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NotificationCompat.MessagingStyle

public static class NotificationCompat.MessagingStyle
extends NotificationCompat.Style

java.lang.Object
   ↳ androidx.core.app.NotificationCompat.Style
     ↳ androidx.core.app.NotificationCompat.MessagingStyle

Helper class for generating large-format notifications that include multiple back-and-forth messages of varying types between any number of people.
In order to get a backwards compatible behavior, the app needs to use the v7 version of the notification builder together with this style, otherwise the user will see the normal notification view.
Use setConversationTitle(CharSequence) to set a conversation title for group chats with more than two people. This could be the user-created name of the group or, if it doesn't have a specific name, a list of the participants in the conversation. Do not set a conversation title for one-on-one chats, since platforms use the existence of this field as a hint that the conversation is a group.
This class is a "rebuilder": It attaches to a Builder object and modifies its behavior, like so: 


 Notification notification = new Notification.Builder()
     .setContentTitle("2 new messages with " + sender.toString())
     .setContentText(subject)
     .setSmallIcon(R.drawable.new_message)
     .setLargeIcon(aBitmap)
     .setStyle(new Notification.MessagingStyle(resources.getString(R.string.reply_name))
         .addMessage(messages[0].getText(), messages[0].getTime(), messages[0].getSender())
         .addMessage(messages[1].getText(), messages[1].getTime(), messages[1].getSender()))
     .build();

Summary

Nested classes

class NotificationCompat.MessagingStyle.Message

 

Constants

int MAXIMUM_RETAINED_MESSAGES

The maximum number of messages that will be retained in the Notification itself (the number displayed is up to the platform).

Public constructors

MessagingStyle(CharSequence userDisplayName)

This constructor is deprecated. Use #MessagingStyle(Person) instead.

MessagingStyle(Person user)

Creates a new NotificationCompat.MessagingStyle object.

Public methods

void addCompatExtras(Bundle extras)

This is called with the extras of the framework Notification during the NotificationCompat.Builder.build() process, after apply() has been called.

NotificationCompat.MessagingStyle addHistoricMessage(NotificationCompat.MessagingStyle.Message message)

Adds a NotificationCompat.MessagingStyle.Message for historic context in this notification.

NotificationCompat.MessagingStyle addMessage(CharSequence text, long timestamp, CharSequence sender)

This method is deprecated. Use addMessage(CharSequence, long, Person) or addMessage(Message)

NotificationCompat.MessagingStyle addMessage(NotificationCompat.MessagingStyle.Message message)

Adds a NotificationCompat.MessagingStyle.Message for display in this notification.

NotificationCompat.MessagingStyle addMessage(CharSequence text, long timestamp, Person person)

Adds a message for display by this notification.

static NotificationCompat.MessagingStyle extractMessagingStyleFromNotification(Notification notification)

Retrieves a NotificationCompat.MessagingStyle from a Notification, enabling an application that has set a NotificationCompat.MessagingStyle using NotificationCompat or Notification.Builder to send messaging information to another application using NotificationCompat, regardless of the API level of the system.

CharSequence getConversationTitle()

Return the title to be displayed on this conversation.

List<NotificationCompat.MessagingStyle.Message> getHistoricMessages()

Gets the list of historic Messages in the notification.

List<NotificationCompat.MessagingStyle.Message> getMessages()

Gets the list of Message objects that represent the notification

Person getUser()

Returns the person to be used for any replies sent by the user.

CharSequence getUserDisplayName()

This method is deprecated. Use getUser() instead.

boolean isGroupConversation()

Returns true if this notification represents a group conversation, otherwise false.

NotificationCompat.MessagingStyle setConversationTitle(CharSequence conversationTitle)

Sets the title to be displayed on this conversation.

NotificationCompat.MessagingStyle setGroupConversation(boolean isGroupConversation)

Sets whether this conversation notification represents a group.

Inherited methods

Constants

MAXIMUM_RETAINED_MESSAGES

public static final int MAXIMUM_RETAINED_MESSAGES

The maximum number of messages that will be retained in the Notification itself (the number displayed is up to the platform).

Constant Value: 25 (0x00000019)

Public constructors

MessagingStyle

public MessagingStyle (CharSequence userDisplayName)

This constructor is deprecated.
Use #MessagingStyle(Person) instead.

Parameters
userDisplayName CharSequence: Required - the name to be displayed for any replies sent by the user before the posting app reposts the notification with those messages after they've been actually sent and in previous messages sent by the user added in addMessage(Message)

MessagingStyle

public MessagingStyle (Person user)

Creates a new NotificationCompat.MessagingStyle object. Note that Person must have a non-empty name.

Parameters
user Person: This Person's name will be shown when this app's notification is being replied to. It's used temporarily so the app has time to process the send request and repost the notification with updates to the conversation.

Public methods

addCompatExtras

public void addCompatExtras (Bundle extras)

This is called with the extras of the framework Notification during the NotificationCompat.Builder.build() process, after apply() has been called. This means that you only need to add data which won't be populated by the framework Notification which was built so far. Moreover, recovering builders and styles is only supported at API 19 and above, no implementation is required for current BigTextStyle, BigPictureStyle, or InboxStyle.

