---
title: MTRBaseClusterContentAppObserver
framework: matter
role: symbol
role_heading: Class
path: matter/mtrbaseclustercontentappobserver
---

# MTRBaseClusterContentAppObserver

Cluster Content App Observer

## Declaration

```swift
class MTRBaseClusterContentAppObserver
```

## Overview

Overview This cluster provides an interface for sending targeted commands to an Observer of a Content App on a Video Player device such as a Streaming Media Player, Smart TV or Smart Screen. The cluster server for Content App Observer is implemented by an endpoint that communicates with a Content App, such as a Casting Video Client. The cluster client for Content App Observer is implemented by a Content App endpoint. A Content App is informed of the NodeId of an Observer when a binding is set on the Content App. The Content App can then send the ContentAppMessage to the Observer (server cluster), and the Observer responds with a ContentAppMessageResponse.

## Topics

### Initializers

- [init(device:endpointID:queue:)](matter/mtrbaseclustercontentappobserver/init(device:endpointid:queue:).md)

### Instance Methods

- [contentAppMessage(with:completion:)](matter/mtrbaseclustercontentappobserver/contentappmessage(with:completion:).md)
- [readAttributeAcceptedCommandList(completion:)](matter/mtrbaseclustercontentappobserver/readattributeacceptedcommandlist(completion:).md)
- [readAttributeAttributeList(completion:)](matter/mtrbaseclustercontentappobserver/readattributeattributelist(completion:).md)
- [readAttributeClusterRevision(completion:)](matter/mtrbaseclustercontentappobserver/readattributeclusterrevision(completion:).md)
- [readAttributeFeatureMap(completion:)](matter/mtrbaseclustercontentappobserver/readattributefeaturemap(completion:).md)
- [readAttributeGeneratedCommandList(completion:)](matter/mtrbaseclustercontentappobserver/readattributegeneratedcommandlist(completion:).md)
- [subscribeAttributeAcceptedCommandList(with:subscriptionEstablished:reportHandler:)](matter/mtrbaseclustercontentappobserver/subscribeattributeacceptedcommandlist(with:subscriptionestablished:reporthandler:).md)
- [subscribeAttributeAttributeList(with:subscriptionEstablished:reportHandler:)](matter/mtrbaseclustercontentappobserver/subscribeattributeattributelist(with:subscriptionestablished:reporthandler:).md)
- [subscribeAttributeClusterRevision(with:subscriptionEstablished:reportHandler:)](matter/mtrbaseclustercontentappobserver/subscribeattributeclusterrevision(with:subscriptionestablished:reporthandler:).md)
- [subscribeAttributeFeatureMap(with:subscriptionEstablished:reportHandler:)](matter/mtrbaseclustercontentappobserver/subscribeattributefeaturemap(with:subscriptionestablished:reporthandler:).md)
- [subscribeAttributeGeneratedCommandList(with:subscriptionEstablished:reportHandler:)](matter/mtrbaseclustercontentappobserver/subscribeattributegeneratedcommandlist(with:subscriptionestablished:reporthandler:).md)

### Type Methods

- [readAttributeAcceptedCommandList(withClusterStateCache:endpoint:queue:completion:)](matter/mtrbaseclustercontentappobserver/readattributeacceptedcommandlist(withclusterstatecache:endpoint:queue:completion:).md)
- [readAttributeAttributeList(withClusterStateCache:endpoint:queue:completion:)](matter/mtrbaseclustercontentappobserver/readattributeattributelist(withclusterstatecache:endpoint:queue:completion:).md)
- [readAttributeClusterRevision(withClusterStateCache:endpoint:queue:completion:)](matter/mtrbaseclustercontentappobserver/readattributeclusterrevision(withclusterstatecache:endpoint:queue:completion:).md)
- [readAttributeFeatureMap(withClusterStateCache:endpoint:queue:completion:)](matter/mtrbaseclustercontentappobserver/readattributefeaturemap(withclusterstatecache:endpoint:queue:completion:).md)
- [readAttributeGeneratedCommandList(withClusterStateCache:endpoint:queue:completion:)](matter/mtrbaseclustercontentappobserver/readattributegeneratedcommandlist(withclusterstatecache:endpoint:queue:completion:).md)

## Relationships

### Inherits From

- [MTRGenericBaseCluster](matter/mtrgenericbasecluster.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)