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Added in API level 1

Summary: Methods | [Expand All]

Annotation

public interface Annotation

java.lang.annotation.Annotation

Known Indirect Subclasses

AnyThread, and 36 others.

AnyThread	Denotes that the annotated method can be called from any thread (e.g.
Bindable	The Bindable annotation should be applied to any getter accessor method of an `Observable` class.
BindingAdapter	BindingAdapter is applied to methods that are used to manipulate how values with expressions are set to views.
BindingConversion	Annotate methods that are used to automatically convert from the expression type to the value used in the setter.
BindingMethod	Used within an `BindingMethods` annotation to describe a renaming of an attribute to the setter used to set that attribute.
BindingMethods	Used to enumerate attribute-to-setter renaming.
ContentRecommendation.ContentMaturity
ContentRecommendation.ContentPricing
ContentRecommendation.ContentStatus
ContentRecommendation.ContentType
ContentRecommendation.IntentType
CoordinatorLayout.DefaultBehavior	Defines the default `CoordinatorLayout.Behavior` of a `View` class.
Deprecated	A program element annotated @Deprecated is one that programmers are discouraged from using, typically because it is dangerous, or because a better alternative exists.
Dimension	Denotes that an integer parameter, field or method return value is expected to represent a dimension.
Dimension.Unit
Documented	Indicates that annotations with a type are to be documented by javadoc and similar tools by default.
FlakyTest	This @interface was deprecated in API level 24. Use FlakyTest instead. New tests should be written using the Android Testing Support Library.
FunctionalInterface	An informative annotation type used to indicate that an interface type declaration is intended to be a functional interface as defined by the Java Language Specification.
Inherited	Indicates that an annotation type is automatically inherited.
InverseBindingAdapter	InverseBindingAdapter is associated with a method used to retrieve the value for a View when setting values gathered from the View.
InverseBindingMethod	InverseBindingMethod is used to identify how to listen for changes to a View property and which getter method to call.
InverseBindingMethods	Used to enumerate attribute, getter, and event association.
JavascriptInterface	Annotation that allows exposing methods to JavaScript.
Keep	Denotes that the annotated element should not be removed when the code is minified at build time.
LargeTest	This @interface was deprecated in API level 24. Use LargeTest instead. New tests should be written using the Android Testing Support Library.
MediumTest	This @interface was deprecated in API level 24. Use MediumTest instead. New tests should be written using the Android Testing Support Library.
Override	Indicates that a method declaration is intended to override a method declaration in a supertype.
PermissionChecker.PermissionResult
Px	Denotes that an integer parameter, field or method return value is expected to represent a pixel dimension.
RecyclerView.ItemAnimator.AdapterChanges	The set of flags that might be passed to `recordPreLayoutInformation(State, ViewHolder, int, List)`.
RemoteViews.RemoteView	This annotation indicates that a subclass of View is alllowed to be used with the `RemoteViews` mechanism.
Repeatable	The annotation type `java.lang.annotation.Repeatable` is used to indicate that the annotation type whose declaration it (meta-)annotates is repeatable.
RequiresApi	Denotes that the annotated element should only be called on the given API level or higher.
Retention	Indicates how long annotations with the annotated type are to be retained.
SafeVarargs	A programmer assertion that the body of the annotated method or constructor does not perform potentially unsafe operations on its varargs parameter.
SmallTest	This @interface was deprecated in API level 24. Use SmallTest instead. New tests should be written using the Android Testing Support Library.
Smoke	This @interface was deprecated in API level 24. New tests should be written using the Android Testing Support Library.
Suppress	This @interface was deprecated in API level 24. Use Suppress instead. New tests should be written using the Android Testing Support Library.
SuppressLint	Indicates that Lint should ignore the specified warnings for the annotated element.
SuppressWarnings	Indicates that the named compiler warnings should be suppressed in the annotated element (and in all program elements contained in the annotated element).
Target	Indicates the kinds of program element to which an annotation type is applicable.
TargetApi	Indicates that Lint should treat this type as targeting a given API level, no matter what the project target is.
TestTarget	This @interface was deprecated in API level 14. Obsolete.
TestTargetClass	This @interface was deprecated in API level 14. Obsolete.
UiThreadTest	This @interface was deprecated in API level 24. Use UiThreadTest instead. New tests should be written using the Android Testing Support Library.
ViewDebug.CapturedViewProperty	This annotation can be used to mark fields and methods to be dumped when the view is captured.
ViewDebug.ExportedProperty	This annotation can be used to mark fields and methods to be dumped by the view server.
ViewDebug.FlagToString	Defines a mapping from a flag to a String.
ViewDebug.IntToString	Defines a mapping from an int value to a String.
ViewPager.DecorView	Annotation which allows marking of views to be decoration views when added to a view pager.
VisibleForTesting	Denotes that the class, method or field has its visibility relaxed, so that it is more widely visible than otherwise necessary to make code testable.

