Pin a message
Sendbird Chat SDK for iOS allows you to pin messages in group channels. You can pin all types of messages including text message, file message, multiple file message, and admin message. The pinned messages feature allows users to mark or highlight specific messages which can be announcements, updates, instructions, or any other messages deemed important in a channel. This makes it easier for channel members to find and access important information, even in large or active channels where there may be a high volume of incoming messages.
- The table below shows the types of channels that support pinned messages. See the channel types section to learn about the differences among various channel types.
Supported, except ephemeral channels
Pinned messages can't be sent as silent messages. The
isSilentproperty should be set to
falsewhen pinning or unpinning messages.
By default, the maximum number of messages that can be pinned is 10 per channel. To increase this limit, contact our sales team.
Pinning a message on send
You can pin a new message that you're sending in a channel by setting the
isPinnedMessage property to
true. This property belongs to the
BaseMessageCreateParams class. The default value for this property is
false, meaning that the message being sent is not automatically pinned unless specified.
Pinning an existing message
You can pin a message, that is already sent in a channel, using the
pinMessage() method of the
GroupChannel class. Specify the
messageId to pin as shown in the code below.
Note: A group channel has to be created before implementing the code below.
The following table shows a list of properties related to the pinned messages feature. The
lastPinnedMessage properties belong to the
List of properties
Specifies an array of message IDs of the pinned messages in a group channel. By default, a maximum of ten messages can be pinned per channel.
Specifies the last message that was pinned in a group channel.
Getting notified when a message is pinned
Once a pinned message is sent or an existing message is pinned, the
channelDidUpdatePinnedMessages() event delegate is invoked. For further information on
GroupChannelDelegate, see the Add or remove a channel delegate page.