GCKDiscoveryCriteria 类
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继承 NSObject、<NSCopy> 和 <NSSecureCoding>。
| - (instancetype) initWithApplicationID: |
|
(NSString *) |
applicationID |
|
| - (instancetype) initWithNamespaces: |
|
(NSSet< NSString * > *) |
namespaces |
|
| - (NSString* const) kGCKDefaultMediaReceiverApplicationID |
| - (NSOrderedSet<NSString *>*) applicationIDs |
|
readnonatomicstrong |
| - (BOOL) hasApplicationIDs |
|
readnonatomicassign |
| - (NSSet<NSString *>*) namespaces |
|
readnonatomicstrong |
| - (NSSet<NSString *>*) allSubtypes |
|
readnonatomicstrong |
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。
[null,null,["最后更新时间 (UTC)：2025-07-25。"],[[["\u003cp\u003e\u003ccode\u003eGCKDiscoveryCriteria\u003c/code\u003e filters devices during discovery based on application IDs and namespaces.\u003c/p\u003e\n"],["\u003cp\u003eIt can be initialized with a specific receiver application ID or a set of namespaces.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eapplicationIDs\u003c/code\u003e and \u003ccode\u003enamespaces\u003c/code\u003e properties provide lists of supported identifiers for filtering.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003ehasApplicationIDs\u003c/code\u003e and \u003ccode\u003ehasNamespaces\u003c/code\u003e indicate whether specific filtering criteria are applied.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eallSubtypes\u003c/code\u003e represents the criteria as a set of mDNS subtypes for low-level discovery mechanisms.\u003c/p\u003e\n"]]],[],null,["# GCKDiscoveryCriteria Class\n\n[Instance Methods](#pub-methods) \\| [Public Attributes](#pub-attribs) \\| [Properties](#properties) \nGCKDiscoveryCriteria Class Reference \n\nOverview\n--------\n\nDevice discovery filter criteria.\n\nSince\n: 4.0\n\nInherits NSObject, \\\u003cNSCopying\\\u003e, and \\\u003cNSSecureCoding\\\u003e.\n\n|----------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| Instance Method Summary ----------------------- ||\n| (instancetype) | - [initWithApplicationID:](/cast/docs/reference/ios/interface_g_c_k_discovery_criteria#a24380d2a971176bc43cd24abebce1510) |\n| | Initializes a new [GCKDiscoveryCriteria](/cast/docs/reference/ios/interface_g_c_k_discovery_criteria \"Device discovery filter criteria. \") with a receiver application ID. [More...](#a24380d2a971176bc43cd24abebce1510) |\n| ||\n| (instancetype) | - [initWithNamespaces:](/cast/docs/reference/ios/interface_g_c_k_discovery_criteria#a44657abda59243628d45b0a338043e03) |\n| | Initializes a new [GCKDiscoveryCriteria](/cast/docs/reference/ios/interface_g_c_k_discovery_criteria \"Device discovery filter criteria. \") with the given attributes. [More...](#a44657abda59243628d45b0a338043e03) |\n| ||\n\n|------------------|----------------------------------------------------------------------------------------------------------------------------------------|\n| Public Attributes ----------------- ||\n| NSString \\*const | [kGCKDefaultMediaReceiverApplicationID](/cast/docs/reference/ios/interface_g_c_k_discovery_criteria#afdc0b28918da784869cab98df3698294) |\n| | The receiver application ID for the Default Media Receiver. [More...](#afdc0b28918da784869cab98df3698294) |\n| ||\n\n|----------------------------------|--------------------------------------------------------------------------------------------------------------------|\n| Property Summary ---------------- ||\n| NSOrderedSet\\\u003c NSString \\* \\\u003e \\* | [applicationIDs](/cast/docs/reference/ios/interface_g_c_k_discovery_criteria#ac62a8989a1d83e979432a903bb00dbf4) |\n| | A list of supported receiver application IDs to test for. [More...](#ac62a8989a1d83e979432a903bb00dbf4) |\n| ||\n| BOOL | [hasApplicationIDs](/cast/docs/reference/ios/interface_g_c_k_discovery_criteria#a278562e6824ef0384ffb782208a81b7a) |\n| | Whether the discovery criteria includes any application IDs. [More...](#a278562e6824ef0384ffb782208a81b7a) |\n| ||\n| NSSet\\\u003c NSString \\* \\\u003e \\* | [namespaces](/cast/docs/reference/ios/interface_g_c_k_discovery_criteria#a297cd043c233ee70b02ba5ae742358e8) |\n| | A list of supported namespaces to test for. [More...](#a297cd043c233ee70b02ba5ae742358e8) |\n| ||\n| BOOL | [hasNamespaces](/cast/docs/reference/ios/interface_g_c_k_discovery_criteria#a03c01a7813e02e552d2e3bd705a371fc) |\n| | Whether the discovery criteria includes any namespaces. [More...](#a03c01a7813e02e552d2e3bd705a371fc) |\n| ||\n| NSSet\\\u003c NSString \\* \\\u003e \\* | [allSubtypes](/cast/docs/reference/ios/interface_g_c_k_discovery_criteria#af39a3d45e9d41cf0fd4ca4234f1d5727) |\n| | The discovery criteria as a set of mDNS subtypes. [More...](#af39a3d45e9d41cf0fd4ca4234f1d5727) |\n| ||\n\nMethod Detail\n-------------\n\n|-----------------------------------------|---|---------------|-----------------|---|\n| - (instancetype) initWithApplicationID: | | (NSString \\*) | *applicationID* | |\n\nInitializes a new [GCKDiscoveryCriteria](/cast/docs/reference/ios/interface_g_c_k_discovery_criteria \"Device discovery filter criteria. \") with a receiver application ID.\n\nParameters\n:\n\n |---------------|------------------------------|\n | applicationID | The receiver application ID. |\n\n\n|--------------------------------------|---|-----------------------------|--------------|---|\n| - (instancetype) initWithNamespaces: | | (NSSet\\\u003c NSString \\* \\\u003e \\*) | *namespaces* | |\n\nInitializes a new [GCKDiscoveryCriteria](/cast/docs/reference/ios/interface_g_c_k_discovery_criteria \"Device discovery filter criteria. \") with the given attributes.\n\nParameters\n:\n\n |------------|----------------------|\n | namespaces | A set of namespaces. |\n\n\nMember Data Documentation\n-------------------------\n\n|------------------------------------------------------------|\n| - (NSString\\* const) kGCKDefaultMediaReceiverApplicationID |\n\nThe receiver application ID for the Default Media Receiver.\n\nProperty Detail\n---------------\n\n|-----------------------------------------------------------------------------------------------------------|---------------------|\n| |--------------------------------------------------| | - (NSOrderedSet\\\u003cNSString \\*\\\u003e\\*) applicationIDs | | readnonatomicstrong |\n\nA list of supported receiver application IDs to test for. \n\n|---------------------------------------------------------------|---------------------|\n| |----------------------------| | - (BOOL) hasApplicationIDs | | readnonatomicassign |\n\nWhether the discovery criteria includes any application IDs. \n\n|-------------------------------------------------------------------------------------|---------------------|\n| |---------------------------------------| | - (NSSet\\\u003cNSString \\*\\\u003e\\*) namespaces | | readnonatomicstrong |\n\nA list of supported namespaces to test for. \n\n|-------------------------------------------------------|---------------------|\n| |------------------------| | - (BOOL) hasNamespaces | | readnonatomicassign |\n\nWhether the discovery criteria includes any namespaces. \n\n|---------------------------------------------------------------------------------------|---------------------|\n| |----------------------------------------| | - (NSSet\\\u003cNSString \\*\\\u003e\\*) allSubtypes | | readnonatomicstrong |\n\nThe discovery criteria as a set of mDNS subtypes."]]