The common interface extended by all annotation types. Note that an interface that manually extends this one does not define an annotation type. Also note that this interface does not itself define an annotation type. More information about annotation types can be found in section 9.6 of The Java™ Language Specification.

Summary

Public methods
`abstract Class<? extends Annotation>`	`annotationType()` Returns the annotation type of this annotation.
`abstract boolean`	`equals(Object obj)` Returns true if the specified object represents an annotation that is logically equivalent to this one.
`abstract int`	`hashCode()` Returns the hash code of this annotation, as defined below: The hash code of an annotation is the sum of the hash codes of its members (including those with default values), as defined below: The hash code of an annotation member is (127 times the hash code of the member-name as computed by `hashCode()`) XOR the hash code of the member-value, as defined below: The hash code of a member-value depends on its type: The hash code of a primitive value `v` is equal to `WrapperType.valueOf(v).hashCode()`, where `WrapperType` is the wrapper type corresponding to the primitive type of `v` (`Byte`, `Character`, `Double`, `Float`, `Integer`, `Long`, `Short`, or `Boolean`).
`abstract String`	`toString()` Returns a string representation of this annotation.

Public methods

annotationType

Added in API level 1

Class<? extends Annotation> annotationType ()

Returns the annotation type of this annotation.

Returns
`Class<? extends Annotation>`

equals

Added in API level 1

boolean equals (Object obj)

Returns true if the specified object represents an annotation that is logically equivalent to this one. In other words, returns true if the specified object is an instance of the same annotation type as this instance, all of whose members are equal to the corresponding member of this annotation, as defined below:

Two corresponding primitive typed members whose values are x and y are considered equal if x == y, unless their type is float or double.
Two corresponding float members whose values are x and y are considered equal if Float.valueOf(x).equals(Float.valueOf(y)). (Unlike the == operator, NaN is considered equal to itself, and 0.0f unequal to -0.0f.)
Two corresponding double members whose values are x and y are considered equal if Double.valueOf(x).equals(Double.valueOf(y)). (Unlike the == operator, NaN is considered equal to itself, and 0.0 unequal to -0.0.)
Two corresponding String, Class, enum, or annotation typed members whose values are x and y are considered equal if x.equals(y). (Note that this definition is recursive for annotation typed members.)
Two corresponding array typed members x and y are considered equal if Arrays.equals(x, y), for the appropriate overloading of equals(boolean[], boolean[]).

Parameters
`obj`	`Object`: the reference object with which to compare.

Returns
`boolean`	true if the specified object represents an annotation that is logically equivalent to this one, otherwise false

hashCode

Added in API level 1

int hashCode ()

Returns the hash code of this annotation, as defined below:

The hash code of an annotation is the sum of the hash codes of its members (including those with default values), as defined below: The hash code of an annotation member is (127 times the hash code of the member-name as computed by hashCode()) XOR the hash code of the member-value, as defined below:

The hash code of a member-value depends on its type:

The hash code of a primitive value v is equal to WrapperType.valueOf(v).hashCode(), where WrapperType is the wrapper type corresponding to the primitive type of v (Byte, Character, Double, Float, Integer, Long, Short, or Boolean).
The hash code of a string, enum, class, or annotation member-value I v is computed as by calling v.hashCode(). (In the case of annotation member values, this is a recursive definition.)
The hash code of an array member-value is computed by calling the appropriate overloading of Arrays.hashCode on the value. (There is one overloading for each primitive type, and one for object reference types.)

Returns
`int`	the hash code of this annotation

toString

Added in API level 1

String toString ()

Returns a string representation of this annotation. The details of the representation are implementation-dependent, but the following may be regarded as typical:

   @com.acme.util.Name(first=Alfred, middle=E., last=Neuman)

Returns
`String`	a string representation of this annotation

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Annotation

Summary

Public methods

Public methods

annotationType

equals

hashCode

toString