GNSMessage 클래스
컬렉션을 사용해 정리하기
내 환경설정을 기준으로 콘텐츠를 저장하고 분류하세요.
메시지는 게시된 객체로, 근처 기기 간에 전송됩니다.
동일한 Apiary 개발자 콘솔 ID를 공유하는 앱 간에만 메시지가 전송됩니다. https://code.google.com/apis/console/을 참고하세요.
메시지에는 게시된 메시지를 구독과 일치시키는 데 사용되는 유형도 있습니다.
- 참고 항목
- GNSMessageManager에서 간행물 및 구독에 관해 자세히 알아보세요.
NSObject를 상속합니다.
|
((unavailable("Use
+messageWithContent.") | - __attribute__ |
| |
| + (instancetype) messageWithContent: |
|
(NSData *) |
content |
|
| - (NSString*) messageNamespace |
|
readnonatomiccopy |
메시지 유형의 네임스페이스입니다.
빈 문자열은 기본 네임스페이스이며 각 앱 (또는 Google Developer Console 프로젝트를 공유하는 앱)에만 공개됩니다. 현재는 비콘 첨부파일에만 기본 네임스페이스가 아닌 다른 네임스페이스가 있습니다.
메시지 유형입니다.
kGNSMessageMaxLength 유니코드 문자 이하여야 합니다. 더 긴 유형을 사용하려고 하면 어설션이 사용 설정된 경우 라이브러리가 어설션하고 어설션이 사용 중지된 경우 메시지를 게시하지 않습니다.
메시지의 내용.
데이터 형식은 애플리케이션에 따라 다르며 데이터의 모든 게시자와 구독자가 동의를 얻어야 합니다. kGNSMessageMinimumContentSize보다 길 수 없습니다. 이보다 큰 객체를 사용하려고 하면 어설션이 사용 설정되어 있는지 어설션하고 어설션이 사용 중지된 경우에는 메시지를 게시하지 않습니다.
달리 명시되지 않는 한 이 페이지의 콘텐츠에는 Creative Commons Attribution 4.0 라이선스에 따라 라이선스가 부여되며, 코드 샘플에는 Apache 2.0 라이선스에 따라 라이선스가 부여됩니다. 자세한 내용은 Google Developers 사이트 정책을 참조하세요. 자바는 Oracle 및/또는 Oracle 계열사의 등록 상표입니다.
최종 업데이트: 2025-08-13(UTC)
[null,null,["최종 업데이트: 2025-08-13(UTC)"],[[["\u003cp\u003eThe \u003ccode\u003eGNSMessage\u003c/code\u003e class facilitates communication between nearby devices by publishing and delivering messages between apps sharing the same Apiary Dev Console ID.\u003c/p\u003e\n"],["\u003cp\u003eMessages have a content and type, allowing applications to filter and process relevant messages; content is application-specific, while type enables matching with subscriptions.\u003c/p\u003e\n"],["\u003cp\u003eYou can create messages using class methods \u003ccode\u003emessageWithContent:\u003c/code\u003e for the default type, or \u003ccode\u003emessageWithContent:type:\u003c/code\u003e to specify a custom type.\u003c/p\u003e\n"],["\u003cp\u003eMessages are restricted in size: type cannot exceed \u003ccode\u003ekGNSMessageMaximumLength\u003c/code\u003e Unicode characters and content cannot be larger than \u003ccode\u003ekGNSMessageMaximumContentSize\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe message namespace, primarily used for beacon attachments, defaults to an empty string and is private to apps or apps sharing a Google Developer Console project.\u003c/p\u003e\n"]]],["The GNSMessage class manages messages delivered between nearby devices within the same app or apps sharing an ID. Messages have content, a type, and a namespace. Key actions include creating messages using class methods: `messageWithContent:` for the default type and `messageWithContent:type:` for a specified type. Properties include `messageNamespace`, `type`, and `content`, which hold the message's namespace, type, and data, respectively. Message size and type length have limits.\n"],null,["# GNSMessage Class\n\n[Instance Methods](#pub-methods) \\| [Class Methods](#pub-static-methods) \\| [Properties](#properties) \nGNSMessage Class Reference \n\nOverview\n--------\n\nA message is a published object that is delivered between nearby devices.\n\nMessages are delivered only between apps sharing the same Apiary Dev Console ID. See \u003chttps://code.google.com/apis/console/\u003e\n\nA message also has a type, which is used to match a published message with subscriptions.\n\nSee also\n: [GNSMessageManager](/nearby/messages/ios/reference/interface_g_n_s_message_manager \"The message manager lets you create publications and subscriptions. \") for more information about publications and subscriptions.\n\nInherits NSObject.\n\n|-------------------------------------------|---------------------|\n| Instance Method Summary ----------------------- ||\n| ((unavailable(\"Use +messageWithContent.