# MultiMedia\_CameraStateCallback<a name="ZH-CN_TOPIC_0000001054918109"></a>

## **Overview**<a name="section1675381828084827"></a>

Provides callbacks for camera states to configure responses to the states. 

**Since:**

1.0

**Version:**

1.0

## **Summary**<a name="section1159767180084827"></a>

## Files<a name="files"></a>

<a name="table1369014946084827"></a>
<table><thead align="left"><tr id="row228425215084827"><th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.1"><p id="p1022709099084827"><a name="p1022709099084827"></a><a name="p1022709099084827"></a>File Name</p>
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<th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.2"><p id="p181765931084827"><a name="p181765931084827"></a><a name="p181765931084827"></a>Description</p>
</th>
</tr>
</thead>
<tbody><tr id="row1565643784084827"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p257602383084827"><a name="p257602383084827"></a><a name="p257602383084827"></a><a href="camera_state_callback-h.md">camera_state_callback.h</a></p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p956707194084827"><a name="p956707194084827"></a><a name="p956707194084827"></a>Declares functions in the <strong id="b2044480876084827"><a name="b2044480876084827"></a><a name="b2044480876084827"></a>CameraStateCallback</strong> class. </p>
</td>
</tr>
</tbody>
</table>

## Data Structures<a name="nested-classes"></a>

<a name="table1795737778084827"></a>
<table><thead align="left"><tr id="row832886947084827"><th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.1"><p id="p125636485084827"><a name="p125636485084827"></a><a name="p125636485084827"></a>Data Structure Name</p>
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<th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.2"><p id="p264994596084827"><a name="p264994596084827"></a><a name="p264994596084827"></a>Description</p>
</th>
</tr>
</thead>
<tbody><tr id="row1118443758084827"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p1549810118084827"><a name="p1549810118084827"></a><a name="p1549810118084827"></a><a href="OHOS-Media-CameraStateCallback.md">OHOS::Media::CameraStateCallback</a></p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p904023208084827"><a name="p904023208084827"></a><a name="p904023208084827"></a>Provides functions to response to camera states. </p>
</td>
</tr>
</tbody>
</table>