Parameters
extras Bundle

addHistoricMessage

public NotificationCompat.MessagingStyle addHistoricMessage (NotificationCompat.MessagingStyle.Message message)

Adds a NotificationCompat.MessagingStyle.Message for historic context in this notification.

Messages should be added as historic if they are not the main subject of the notification but may give context to a conversation. The system may choose to present them only when relevant, e.g. when replying to a message through a RemoteInput.

The messages should be added in chronologic order, i.e. the oldest first, the newest last.

Parameters
message NotificationCompat.MessagingStyle.Message: The historic NotificationCompat.MessagingStyle.Message to be added
Returns
NotificationCompat.MessagingStyle this object for method chaining

addMessage

public NotificationCompat.MessagingStyle addMessage (CharSequence text, 
                long timestamp, 
                CharSequence sender)

This method is deprecated.
Use addMessage(CharSequence, long, Person) or addMessage(Message)

Adds a message for display by this notification. Convenience call for a simple NotificationCompat.MessagingStyle.Message in addMessage(Message)

Parameters
text CharSequence: A CharSequence to be displayed as the message content
timestamp long: Time at which the message arrived in ms since Unix epoch
sender CharSequence: A CharSequence to be used for displaying the name of the sender. Should be null for messages by the current user, in which case the platform will insert getUserDisplayName(). Should be unique amongst all individuals in the conversation, and should be consistent during re-posts of the notification.
Returns
NotificationCompat.MessagingStyle this object for method chaining

addMessage

public NotificationCompat.MessagingStyle addMessage (NotificationCompat.MessagingStyle.Message message)

Adds a NotificationCompat.MessagingStyle.Message for display in this notification.

Parameters
message NotificationCompat.MessagingStyle.Message: The NotificationCompat.MessagingStyle.Message to be displayed
Returns
NotificationCompat.MessagingStyle this object for method chaining

addMessage

public NotificationCompat.MessagingStyle addMessage (CharSequence text, 
                long timestamp, 
                Person person)

Adds a message for display by this notification. Convenience call for addMessage(Message).

Parameters
text CharSequence

timestamp long

person Person

Returns
NotificationCompat.MessagingStyle this for method chaining

extractMessagingStyleFromNotification

public static NotificationCompat.MessagingStyle extractMessagingStyleFromNotification (Notification notification)

Retrieves a NotificationCompat.MessagingStyle from a Notification, enabling an application that has set a NotificationCompat.MessagingStyle using NotificationCompat or Notification.Builder to send messaging information to another application using NotificationCompat, regardless of the API level of the system.

Parameters
notification Notification

Returns
NotificationCompat.MessagingStyle null if there is no NotificationCompat.MessagingStyle set, or if the SDK version is < 16 (JellyBean).

getConversationTitle

public CharSequence getConversationTitle ()

Return the title to be displayed on this conversation. Can be null.

Returns
CharSequence

getHistoricMessages

public List<NotificationCompat.MessagingStyle.Message> getHistoricMessages ()

Gets the list of historic Messages in the notification.

Returns
List<NotificationCompat.MessagingStyle.Message>

getMessages

public List<NotificationCompat.MessagingStyle.Message> getMessages ()

Gets the list of Message objects that represent the notification

Returns
List<NotificationCompat.MessagingStyle.Message>

getUser

public Person getUser ()

Returns the person to be used for any replies sent by the user.

Returns
Person

getUserDisplayName

public CharSequence getUserDisplayName ()

This method is deprecated.
Use getUser() instead.

Returns the name to be displayed for any replies sent by the user.

Returns
CharSequence

isGroupConversation

public boolean isGroupConversation ()

Returns true if this notification represents a group conversation, otherwise false.

If the application that generated this NotificationCompat.MessagingStyle targets an SDK version less than Build.VERSION_CODES.P and setGroupConversation(boolean) was not called, this method becomes dependent on whether or not the conversation title is set; returning true if the conversation title is a non-null value, or false otherwise. This is to maintain backwards compatibility. Regardless, setGroupConversation(boolean) has precedence over this legacy behavior. From P forward, setConversationTitle(CharSequence) has no affect on group conversation status.

Returns
boolean

setConversationTitle

public NotificationCompat.MessagingStyle setConversationTitle (CharSequence conversationTitle)

Sets the title to be displayed on this conversation. May be set to null.

This API's behavior was changed in SDK version Build.VERSION_CODES.P. If your application's target version is less than Build.VERSION_CODES.P, setting a conversation title to a non-null value will make isGroupConversation() return true and passing null will make it return false. This behavior can be overridden by calling setGroupConversation(boolean) regardless of SDK version. In P and above, this method does not affect group conversation settings.

Parameters
conversationTitle CharSequence: Title displayed for this conversation
Returns
NotificationCompat.MessagingStyle this object for method chaining

setGroupConversation

public NotificationCompat.MessagingStyle setGroupConversation (boolean isGroupConversation)

Sets whether this conversation notification represents a group.

Parameters
isGroupConversation boolean: true if the conversation represents a group, false otherwise.
Returns
NotificationCompat.MessagingStyle this object for method chaining