\") | - **__attribute__** |\n| ||\n\n|----------------|------------------------------------------------------------------------------------------------------------------------|\n| Class Method Summary -------------------- ||\n| (instancetype) | + [messageWithContent:](/nearby/messages/ios/reference/interface_g_n_s_message#a11c95fc8aa716759a95b46ac2d9658b5) |\n| | Message with the default type. [More...](#a11c95fc8aa716759a95b46ac2d9658b5) |\n| ||\n| (instancetype) | + [messageWithContent:type:](/nearby/messages/ios/reference/interface_g_n_s_message#a86840561e1ebbcb98ad209adc110fb74) |\n| | Message with the specified type. [More...](#a86840561e1ebbcb98ad209adc110fb74) |\n| ||\n\n|-------------|--------------------------------------------------------------------------------------------------------------|\n| Property Summary ---------------- ||\n| NSString \\* | [messageNamespace](/nearby/messages/ios/reference/interface_g_n_s_message#aad0830d118becf213310c83b279bf0a6) |\n| | The namespace of the message type. [More...](#aad0830d118becf213310c83b279bf0a6) |\n| ||\n| NSString \\* | [type](/nearby/messages/ios/reference/interface_g_n_s_message#a20d9593b44edfbfa78e4d4416d8a2a1c) |\n| | The type of the message. [More...](#a20d9593b44edfbfa78e4d4416d8a2a1c) |\n| ||\n| NSData \\* | [content](/nearby/messages/ios/reference/interface_g_n_s_message#abd1454b18947ac01b56ac926ff9e6626) |\n| | The content of the message. [More...](#abd1454b18947ac01b56ac926ff9e6626) |\n| ||\n\nMethod Detail\n-------------\n\n|--------------------------------------|---|-------------|-----------|---|\n| + (instancetype) messageWithContent: | | (NSData \\*) | *content* | |\n\nMessage with the default type.\n\nSee also\n: [GNSMessage.content](/nearby/messages/ios/reference/interface_g_n_s_message#abd1454b18947ac01b56ac926ff9e6626 \"The content of the message. \") for more information about the [content](/nearby/messages/ios/reference/interface_g_n_s_message#abd1454b18947ac01b56ac926ff9e6626 \"The content of the message. \"). \n\n|----------------------------------------------------------------------------------------------------------------------------------|---|---------------|-----------|\n| + (instancetype) [messageWithContent:](/nearby/messages/ios/reference/interface_g_n_s_message#a11c95fc8aa716759a95b46ac2d9658b5) | | (NSData \\*) | *content* |\n| type: | | (NSString \\*) | *type* |\n| | | | |\n\nMessage with the specified type.\n\nSee also\n: [GNSMessage.content](/nearby/messages/ios/reference/interface_g_n_s_message#abd1454b18947ac01b56ac926ff9e6626 \"The content of the message. \") for more information about the [content](/nearby/messages/ios/reference/interface_g_n_s_message#abd1454b18947ac01b56ac926ff9e6626 \"The content of the message. \").\n:\n [GNSMessage.type](/nearby/messages/ios/reference/interface_g_n_s_message#a20d9593b44edfbfa78e4d4416d8a2a1c \"The type of the message. \") for more information about the [type](/nearby/messages/ios/reference/interface_g_n_s_message#a20d9593b44edfbfa78e4d4416d8a2a1c \"The type of the message. \").\n\nProperty Detail\n---------------\n\n|-------------------------------------------------------------------------|-------------------|\n| |---------------------------------| | - (NSString\\*) messageNamespace | | readnonatomiccopy |\n\nThe namespace of the message type.\n\nThe empty string is the default namespace, and is private to each app (or apps sharing a Google Developer Console project). Note that currently, only beacon attachments will have a namespace other than the default. \n\n|-------------------------------------------------|-------------------|\n| |---------------------| | - (NSString\\*) type | | readnonatomiccopy |\n\nThe type of the message.\n\nCannot be longer than kGNSMessageMaximumLength Unicode characters. Attempting to use a longer type will cause the library to assert if assertions are enabled and not publish the message if assertions are disabled. \n\n|---------------------------------------------------|-------------------|\n| |----------------------| | - (NSData\\*) content | | readnonatomiccopy |\n\nThe content of the message.\n\nThe format of the data is application-specific, and must be agreed upon by all publishers and subscribers of the data. Cannot be longer than kGNSMessageMaximumContentSize. Attempting to use an object larger than this will cause the library to assert if assertions are enabled and not publish the message if assertions are disabled."]]