## Functions<a name="func-members"></a>

<a name="table1297882708084827"></a>
<table><thead align="left"><tr id="row487752746084827"><th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.1"><p id="p1639021159084827"><a name="p1639021159084827"></a><a name="p1639021159084827"></a>Function Name</p>
</th>
<th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.2"><p id="p202963525084827"><a name="p202963525084827"></a><a name="p202963525084827"></a>Description</p>
</th>
</tr>
</thead>
<tbody><tr id="row940045921084827"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p329907126084827"><a name="p329907126084827"></a><a name="p329907126084827"></a><a href="MultiMedia_CameraStateCallback.md#gaa9499b36ed4aac41a67065f62342df70">OHOS::Media::CameraStateCallback::CameraStateCallback</a> ()=default</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p1276606977084827"><a name="p1276606977084827"></a><a name="p1276606977084827"></a>&nbsp;</p>
<p id="p1620582631084827"><a name="p1620582631084827"></a><a name="p1620582631084827"></a>A constructor used to create a <strong id="b1148159218084827"><a name="b1148159218084827"></a><a name="b1148159218084827"></a><a href="OHOS-Media-CameraStateCallback.md">CameraStateCallback</a></strong> instance. </p>
</td>
</tr>
<tr id="row1810503578084827"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p1040635737084827"><a name="p1040635737084827"></a><a name="p1040635737084827"></a><a href="MultiMedia_CameraStateCallback.md#ga80ba3b334f93c4d9cab07bc749813f9a">OHOS::Media::CameraStateCallback::~CameraStateCallback</a> ()</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p1020068516084827"><a name="p1020068516084827"></a><a name="p1020068516084827"></a>virtual&nbsp;</p>
<p id="p1422800832084827"><a name="p1422800832084827"></a><a name="p1422800832084827"></a>A destructor used to delete the <strong id="b36778126084827"><a name="b36778126084827"></a><a name="b36778126084827"></a><a href="OHOS-Media-CameraStateCallback.md">CameraStateCallback</a></strong> instance. </p>
</td>
</tr>
<tr id="row1009361894084827"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p870735151084827"><a name="p870735151084827"></a><a name="p870735151084827"></a><a href="MultiMedia_CameraStateCallback.md#ga29901c517d444a013d44a99350905390">OHOS::Media::CameraStateCallback::OnCreated</a> (<a href="OHOS-Media-Camera.md">Camera</a> &amp;c)</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p1125667152084827"><a name="p1125667152084827"></a><a name="p1125667152084827"></a>virtual void&nbsp;</p>
<p id="p646360118084827"><a name="p646360118084827"></a><a name="p646360118084827"></a>Called when the camera is successfully created. </p>
</td>
</tr>
<tr id="row269806354084827"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p300167279084827"><a name="p300167279084827"></a><a name="p300167279084827"></a><a href="MultiMedia_CameraStateCallback.md#ga9844a6e2c1d4295fe23537a918bdc683">OHOS::Media::CameraStateCallback::OnCreateFailed</a> (const std::string cameraId, int32_t errorCode)</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p1428012813084827"><a name="p1428012813084827"></a><a name="p1428012813084827"></a>virtual void&nbsp;</p>
<p id="p887183473084827"><a name="p887183473084827"></a><a name="p887183473084827"></a>Called when the camera fails to be created. </p>
</td>
</tr>
<tr id="row1629314363084827"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p1086531488084827"><a name="p1086531488084827"></a><a name="p1086531488084827"></a><a href="MultiMedia_CameraStateCallback.md#ga4351c9011831fe3e93d986e5a287fe80">OHOS::Media::CameraStateCallback::OnReleased</a> (<a href="OHOS-Media-Camera.md">Camera</a> &amp;c)</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p204442341084827"><a name="p204442341084827"></a><a name="p204442341084827"></a>virtual void&nbsp;</p>
<p id="p1813439279084827"><a name="p1813439279084827"></a><a name="p1813439279084827"></a>Called when the camera is released. </p>
</td>
</tr>
<tr id="row1947687020084827"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p1297754692084827"><a name="p1297754692084827"></a><a name="p1297754692084827"></a><a href="MultiMedia_CameraStateCallback.md#ga5a0115afe9c5a7ddf8e9acd93a03fd21">OHOS::Media::CameraStateCallback::OnConfigured</a> (<a href="OHOS-Media-Camera.md">Camera</a> &amp;c)</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p1514261856084827"><a name="p1514261856084827"></a><a name="p1514261856084827"></a>virtual void&nbsp;</p>
<p id="p1569484285084827"><a name="p1569484285084827"></a><a name="p1569484285084827"></a>Called when the camera is configured. </p>
</td>
</tr>
<tr id="row1364231107084827"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p26477790084827"><a name="p26477790084827"></a><a name="p26477790084827"></a><a href="MultiMedia_CameraStateCallback.md#gab334119760044ef810ce8ac2301c0d16">OHOS::Media::CameraStateCallback::OnConfigureFailed</a> (const std::string cameraId, int32_t errorCode)</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p1438238025084827"><a name="p1438238025084827"></a><a name="p1438238025084827"></a>virtual void&nbsp;</p>
<p id="p506567023084827"><a name="p506567023084827"></a><a name="p506567023084827"></a>Called when the camera fails to be configured. </p>
</td>
</tr>
</tbody>
</table>

## **Details**<a name="section1560280634084827"></a>

## **Function Documentation**<a name="section705984722084827"></a>

## CameraStateCallback\(\)<a name="gaa9499b36ed4aac41a67065f62342df70"></a>

```
OHOS::Media::CameraStateCallback::CameraStateCallback ()
```

 **Description:**

A constructor used to create a  **[CameraStateCallback](OHOS-Media-CameraStateCallback.md)**  instance. 

## OnConfigured\(\)<a name="ga5a0115afe9c5a7ddf8e9acd93a03fd21"></a>

```
virtual void OHOS::Media::CameraStateCallback::OnConfigured ([Camera](OHOS-Media-Camera.md) & c)
```

 **Description:**

Called when the camera is configured. 

**Parameters:**

<a name="table679506986084827"></a>
<table><thead align="left"><tr id="row1907172101084827"><th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.1"><p id="p91944965084827"><a name="p91944965084827"></a><a name="p91944965084827"></a>Name</p>
</th>
<th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.2"><p id="p759053833084827"><a name="p759053833084827"></a><a name="p759053833084827"></a>Description</p>
</th>
</tr>
</thead>
<tbody><tr id="row175286564084827"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 ">c</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 ">camera Indicates the <strong id="b8620837084827"><a name="b8620837084827"></a><a name="b8620837084827"></a><a href="OHOS-Media-Camera.md">Camera</a></strong> object. </td>
</tr>
</tbody>
</table>

## OnConfigureFailed\(\)<a name="gab334119760044ef810ce8ac2301c0d16"></a>

```
virtual void OHOS::Media::CameraStateCallback::OnConfigureFailed (const std::string cameraId, int32_t errorCode )
```

 **Description:**

Called when the camera fails to be configured. 

