GCKSession 类
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此类继承 NSObject。
由 GCKCastSession 继承。
| - (instancetype) initWithDevice: |
|
(GCKDevice *) |
device |
| traits: |
|
(nullable GCKSessionTraits *) |
traits |
| sessionID: |
|
(nullable NSString *) |
sessionID |
|
|
| |
使用默认选项为指定设备初始化新的会话对象。
- Parameters
-
| device | The device. |
| traits | The session traits. |
| sessionID | The session ID of an existing session, if this object will be used to resume a session; otherwise nil if it will be used to start a new session. |
| - (instancetype) initWithDevice: |
|
(GCKDevice *) |
device |
| traits: |
|
(nullable GCKSessionTraits *) |
traits |
| sessionID: |
|
(nullable NSString *) |
sessionID |
| sessionOptions: |
|
(nullable GCKSessionOptions *) |
sessionOptions |
|
|
| |
为指定设备初始化新的会话对象。
- Parameters
-
| device | The device. |
| traits | The session traits. |
| sessionID | The session ID of an existing session, if this object will be used to resume a session; otherwise nil if it will be used to start a new session. |
| sessionOptions | The session options, if any; otherwise nil. |
- 开始时间
- 4.0
设置设备的音量。
这是一项异步操作。默认实现是一个空操作，该操作会使请求失败并显示 GCKErrorCodeUnsupportedFeature 错误。
- Parameters
-
- 返回
- 一个用于跟踪请求的 GCKRequest 对象。
- 开始时间
- 3.4；在之前的框架版本中，此方法返回
void。
设置设备的静音状态。
这是一项异步操作。默认实现是一个空操作，该操作会使请求失败并显示 GCKErrorCodeUnsupportedFeature 错误。
- Parameters
-
- 返回
- 一个用于跟踪请求的 GCKRequest 对象。
- 开始时间
- 3.4；在之前的框架版本中，此方法返回
void。
结束具有指定操作的会话。
这是一项异步操作。必须被子类替换。
- Parameters
-
| action | The action to take when ending the session; see GCKSessionEndAction for more details. |
由“GCKSession(Protected)”类别提供。
| - (void) notifyDidStartWithSessionID: |
|
(NSString *) |
sessionID |
|
| - (void) notifyDidFailToStartWithError: |
|
(GCKError *) |
error |
|
| - (void) notifyDidEndWithError: |
|
(nullable NSError *) |
error |
| willTryToResume: |
|
(BOOL) |
willTryToResume |
|
|
| |
由子类调用，以通知框架会话已结束。
- Parameters
-
| error | The error that caused the session to end, if any. Should be nil if the session was ended intentionally. |
| willTryToResume | Whether the session will try to resume itself automatically. |
由“GCKSession(Protected)”类别提供。
| - (void) notifyDidReceiveDeviceVolume: |
|
(float) |
volume |
| muted: |
|
(BOOL) |
muted |
|
|
| |
由子类调用，以通知框架已从设备收到更新后的设备音量和静音状态。
- Parameters
-
| volume | The device's current volume. Must be in the range [0, 1.0]; |
| muted | The device's current mute state. |
由“GCKSession(Protected)”类别提供。
| - (void) notifyDidReceiveDeviceStatus: |
|
(nullable NSString *) |
statusText |
|
| - (GCKSessionOptions*) sessionOptions |
|
readnonatomicstrong |
| - (GCKConnectionState) connectionState |
|
readnonatomicassign |
| - (NSString*) deviceStatusText |
|
readnonatomiccopy |
| - (float) currentDeviceVolume |
|
readnonatomicassign |
| - (BOOL) currentDeviceMuted |
|
readnonatomicassign |
当前媒体元数据（如果有）。
如果会话不支持媒体命名空间或接收器上当前未加载任何媒体，则值为 nil。
如未另行说明，那么本页面中的内容已根据知识共享署名 4.0 许可获得了许可，并且代码示例已根据 Apache 2.0 许可获得了许可。有关详情，请参阅 Google 开发者网站政策。Java 是 Oracle 和/或其关联公司的注册商标。
最后更新时间 (UTC)：2025-07-25。
[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["没有我需要的信息","missingTheInformationINeed","thumb-down"],["太复杂/步骤太多","tooComplicatedTooManySteps","thumb-down"],["内容需要更新","outOfDate","thumb-down"],["翻译问题","translationIssue","thumb-down"],["示例/代码问题","samplesCodeIssue","thumb-down"],["其他","otherDown","thumb-down"]],["最后更新时间 (UTC)：2025-07-25。"],[],["The GCKSession class represents a session with a receiver device, requiring subclasses to implement `start` and `endWithAction:` methods. Subclasses must also use methods like `notifyDidStartWithSessionID:` to communicate state changes. Optional methods like `setDeviceVolume:`, `setDeviceMuted:`, and `remoteMediaClient` are available for supported devices. Sessions are managed by `GCKSessionManager`, which uses `GCKDeviceProvider` to create them and delegates requests to `GCKSession`. Key properties include `device`, `sessionID`, and connection state, with methods to initialize, set device volume/mute state, start/end a session, and notify the framework of session status changes.\n"]]
