ImsReasonInfo](https://developer.android.com/reference/kotlin/android/telephony/ims/ImsReasonInfo):the[ImsReasonInfo](https://developer.android.com/reference/kotlin/android/telephony/ims/ImsReasonInfo)associated with why registration was disconnected. This value cannot be`null`. |