**Parameters:**

<a name="table870733874084827"></a>
<table><thead align="left"><tr id="row419196024084827"><th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.1"><p id="p1278881248084827"><a name="p1278881248084827"></a><a name="p1278881248084827"></a>Name</p>
</th>
<th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.2"><p id="p802016976084827"><a name="p802016976084827"></a><a name="p802016976084827"></a>Description</p>
</th>
</tr>
</thead>
<tbody><tr id="row1747228707084827"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 ">c</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 ">Indicates the <strong id="b60390858084827"><a name="b60390858084827"></a><a name="b60390858084827"></a><a href="OHOS-Media-Camera.md">Camera</a></strong> object. </td>
</tr>
<tr id="row635768777084827"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 ">errorCode</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 ">Indicates the error code. </td>
</tr>
</tbody>
</table>

## OnCreated\(\)<a name="ga29901c517d444a013d44a99350905390"></a>

```
virtual void OHOS::Media::CameraStateCallback::OnCreated ([Camera](OHOS-Media-Camera.md) & c)
```

 **Description:**

Called when the camera is successfully created. 

**Parameters:**

<a name="table712624233084827"></a>
<table><thead align="left"><tr id="row701037466084827"><th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.1"><p id="p901310544084827"><a name="p901310544084827"></a><a name="p901310544084827"></a>Name</p>
</th>
<th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.2"><p id="p2075393886084827"><a name="p2075393886084827"></a><a name="p2075393886084827"></a>Description</p>
</th>
</tr>
</thead>
<tbody><tr id="row914090417084827"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 ">c</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 ">Indicates the <strong id="b518302419084827"><a name="b518302419084827"></a><a name="b518302419084827"></a><a href="OHOS-Media-Camera.md">Camera</a></strong> object. </td>
</tr>
</tbody>
</table>

## OnCreateFailed\(\)<a name="ga9844a6e2c1d4295fe23537a918bdc683"></a>

```
virtual void OHOS::Media::CameraStateCallback::OnCreateFailed (const std::string cameraId, int32_t errorCode )
```

 **Description:**

Called when the camera fails to be created. 

**Parameters:**

<a name="table1415989738084827"></a>
<table><thead align="left"><tr id="row982603599084827"><th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.1"><p id="p1925418337084827"><a name="p1925418337084827"></a><a name="p1925418337084827"></a>Name</p>
</th>
<th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.2"><p id="p913521289084827"><a name="p913521289084827"></a><a name="p913521289084827"></a>Description</p>
</th>
</tr>
</thead>
<tbody><tr id="row820059697084827"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 ">cameraId</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 ">Indicates the camera ID. </td>
</tr>
<tr id="row1182882658084827"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 ">errorCode</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 ">Indicates the error code. </td>
</tr>
</tbody>
</table>

## OnReleased\(\)<a name="ga4351c9011831fe3e93d986e5a287fe80"></a>

```
virtual void OHOS::Media::CameraStateCallback::OnReleased ([Camera](OHOS-Media-Camera.md) & c)
```

 **Description:**

Called when the camera is released. 

**Parameters:**

<a name="table576087250084827"></a>
<table><thead align="left"><tr id="row228280742084827"><th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.1"><p id="p1236403163084827"><a name="p1236403163084827"></a><a name="p1236403163084827"></a>Name</p>
</th>
<th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.2"><p id="p1052293797084827"><a name="p1052293797084827"></a><a name="p1052293797084827"></a>Description</p>
</th>
</tr>
</thead>
<tbody><tr id="row1026462262084827"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 ">c</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 ">Indicates the <strong id="b1658377855084827"><a name="b1658377855084827"></a><a name="b1658377855084827"></a><a href="OHOS-Media-Camera.md">Camera</a></strong> object. </td>
</tr>
</tbody>
</table>

## \~CameraStateCallback\(\)<a name="ga80ba3b334f93c4d9cab07bc749813f9a"></a>

```
virtual OHOS::Media::CameraStateCallback::~CameraStateCallback ()
```

 **Description:**

A destructor used to delete the  **[CameraStateCallback](OHOS-Media-CameraStateCallback.md)**  instance.