MLKitCommon 框架参考
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MLKModelDownloadConditions
@interface MLKModelDownloadConditions : NSObject <NSCopying>
模型下载条件的配置。
-
指明是否应通过移动网络发出下载请求。默认值为 YES
。
声明
Objective-C
@property (nonatomic, readonly) BOOL allowsCellularAccess;
-
指示是否可以在应用在后台运行时下载模型。默认为 NO
。
声明
Objective-C
@property (nonatomic, readonly) BOOL allowsBackgroundDownloading;
-
声明
Objective-C
- (nonnull instancetype)initWithAllowsCellularAccess:(BOOL)allowsCellularAccess
allowsBackgroundDownloading:
(BOOL)allowsBackgroundDownloading;
参数
allowsCellularAccess
|
|
allowsBackgroundDownloading
|
|
返回值
新的 ModelDownloadConditions
实例。
-
使用默认条件创建一个新实例。默认值在
每个实例属性的文档。
声明
Objective-C
- (nonnull instancetype)init;
返回值
新的 ModelDownloadConditions
实例。
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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\u003eMLKModelDownloadConditions\u003c/code\u003e configures conditions for downloading machine learning models.\u003c/p\u003e\n"],["\u003cp\u003eIt controls whether downloads can occur over cellular networks and in the background.\u003c/p\u003e\n"],["\u003cp\u003eDevelopers can customize these conditions using \u003ccode\u003einitWithAllowsCellularAccess:allowsBackgroundDownloading:\u003c/code\u003e or rely on the defaults with \u003ccode\u003einit\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eBy default, cellular access is allowed (\u003ccode\u003eallowsCellularAccess = YES\u003c/code\u003e), but background downloading is not (\u003ccode\u003eallowsBackgroundDownloading = NO\u003c/code\u003e).\u003c/p\u003e\n"]]],["`MLKModelDownloadConditions` configures model download settings. Key properties include `allowsCellularAccess`, enabling downloads over cellular networks (default: `YES`), and `allowsBackgroundDownloading`, allowing downloads in the background (default: `NO`). You can create instances with custom conditions using `initWithAllowsCellularAccess:allowsBackgroundDownloading:`, or use default settings with `init`. Both methods return a `ModelDownloadConditions` instance.\n"],null,["# MLKitCommon Framework Reference\n\nMLKModelDownloadConditions\n==========================\n\n\n @interface MLKModelDownloadConditions : NSObject \u003cNSCopying\u003e\n\nConfigurations for model downloading conditions.\n- `\n ``\n ``\n `\n\n ### [allowsCellularAccess](#/c:objc(cs)MLKModelDownloadConditions(py)allowsCellularAccess)\n\n `\n ` \n Indicates whether download requests should be made over a cellular network. The default is `YES`. \n\n #### Declaration\n\n Objective-C \n\n @property (nonatomic, readonly) BOOL allowsCellularAccess;\n\n- `\n ``\n ``\n `\n\n ### [allowsBackgroundDownloading](#/c:objc(cs)MLKModelDownloadConditions(py)allowsBackgroundDownloading)\n\n `\n ` \n Indicates whether the model can be downloaded while the app is in the background. The default is\n `NO`. \n\n #### Declaration\n\n Objective-C \n\n @property (nonatomic, readonly) BOOL allowsBackgroundDownloading;\n\n- `\n ``\n ``\n `\n\n ### [-initWithAllowsCellularAccess:allowsBackgroundDownloading:](#/c:objc(cs)MLKModelDownloadConditions(im)initWithAllowsCellularAccess:allowsBackgroundDownloading:)\n\n `\n ` \n Creates a new instance with the given conditions. \n\n #### Declaration\n\n Objective-C \n\n - (nonnull instancetype)initWithAllowsCellularAccess:(BOOL)allowsCellularAccess\n allowsBackgroundDownloading:\n (BOOL)allowsBackgroundDownloading;\n\n #### Parameters\n\n |-------------------------------------|-------------------------------------------------------------------------|\n | ` `*allowsCellularAccess*` ` | Whether download requests should be made over a cellular network. |\n | ` `*allowsBackgroundDownloading*` ` | Whether the model can be downloaded while the app is in the background. |\n\n #### Return Value\n\n A new `ModelDownloadConditions` instance.\n- `\n ``\n ``\n `\n\n ### [-init](#/c:objc(cs)MLKModelDownloadConditions(im)init)\n\n `\n ` \n Creates a new instance with the default conditions. The default values are specified in the\n documentation for each instance property. \n\n #### Declaration\n\n Objective-C \n\n - (nonnull instancetype)init;\n\n #### Return Value\n\n A new `ModelDownloadConditions` instance."]]