CLLocationManager.MaximumRegionMonitoringDistance 属性

定义

可分配给某个区域的最大边界距离(以米为单位)。

[ObjCRuntime.Unavailable(ObjCRuntime.PlatformName.WatchOS, ObjCRuntime.PlatformArchitecture.All, null)]
[ObjCRuntime.Unavailable(ObjCRuntime.PlatformName.TvOS, ObjCRuntime.PlatformArchitecture.All, null)]
public virtual double MaximumRegionMonitoringDistance { [Foundation.Export("maximumRegionMonitoringDistance")] [ObjCRuntime.Unavailable(ObjCRuntime.PlatformName.WatchOS, ObjCRuntime.PlatformArchitecture.All, null)] [ObjCRuntime.Unavailable(ObjCRuntime.PlatformName.TvOS, ObjCRuntime.PlatformArchitecture.All, null)] get; }
[ObjCRuntime.Unavailable(ObjCRuntime.PlatformName.WatchOS, ObjCRuntime.PlatformArchitecture.All, null)]
[ObjCRuntime.Unavailable(ObjCRuntime.PlatformName.TvOS, ObjCRuntime.PlatformArchitecture.All, null)]
[ObjCRuntime.Introduced(ObjCRuntime.PlatformName.MacOSX, 10, 8, ObjCRuntime.PlatformArchitecture.All, null)]
public virtual double MaximumRegionMonitoringDistance { [Foundation.Export("maximumRegionMonitoringDistance")] [ObjCRuntime.Unavailable(ObjCRuntime.PlatformName.WatchOS, ObjCRuntime.PlatformArchitecture.All, null)] [ObjCRuntime.Unavailable(ObjCRuntime.PlatformName.TvOS, ObjCRuntime.PlatformArchitecture.All, null)] [ObjCRuntime.Introduced(ObjCRuntime.PlatformName.MacOSX, 10, 8, ObjCRuntime.PlatformArchitecture.All, null)] get; }
member this.MaximumRegionMonitoringDistance : double

属性值

返回值为 -1 表示区域监视不可用。

属性

适用于