Struct NEHotspotConfigurationManager

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pub struct NEHotspotConfigurationManager { /* private fields */ }

Expand description

The NEHotspotConfigurationManager class allows an application to Add/Update/Remove Wi-Fi Network Configuraton.

Implementations§

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impl NEHotspotConfigurationManager

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pub unsafe fn sharedManager() -> Retained<NEHotspotConfigurationManager>

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pub unsafe fn applyConfiguration_completionHandler( &self, configuration: &NEHotspotConfiguration, completion_handler: Option<&DynBlock<dyn Fn(*mut NSError)>>, )

Available on crate feature block2 only.

This function adds or updates a Wi-Fi network configuration.

Parameter configuration: NEHotspotConfiguration object containing the Wi-Fi network configuration.

Parameter completionHandler: A block that will be called when add/update operation is completed. Pass nil if application does not intend to receive the result. The NSError passed to this block will be nil if the configuration is successfully stored, non-nil otherwise. If the configuration is found invalid or API encounters some other error then completionHandler is called with instance of NSError containing appropriate error code. This API attempts to join the Wi-Fi network if the configuration is successfully added or updated and the network is found nearby.

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pub unsafe fn removeConfigurationForSSID(&self, ssid: &NSString)

This function removes Wi-Fi configuration. If the joinOnce property was set to YES, invoking this method will disassociate from the Wi-Fi network after the configuration is removed.

Parameter SSID: Wi-Fi SSID for which the configuration is to be deleted.

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pub unsafe fn removeConfigurationForHS20DomainName( &self, domain_name: &NSString, )

This function removes Wi-Fi configuration.

Parameter domainName: HS2.0 domainName for which the configuration is to be deleted.

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pub unsafe fn getConfiguredSSIDsWithCompletionHandler( &self, completion_handler: &DynBlock<dyn Fn(NonNull<NSArray<NSString>>)>, )

Available on crate feature block2 only.

This function returns array of SSIDs and HS2.0 Domain Names that the calling application has configured. It returns nil if there are no networks configurred by the calling application.

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impl NEHotspotConfigurationManager

Methods declared on superclass NSObject.

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pub unsafe fn init(this: Allocated<Self>) -> Retained<Self>

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pub unsafe fn new() -> Retained<Self>

Methods from Deref<Target = NSObject>§

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pub fn doesNotRecognizeSelector(&self, sel: Sel) -> !

Handle messages the object doesn’t recognize.

See Apple’s documentation for details.

Methods from Deref<Target = AnyObject>§

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pub fn class(&self) -> &'static AnyClass

Dynamically find the class of this object.

§Panics

May panic if the object is invalid (which may be the case for objects returned from unavailable init/new methods).

§Example

Check that an instance of NSObject has the precise class NSObject.

use objc2::ClassType;
use objc2::runtime::NSObject;

let obj = NSObject::new();
assert_eq!(obj.class(), NSObject::class());

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pub unsafe fn get_ivar<T>(&self, name: &str) -> &T
where T: Encode,

👎Deprecated: this is difficult to use correctly, use Ivar::load instead.

Use Ivar::load instead.

§Safety

The object must have an instance variable with the given name, and it must be of type T.

See Ivar::load_ptr for details surrounding this.

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pub fn downcast_ref<T>(&self) -> Option<&T>
where T: DowncastTarget,

Attempt to downcast the object to a class of type T.

This is the reference-variant. Use Retained::downcast if you want to convert a retained object to another type.

§Mutable classes

Some classes have immutable and mutable variants, such as NSString and NSMutableString.

When some Objective-C API signature says it gives you an immutable class, it generally expects you to not mutate that, even though it may technically be mutable “under the hood”.

So using this method to convert a NSString to a NSMutableString, while not unsound, is generally frowned upon unless you created the string yourself, or the API explicitly documents the string to be mutable.

See Apple’s documentation on mutability and on isKindOfClass: for more details.

§Generic classes

Objective-C generics are called “lightweight generics”, and that’s because they aren’t exposed in the runtime. This makes it impossible to safely downcast to generic collections, so this is disallowed by this method.

You can, however, safely downcast to generic collections where all the type-parameters are AnyObject.

§Panics

This works internally by calling isKindOfClass:. That means that the object must have the instance method of that name, and an exception will be thrown (if CoreFoundation is linked) or the process will abort if that is not the case. In the vast majority of cases, you don’t need to worry about this, since both root objects NSObject and NSProxy implement this method.

§Examples

Cast an NSString back and forth from NSObject.

use objc2::rc::Retained;
use objc2_foundation::{NSObject, NSString};

let obj: Retained<NSObject> = NSString::new().into_super();
let string = obj.downcast_ref::<NSString>().unwrap();
// Or with `downcast`, if we do not need the object afterwards
let string = obj.downcast::<NSString>().unwrap();

Try (and fail) to cast an NSObject to an NSString.

use objc2_foundation::{NSObject, NSString};

let obj = NSObject::new();
assert!(obj.downcast_ref::<NSString>().is_none());

Try to cast to an array of strings.

use objc2_foundation::{NSArray, NSObject, NSString};

let arr = NSArray::from_retained_slice(&[NSObject::new()]);
// This is invalid and doesn't type check.
let arr = arr.downcast_ref::<NSArray<NSString>>();

This fails to compile, since it would require enumerating over the array to ensure that each element is of the desired type, which is a performance pitfall.

Downcast when processing each element instead.

use objc2_foundation::{NSArray, NSObject, NSString};

let arr = NSArray::from_retained_slice(&[NSObject::new()]);

for elem in arr {
    if let Some(data) = elem.downcast_ref::<NSString>() {
        // handle `data`
    }
}