# ServiceCollaborationCallback

> phone 5.0.0(12)+ | 2in1 5.0.1(13)+ | tablet 5.0.0(12)+ | tv 5.1.1(19)+

## 概述

> phone | 2in1 | tablet | tv

传给[HMS_ServiceCollaboration_StartCollaboration](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/servicecollaboration-capi-module#hms_servicecollaboration_startcollaboration)或[HMS_ServiceCollaboration_StartCollaborationV2](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/servicecollaboration-capi-module#hms_servicecollaboration_startcollaborationv2)的回调方法，用来传递跨设备互通的状态信息。

**起始版本：** 5.0.0(12)

**相关模块：** [ServiceCollaboration](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/servicecollaboration-capi-module)

**所在头文件：** [service_collaboration_api.h](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/servicecollaboration-capi-h)

## 汇总

> phone | 2in1 | tablet | tv

### 成员变量

> phone | 2in1 | tablet | tv

|名称|描述|
|:---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|:----------------|
|int32_t(* [OnEvent](#onevent) )([ServiceCollaborationEventCode](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/servicecollaboration-capi-module#servicecollaborationeventcode-1) code, uint32_t extraCode)|在跨设备互通服务状态变化时被调用。|
|int32_t(* [OnDataCallback](#ondatacallback) )([ServiceCollaborationEventCode](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/servicecollaboration-capi-module#servicecollaborationeventcode-1) code, [ServiceCollaborationDataType](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/servicecollaboration-capi-module#servicecollaborationdatatype-1) dataType, uint32_t dataSize, char *data)|在跨设备互通服务数据返回时被调用。|

## 结构体成员变量说明

> phone | 2in1 | tablet | tv

### OnDataCallback

> phone 5.0.0(12)+ | 2in1 5.0.1(13)+ | tablet 5.0.0(12)+ | tv 5.1.1(19)+

```c
int32_t(* ServiceCollaborationCallback::OnDataCallback) (ServiceCollaborationEventCode code, ServiceCollaborationDataType dataType, uint32_t dataSize, char *data)
```

**描述**

在跨设备互通服务数据返回时被调用。

**参数：**

|名称|描述|
|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------------|:------------|
|[ServiceCollaborationEventCode](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/servicecollaboration-capi-module#servicecollaborationeventcode-1) code|错误码。|
|[ServiceCollaborationDataType](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/servicecollaboration-capi-module#servicecollaborationdatatype-1) dataType|回传数据类型。|
|uint32_t dataSize|数据大小，单位：byte。|
|char *data|数据。|

### OnEvent

> phone 5.0.0(12)+ | 2in1 5.0.1(13)+ | tablet 5.0.0(12)+ | tv 5.1.1(19)+

```c
int32_t(* ServiceCollaborationCallback::OnEvent) (ServiceCollaborationEventCode code, uint32_t extraCode)
```

**描述**

在跨设备互通服务状态变化时被调用。

**参数：**

|名称|描述|
|:-----------------------------------------------------------------------------------------------------------------------------------------------------------------------|:-------------------|
|[ServiceCollaborationEventCode](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/servicecollaboration-capi-module#servicecollaborationeventcode-1) code|错误码。|
|uint32_t extraCode|拓展状态码，携带错误码未提供的额外信息。|