MbmsGroupCallSession

Kotlin |Java

open class MbmsGroupCallSession : AutoCloseable

kotlin.Any
↳	android.telephony.MbmsGroupCallSession

This class provides functionality for accessing group call functionality over MBMS.

Summary

Public methods
open Unit	`close()` Terminates this instance.
open static MbmsGroupCallSession?	`create(context: Context, subscriptionId: Int, executor: Executor, callback: MbmsGroupCallSessionCallback)` Create a new `MbmsGroupCallSession` using the given subscription ID.
open static MbmsGroupCallSession?	`create(context: Context, executor: Executor, callback: MbmsGroupCallSessionCallback)` Create a new `MbmsGroupCallSession` using the system default data subscription ID.
open GroupCall?	`startGroupCall(tmgi: Long, saiList: MutableList<Int!>, frequencyList: MutableList<Int!>, executor: Executor, callback: GroupCallCallback)` Starts the requested group call, reporting status to the indicated callback.

Public methods

close

Added in API level 29

open fun close(): Unit

Terminates this instance. Also terminates any group calls spawned from this instance as if GroupCall.close() had been called on them. After this method returns, no further callbacks originating from the middleware will be enqueued on the provided instance of MbmsGroupCallSessionCallback, but callbacks that have already been enqueued will still be delivered. It is safe to call create(android.content.Context,int,java.util.concurrent.Executor,android.telephony.mbms.MbmsGroupCallSessionCallback) to obtain another instance of MbmsGroupCallSession immediately after this method returns. May throw an IllegalStateException

Exceptions
`java.lang.Exception`	if this resource cannot be closed

create

Added in API level 29

open static fun create(
    context: Context, 
    subscriptionId: Int, 
    executor: Executor, 
    callback: MbmsGroupCallSessionCallback
): MbmsGroupCallSession?

Create a new MbmsGroupCallSession using the given subscription ID. You may only have one instance of MbmsGroupCallSession per UID. If you call this method while there is an active instance of MbmsGroupCallSession in your process (in other words, one that has not had close() called on it), this method will throw an IllegalStateException. If you call this method in a different process running under the same UID, an error will be indicated via MbmsGroupCallSessionCallback.onError(int, String). Note that initialization may fail asynchronously. If you wish to try again after you receive such an asynchronous error, you must call close() on the instance of MbmsGroupCallSession that you received before calling this method again.

Parameters
`context`	Context: The `Context` to use. This value cannot be `null`.
`subscriptionId`	Int: The subscription ID to use.
`executor`	Executor: The executor on which you wish to execute callbacks. This value cannot be `null`.
`callback`	MbmsGroupCallSessionCallback: A callback object on which you wish to receive results of asynchronous operations. This value cannot be `null`.

Return
`MbmsGroupCallSession?`	An instance of `MbmsGroupCallSession`, or null if an error occurred.

create

Added in API level 29

open static fun create(
    context: Context, 
    executor: Executor, 
    callback: MbmsGroupCallSessionCallback
): MbmsGroupCallSession?

Create a new MbmsGroupCallSession using the system default data subscription ID. See create(android.content.Context,int,java.util.concurrent.Executor,android.telephony.mbms.MbmsGroupCallSessionCallback).

Parameters
`context`	Context: This value cannot be `null`.
`executor`	Executor: This value cannot be `null`.
`callback`	MbmsGroupCallSessionCallback: This value cannot be `null`.

Return
`MbmsGroupCallSession?`	This value may be `null`.

startGroupCall

Added in API level 29

open fun startGroupCall(
    tmgi: Long, 
    saiList: MutableList<Int!>, 
    frequencyList: MutableList<Int!>, 
    executor: Executor, 
    callback: GroupCallCallback
): GroupCall?

Starts the requested group call, reporting status to the indicated callback. Returns an object used to control that call. May throw an IllegalArgumentException or an IllegalStateException Asynchronous errors through the callback include any of the errors in MbmsErrors.GeneralErrors.

Parameters
`tmgi`	Long: The TMGI, an identifier for the group call you want to join.
`saiList`	MutableList<Int!>: A list of SAIs for the group call that should be negotiated separately with the carrier. This value cannot be `null`.
`frequencyList`	MutableList<Int!>: A lost of frequencies for the group call that should be negotiated separately with the carrier. This value cannot be `null`.
`executor`	Executor: The executor on which you wish to execute callbacks for this stream. This value cannot be `null`.
`callback`	GroupCallCallback: The callback that you want to receive information about the call on. This value cannot be `null`.

Return
`GroupCall?`	An instance of `GroupCall` through which the call can be controlled. May be `null` if an error occurred.