# WhiteCommonCallbacks Class Reference (/zh-CN/api-reference/whiteboard/whiteboard-sdk/ios/classes/white-common-callbacks)

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Whiteboard iOS SDK 2.16.147 公开接口。

@interface WhiteCommonCallbacks: NSObject

## 成员 [#成员]

- [delegate](/zh-CN/api-reference/whiteboard/whiteboard-sdk/ios/classes/white-common-callbacks#//api/name/delegate)
- [slideDelegate](/zh-CN/api-reference/whiteboard/whiteboard-sdk/ios/classes/white-common-callbacks#//api/name/slideDelegate)
- [roomDelegate](/zh-CN/api-reference/whiteboard/whiteboard-sdk/ios/classes/white-common-callbacks#//api/name/roomDelegate)
- [logger:](/zh-CN/api-reference/whiteboard/whiteboard-sdk/ios/classes/white-common-callbacks#//api/name/logger:)
- [unifiedPageStateChange:](/zh-CN/api-reference/whiteboard/whiteboard-sdk/ios/classes/white-common-callbacks#//api/name/unifiedPageStateChange:)

<a id="//api/name/delegate"></a>


<a id="tasks"></a>

### `delegate` [#delegate]

<ApiSignature>

@property (nonatomic, weak) id&lt;WhiteCommonCallbackDelegate&gt; delegate;

</ApiSignature>

```text
通用回调。详见 [WhiteCommonCallbackDelegate](/zh-CN/api-reference/whiteboard/whiteboard-sdk/ios/protocols/white-common-callback-delegate)。
```

Declared in Displayer/WhiteCommonCallbacks.h

<a id="//api/name/slideDelegate"></a>

### `slideDelegate` [#slidedelegate]

<ApiSignature>

@property (nonatomic, weak) id&lt;WhiteSlideDelegate&gt; slideDelegate;

</ApiSignature>

Declared in Displayer/WhiteCommonCallbacks.h

<a id="//api/name/roomDelegate"></a>

### `roomDelegate` [#roomdelegate]

<ApiSignature>

@property (nonatomic, weak) id&lt;WhiteRoomCallbackDelegate&gt; roomDelegate;

</ApiSignature>

Declared in Displayer/WhiteCommonCallbacks.h

<a id="//api/name/logger:"></a>

### `– logger:` [#-logger]

<ApiSignature>

\- (NSString *)logger:(NSDictionary *)log;

</ApiSignature>

Declared in Displayer/WhiteCommonCallbacks.h

<a id="//api/name/unifiedPageStateChange:"></a>

### `– unifiedPageStateChange:` [#-unifiedpagestatechange]

<ApiSignature>

\- (NSString *)unifiedPageStateChange:(NSDictionary *)info;

</ApiSignature>

Declared in Displayer/WhiteCommonCallbacks.h