IDNA Class
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Abstract base class for IDNA processing.
[Android.Runtime.Register("android/icu/text/IDNA", ApiSince=24, DoNotGenerateAcw=true)]
public abstract class IDNA : Java.Lang.Object[<Android.Runtime.Register("android/icu/text/IDNA", ApiSince=24, DoNotGenerateAcw=true)>]
type IDNA = class
inherit Object- Inheritance
- Attributes
Remarks
Abstract base class for IDNA processing. See http://www.unicode.org/reports/tr46/ and http://www.ietf.org/rfc/rfc3490.txt
The IDNA class is not intended for public subclassing.
The non-static methods implement UTS #46 and IDNA2008. IDNA2008 is implemented according to UTS #46, see #getUTS46Instance(int).
IDNA2003 is obsolete. The static methods implement IDNA2003. They are all deprecated.
IDNA2003 API Overview:
The static IDNA API methods implement the IDNA protocol as defined in the IDNA RFC. The draft defines 2 operations: ToASCII and ToUnicode. Domain labels containing non-ASCII code points are required to be processed by ToASCII operation before passing it to resolver libraries. Domain names that are obtained from resolver libraries are required to be processed by ToUnicode operation before displaying the domain name to the user. IDNA requires that implementations process input strings with Nameprep, which is a profile of Stringprep , and then with Punycode. Implementations of IDNA MUST fully implement Nameprep and Punycode; neither Nameprep nor Punycode are optional. The input and output of ToASCII and ToUnicode operations are Unicode and are designed to be chainable, i.e., applying ToASCII or ToUnicode operations multiple times to an input string will yield the same result as applying the operation once. ToUnicode(ToUnicode(ToUnicode...(ToUnicode(string)))) == ToUnicode(string) ToASCII(ToASCII(ToASCII...(ToASCII(string))) == ToASCII(string).
Java documentation for android.icu.text.IDNA.
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.
Constructors
| Name | Description |
|---|---|
| IDNA(IntPtr, JniHandleOwnership) | |
Fields
| Name | Description |
|---|---|
| CheckBidi |
Obsolete.
IDNA option to check for whether the input conforms to the BiDi rules. |
| CheckContextj |
Obsolete.
IDNA option to check for whether the input conforms to the CONTEXTJ rules. |
| CheckContexto |
Obsolete.
IDNA option to check for whether the input conforms to the CONTEXTO rules. |
| Default |
Obsolete.
Default options value: None of the other options are set. |
| NontransitionalToAscii |
Obsolete.
IDNA option for nontransitional processing in ToASCII(). |
| NontransitionalToUnicode |
Obsolete.
IDNA option for nontransitional processing in ToUnicode(). |
| UseStd3Rules |
Obsolete.
Option to check whether the input conforms to the STD3 ASCII rules, for example the restriction of labels to LDH characters (ASCII Letters, Digits and Hyphen-Minus). |
Properties
| Name | Description |
|---|---|
| Class |
Returns the runtime class of this |
| Handle |
The handle to the underlying Android instance. (Inherited from Object) |
| JniIdentityHashCode |
Gets the identity hash code assigned to this Java peer by the interop runtime. (Inherited from Object) |
| JniManagedPeerState | (Inherited from JavaObject) |
| JniPeerMembers | |
| PeerReference |
Gets the JNI object reference for this Java peer. (Inherited from Object) |
| ThresholdClass | |
| ThresholdType | |
Methods
| Name | Description |
|---|---|
| Clone() |
Creates and returns a copy of this object. (Inherited from Object) |
| Construct(JniObjectReference, JniObjectReferenceOptions) | (Inherited from JavaObject) |
| Dispose() |
Releases the resources held by this Java peer. (Inherited from Object) |
| Dispose(Boolean) |
Releases the resources held by this Java peer. (Inherited from Object) |
| DisposeUnlessReferenced() | (Inherited from JavaObject) |
| Equals(Object) | (Inherited from JavaObject) |
| Equals(Object) |
Indicates whether some other object is "equal to" this one. (Inherited from Object) |
| GetHashCode() |
Returns a hash code value for the object. (Inherited from Object) |
| GetUTS46Instance(IDNAOptions) |
Returns an IDNA instance which implements UTS #46. |
| JavaFinalize() |
Obsolete.
Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. (Inherited from Object) |
| LabelToASCII(ICharSequence, StringBuilder, IDNA+Info) |
Converts a single domain name label into its ASCII form for DNS lookup. |
| LabelToASCII(String, StringBuilder, IDNA+Info) | |
| LabelToUnicode(ICharSequence, StringBuilder, IDNA+Info) |
Converts a single domain name label into its Unicode form for human-readable display. |
| LabelToUnicode(String, StringBuilder, IDNA+Info) | |
| NameToASCII(ICharSequence, StringBuilder, IDNA+Info) |
Converts a whole domain name into its ASCII form for DNS lookup. |
| NameToASCII(String, StringBuilder, IDNA+Info) | |
| NameToUnicode(ICharSequence, StringBuilder, IDNA+Info) |
Converts a whole domain name into its Unicode form for human-readable display. |
| NameToUnicode(String, StringBuilder, IDNA+Info) | |
| Notify() |
Wakes up a single thread that is waiting on this object's monitor. (Inherited from Object) |
| NotifyAll() |
Wakes up all threads that are waiting on this object's monitor. (Inherited from Object) |
| SetHandle(IntPtr, JniHandleOwnership) |
Sets the Handle property. (Inherited from Object) |
| SetPeerReference(JniObjectReference, JniObjectReferenceOptions) | (Inherited from JavaObject) |
| ToArray<T>() |
Creates a managed array from this Java array wrapper. (Inherited from Object) |
| ToString() |
Returns a string representation of the object. (Inherited from Object) |
| UnregisterFromRuntime() |
Unregisters this Java peer from the interop runtime. (Inherited from Object) |
| Wait() |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>. (Inherited from Object) |
| Wait(Int64, Int32) |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object) |
| Wait(Int64) |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object) |
Explicit Interface Implementations
| Name | Description |
|---|---|
| IJavaPeerable.Disposed() | (Inherited from JavaObject) |
| IJavaPeerable.Finalized() | (Inherited from JavaObject) |
| IJavaPeerable.JniObjectReferenceControlBlock | (Inherited from JavaObject) |
| IJavaPeerable.SetJniIdentityHashCode(Int32) | (Inherited from JavaObject) |
| IJavaPeerable.SetJniManagedPeerState(JniManagedPeerStates) | (Inherited from JavaObject) |
| IJavaPeerable.SetPeerReference(JniObjectReference) | (Inherited from JavaObject) |
Extension Methods
| Name | Description |
|---|---|
| GetJniTypeName(IJavaPeerable) |
Gets the JNI name of the type of the instance |
| JavaAs<TResult>(IJavaPeerable) |
Try to coerce |
| JavaCast<TResult>(IJavaObject) |
Performs an Android runtime-checked type conversion. |
| JavaCast<TResult>(IJavaObject) | |
| TryJavaCast<TResult>(IJavaPeerable, TResult) |
Try to coerce |