TimeZone Class
Definition
Important
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TimeZone represents a time zone offset, and also figures out daylight
savings.
[Android.Runtime.Register("java/util/TimeZone", DoNotGenerateAcw=true)]
public abstract class TimeZone : Java.Lang.Object, IDisposable, Java.Interop.IJavaPeerable, Java.IO.ISerializable, Java.Lang.ICloneable[<Android.Runtime.Register("java/util/TimeZone", DoNotGenerateAcw=true)>]
type TimeZone = class
inherit Object
interface ISerializable
interface IJavaObject
interface IDisposable
interface IJavaPeerable
interface ICloneable- Inheritance
- Derived
- Attributes
- Implements
Remarks
TimeZone represents a time zone offset, and also figures out daylight savings.
Typically, you get a TimeZone using getDefault which creates a TimeZone based on the time zone where the program is running. For example, for a program running in Japan, getDefault creates a TimeZone object based on Japanese Standard Time.
You can also get a TimeZone using getTimeZone along with a time zone ID. For instance, the time zone ID for the U.S. Pacific Time zone is "America/Los_Angeles". So, you can get a U.S. Pacific Time TimeZone object with: <blockquote>
TimeZone tz = TimeZone.getTimeZone("America/Los_Angeles");
</blockquote> You can use the getAvailableIDs method to iterate through all the supported time zone IDs. You can then choose a supported ID to get a TimeZone. If the time zone you want is not represented by one of the supported IDs, then a custom time zone ID can be specified to produce a TimeZone. The syntax of a custom time zone ID is:
<blockquote>
<a id="CustomID"><i>CustomID:</i></a>
{@code GMT} <i>Sign</i> <i>Hours</i> {@code :} <i>Minutes</i>
{@code GMT} <i>Sign</i> <i>Hours</i> <i>Minutes</i>
{@code GMT} <i>Sign</i> <i>Hours</i>
<i>Sign:</i> one of
{@code + -}
<i>Hours:</i>
<i>Digit</i>
<i>Digit</i> <i>Digit</i>
<i>Minutes:</i>
<i>Digit</i> <i>Digit</i>
<i>Digit:</i> one of
{@code 0 1 2 3 4 5 6 7 8 9}
</blockquote>
Hours must be between 0 to 23 and Minutes must be between 00 to 59. For example, "GMT+10" and "GMT+0010" mean ten hours and ten minutes ahead of GMT, respectively.
The format is locale independent and digits must be taken from the Basic Latin block of the Unicode standard. No daylight saving time transition schedule can be specified with a custom time zone ID. If the specified string doesn't match the syntax, "GMT" is used.
When creating a TimeZone, the specified custom time zone ID is normalized in the following syntax: <blockquote>
<a id="NormalizedCustomID"><i>NormalizedCustomID:</i></a>
{@code GMT} <i>Sign</i> <i>TwoDigitHours</i> {@code :} <i>Minutes</i>
<i>Sign:</i> one of
{@code + -}
<i>TwoDigitHours:</i>
<i>Digit</i> <i>Digit</i>
<i>Minutes:</i>
<i>Digit</i> <i>Digit</i>
<i>Digit:</i> one of
{@code 0 1 2 3 4 5 6 7 8 9}
</blockquote> For example, TimeZone.getTimeZone("GMT-8").getID() returns "GMT-08:00".
<h2>Three-letter time zone IDs</h2>
For compatibility with JDK 1.1.x, some other three-letter time zone IDs (such as "PST", "CTT", "AST") are also supported. However, <strong>their use is deprecated</strong> because the same abbreviation is often used for multiple time zones (for example, "CST" could be U.S. "Central Standard Time" and "China Standard Time"), and the Java platform can then only recognize one of them.
Added in 1.1.
Java documentation for java.util.TimeZone.
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
| TimeZone() |
Sole constructor. |
| TimeZone(IntPtr, JniHandleOwnership) |
A constructor used when creating managed representations of JNI objects; called by the runtime. |
Fields
| Long |
Obsolete.
A style specifier for |
| Short |
Obsolete.
A style specifier for |
Properties
| Class |
Returns the runtime class of this |
| Default |
Gets the default |
| DisplayName |
Returns a long standard time name of this |
| DSTSavings |
Returns the amount of time to be added to local standard time to get local wall clock time. |
| Handle |
The handle to the underlying Android instance. (Inherited from Object) |
| ID |
Gets the ID of this time zone. -or- Sets the time zone ID. |
| JniIdentityHashCode | (Inherited from Object) |
| JniPeerMembers | |
| PeerReference | (Inherited from Object) |
| RawOffset |
Returns the offset in milliseconds from UTC of this time zone's standard time. |
| ThresholdClass |
This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. |
| ThresholdType |
This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. |
Methods
| Clone() |
Creates a copy of this |
| Dispose() | (Inherited from Object) |
| Dispose(Boolean) | (Inherited from Object) |
| Equals(Object) |
Indicates whether some other object is "equal to" this one. (Inherited from Object) |
| GetAvailableIDs() |
Gets all the available IDs supported. |
| GetAvailableIDs(Int32) |
Gets the available IDs according to the given time zone offset in milliseconds. |
| GetDisplayName(Boolean, TimeZoneStyle, Locale) |
Returns the |
| GetDisplayName(Boolean, TimeZoneStyle) |
Returns a name in the specified |
| GetDisplayName(Locale) |
Returns a long standard time name of this |
| GetHashCode() |
Returns a hash code value for the object. (Inherited from Object) |
| GetOffset(Int32, Int32, Int32, Int32, Int32, Int32) |
Gets the time zone offset, for current date, modified in case of daylight savings. |
| GetOffset(Int64) |
Returns the offset of this time zone from UTC at the specified date. |
| GetTimeZone(String) |
Gets the |
| GetTimeZone(ZoneId) |
Gets the |
| HasSameRules(TimeZone) |
Returns true if this zone has the same rule and offset as another zone. |
| InDaylightTime(Date) |
Queries if the given |
| JavaFinalize() |
Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. (Inherited from Object) |
| 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) |
| ObservesDaylightTime() |
Returns |
| SetHandle(IntPtr, JniHandleOwnership) |
Sets the Handle property. (Inherited from Object) |
| ToArray<T>() | (Inherited from Object) |
| ToString() |
Returns a string representation of the object. (Inherited from Object) |
| ToZoneId() |
Converts this |
| UnregisterFromRuntime() | (Inherited from Object) |
| UseDaylightTime() |
Queries if this |
| 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
| IJavaPeerable.Disposed() | (Inherited from Object) |
| IJavaPeerable.DisposeUnlessReferenced() | (Inherited from Object) |
| IJavaPeerable.Finalized() | (Inherited from Object) |
| IJavaPeerable.JniManagedPeerState | (Inherited from Object) |
| IJavaPeerable.SetJniIdentityHashCode(Int32) | (Inherited from Object) |
| IJavaPeerable.SetJniManagedPeerState(JniManagedPeerStates) | (Inherited from Object) |
| IJavaPeerable.SetPeerReference(JniObjectReference) | (Inherited from Object) |
Extension Methods
| JavaCast<TResult>(IJavaObject) |
Performs an Android runtime-checked type conversion. |
| JavaCast<TResult>(IJavaObject) | |
| GetJniTypeName(IJavaPeerable) | |