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Merge "Update docs for getGenericConferenceActiveChildCall"

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Hall Liu
2020-03-26 00:50:11 +00:00
committed by Gerrit Code Review
parent e5c083c3ec 135e53aaff
commit 7fb144e21b
1 changed files with 11 additions and 0 deletions
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telecomm/java/android/telecom/Call.java
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@@ -2075,6 +2075,17 @@ public final class Call {
/** /**
* Returns the child {@link Call} in a generic conference that is currently active. * Returns the child {@link Call} in a generic conference that is currently active.
*
* A "generic conference" is the mechanism used to support two simultaneous calls on a device
* in CDMA networks. It is effectively equivalent to having one call active and one call on hold
* in GSM or IMS calls. This method returns the currently active call.
*
* In a generic conference, the network exposes the conference to us as a single call, and we
* switch between talking to the two participants using a CDMA flash command. Since the network
* exposes no additional information about the call, the only way we know which caller we're
* currently talking to is by keeping track of the flash commands that we've sent to the
* network.
*
* For calls that are not generic conferences, or when the generic conference has more than * For calls that are not generic conferences, or when the generic conference has more than
* 2 children, returns {@code null}. * 2 children, returns {@code null}.
* @see Details#PROPERTY_GENERIC_CONFERENCE * @see Details#PROPERTY_GENERIC_CONFERENCE